/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 09:25:09,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 09:25:09,848 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 09:25:09,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 09:25:09,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 09:25:09,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 09:25:09,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 09:25:09,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 09:25:09,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 09:25:09,879 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 09:25:09,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 09:25:09,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 09:25:09,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 09:25:09,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 09:25:09,881 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 09:25:09,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 09:25:09,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 09:25:09,882 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 09:25:09,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 09:25:09,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 09:25:09,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 09:25:09,883 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 09:25:09,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 09:25:09,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 09:25:09,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 09:25:09,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 09:25:09,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:25:09,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 09:25:09,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 09:25:09,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 09:25:09,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 09:25:09,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 09:25:10,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 09:25:10,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 09:25:10,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 09:25:10,096 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 09:25:10,097 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 09:25:10,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2023-12-19 09:25:11,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 09:25:11,522 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 09:25:11,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2023-12-19 09:25:11,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01363a112/dd1446e6e4bd4148bc35898f0944acea/FLAG6372cd496 [2023-12-19 09:25:11,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01363a112/dd1446e6e4bd4148bc35898f0944acea [2023-12-19 09:25:11,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 09:25:11,566 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 09:25:11,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 09:25:11,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 09:25:11,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 09:25:11,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd0c6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11, skipping insertion in model container [2023-12-19 09:25:11,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 09:25:11,715 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i[919,932] [2023-12-19 09:25:11,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:25:11,782 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 09:25:11,790 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i[919,932] [2023-12-19 09:25:11,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:25:11,882 INFO L206 MainTranslator]: Completed translation [2023-12-19 09:25:11,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11 WrapperNode [2023-12-19 09:25:11,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 09:25:11,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 09:25:11,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 09:25:11,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 09:25:11,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,935 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2023-12-19 09:25:11,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 09:25:11,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 09:25:11,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 09:25:11,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 09:25:11,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,973 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]. [2023-12-19 09:25:11,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:11,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 09:25:11,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 09:25:11,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 09:25:11,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 09:25:11,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (1/1) ... [2023-12-19 09:25:12,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:25:12,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:12,031 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) [2023-12-19 09:25:12,038 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 [2023-12-19 09:25:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 09:25:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 09:25:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 09:25:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 09:25:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 09:25:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 09:25:12,141 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 09:25:12,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 09:25:12,575 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 09:25:12,599 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 09:25:12,599 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 09:25:12,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:25:12 BoogieIcfgContainer [2023-12-19 09:25:12,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 09:25:12,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 09:25:12,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 09:25:12,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 09:25:12,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:25:11" (1/3) ... [2023-12-19 09:25:12,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bae46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:25:12, skipping insertion in model container [2023-12-19 09:25:12,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:25:11" (2/3) ... [2023-12-19 09:25:12,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bae46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:25:12, skipping insertion in model container [2023-12-19 09:25:12,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:25:12" (3/3) ... [2023-12-19 09:25:12,606 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2023-12-19 09:25:12,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 09:25:12,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 09:25:12,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 09:25:12,651 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;@2f52a6a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 09:25:12,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 09:25:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 09:25:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 09:25:12,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:12,675 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:12,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:12,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -910426074, now seen corresponding path program 1 times [2023-12-19 09:25:12,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:12,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58341435] [2023-12-19 09:25:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:12,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:25:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58341435] [2023-12-19 09:25:13,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 09:25:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765973978] [2023-12-19 09:25:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:13,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:13,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:13,009 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) [2023-12-19 09:25:13,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 09:25:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:13,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 09:25:13,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-19 09:25:13,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:25:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765973978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:25:13,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:25:13,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 09:25:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433085516] [2023-12-19 09:25:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:25:13,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 09:25:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:25:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 09:25:13,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 09:25:13,240 INFO L87 Difference]: Start difference. First operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 09:25:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:25:13,297 INFO L93 Difference]: Finished difference Result 183 states and 331 transitions. [2023-12-19 09:25:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 09:25:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2023-12-19 09:25:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:25:13,305 INFO L225 Difference]: With dead ends: 183 [2023-12-19 09:25:13,305 INFO L226 Difference]: Without dead ends: 91 [2023-12-19 09:25:13,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 09:25:13,310 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:25:13,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:25:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-19 09:25:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-19 09:25:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 09:25:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 148 transitions. [2023-12-19 09:25:13,350 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 148 transitions. Word has length 175 [2023-12-19 09:25:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:25:13,350 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 148 transitions. [2023-12-19 09:25:13,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 09:25:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 148 transitions. [2023-12-19 09:25:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 09:25:13,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:13,354 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:13,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 09:25:13,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 09:25:13,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:13,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash -61617952, now seen corresponding path program 1 times [2023-12-19 09:25:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:13,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766548055] [2023-12-19 09:25:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:13,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:25:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699496300] [2023-12-19 09:25:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:13,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:13,609 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) [2023-12-19 09:25:13,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 09:25:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:13,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 09:25:13,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:25:13,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:25:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:25:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766548055] [2023-12-19 09:25:13,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:25:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699496300] [2023-12-19 09:25:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699496300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:25:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:25:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 09:25:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101950480] [2023-12-19 09:25:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:25:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 09:25:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:25:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 09:25:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:25:13,915 INFO L87 Difference]: Start difference. First operand 91 states and 148 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:25:14,195 INFO L93 Difference]: Finished difference Result 270 states and 438 transitions. [2023-12-19 09:25:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 09:25:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 09:25:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:25:14,198 INFO L225 Difference]: With dead ends: 270 [2023-12-19 09:25:14,198 INFO L226 Difference]: Without dead ends: 180 [2023-12-19 09:25:14,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 09:25:14,199 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 156 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 09:25:14,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 511 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 09:25:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-19 09:25:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 93. [2023-12-19 09:25:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.5) internal successors, (96), 64 states have internal predecessors, (96), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 09:25:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 150 transitions. [2023-12-19 09:25:14,213 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 150 transitions. Word has length 175 [2023-12-19 09:25:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:25:14,214 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 150 transitions. [2023-12-19 09:25:14,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 150 transitions. [2023-12-19 09:25:14,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 09:25:14,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:14,216 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:14,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 09:25:14,422 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,SelfDestructingSolverStorable1 [2023-12-19 09:25:14,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:14,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:14,423 INFO L85 PathProgramCache]: Analyzing trace with hash 115217117, now seen corresponding path program 1 times [2023-12-19 09:25:14,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:14,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154057584] [2023-12-19 09:25:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:14,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:14,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:25:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787776194] [2023-12-19 09:25:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:14,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:14,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:14,522 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) [2023-12-19 09:25:14,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 09:25:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:14,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 09:25:14,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:25:15,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:25:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:25:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154057584] [2023-12-19 09:25:15,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:25:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787776194] [2023-12-19 09:25:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787776194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:25:15,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:25:15,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 09:25:15,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817585963] [2023-12-19 09:25:15,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:25:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 09:25:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:25:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 09:25:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:25:15,234 INFO L87 Difference]: Start difference. First operand 93 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:25:15,326 INFO L93 Difference]: Finished difference Result 316 states and 511 transitions. [2023-12-19 09:25:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 09:25:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 09:25:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:25:15,328 INFO L225 Difference]: With dead ends: 316 [2023-12-19 09:25:15,328 INFO L226 Difference]: Without dead ends: 224 [2023-12-19 09:25:15,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:25:15,330 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 252 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:25:15,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 424 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:25:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-19 09:25:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 193. [2023-12-19 09:25:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 136 states have (on average 1.5220588235294117) internal successors, (207), 136 states have internal predecessors, (207), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 09:25:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 315 transitions. [2023-12-19 09:25:15,419 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 315 transitions. Word has length 176 [2023-12-19 09:25:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:25:15,420 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 315 transitions. [2023-12-19 09:25:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 315 transitions. [2023-12-19 09:25:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:25:15,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:15,426 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:15,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 09:25:15,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:15,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:15,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2080638521, now seen corresponding path program 1 times [2023-12-19 09:25:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976944778] [2023-12-19 09:25:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:15,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:25:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942148788] [2023-12-19 09:25:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:15,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:15,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:15,703 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) [2023-12-19 09:25:15,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 09:25:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:15,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 09:25:15,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:25:16,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:25:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:25:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976944778] [2023-12-19 09:25:16,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:25:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942148788] [2023-12-19 09:25:16,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942148788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:25:16,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:25:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:25:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498893671] [2023-12-19 09:25:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:25:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:25:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:25:16,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:25:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:25:16,900 INFO L87 Difference]: Start difference. First operand 193 states and 315 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:25:18,244 INFO L93 Difference]: Finished difference Result 725 states and 1165 transitions. [2023-12-19 09:25:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:25:18,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:25:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:25:18,248 INFO L225 Difference]: With dead ends: 725 [2023-12-19 09:25:18,248 INFO L226 Difference]: Without dead ends: 533 [2023-12-19 09:25:18,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:25:18,250 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 383 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:25:18,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 834 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 09:25:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-19 09:25:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 460. [2023-12-19 09:25:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 335 states have (on average 1.51044776119403) internal successors, (506), 337 states have internal predecessors, (506), 118 states have call successors, (118), 6 states have call predecessors, (118), 6 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-19 09:25:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 742 transitions. [2023-12-19 09:25:18,356 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 742 transitions. Word has length 177 [2023-12-19 09:25:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:25:18,358 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 742 transitions. [2023-12-19 09:25:18,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 742 transitions. [2023-12-19 09:25:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:25:18,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:18,360 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:18,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 09:25:18,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:18,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:18,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2023380219, now seen corresponding path program 1 times [2023-12-19 09:25:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060396126] [2023-12-19 09:25:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:18,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:25:18,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922445065] [2023-12-19 09:25:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:18,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:18,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:18,620 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) [2023-12-19 09:25:18,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 09:25:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:18,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 09:25:18,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:25:19,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:25:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:25:19,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060396126] [2023-12-19 09:25:19,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:25:19,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922445065] [2023-12-19 09:25:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922445065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:25:19,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:25:19,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 09:25:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069623478] [2023-12-19 09:25:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:25:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:25:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:25:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:25:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:25:19,029 INFO L87 Difference]: Start difference. First operand 460 states and 742 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:19,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:25:19,128 INFO L93 Difference]: Finished difference Result 784 states and 1268 transitions. [2023-12-19 09:25:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 09:25:19,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:25:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:25:19,130 INFO L225 Difference]: With dead ends: 784 [2023-12-19 09:25:19,130 INFO L226 Difference]: Without dead ends: 332 [2023-12-19 09:25:19,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:25:19,132 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 91 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:25:19,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 418 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:25:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-19 09:25:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 270. [2023-12-19 09:25:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 185 states have (on average 1.508108108108108) internal successors, (279), 185 states have internal predecessors, (279), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-19 09:25:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 441 transitions. [2023-12-19 09:25:19,150 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 441 transitions. Word has length 177 [2023-12-19 09:25:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:25:19,150 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 441 transitions. [2023-12-19 09:25:19,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 441 transitions. [2023-12-19 09:25:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:25:19,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:19,152 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:19,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 09:25:19,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:19,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:19,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash -934465097, now seen corresponding path program 1 times [2023-12-19 09:25:19,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:19,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142694715] [2023-12-19 09:25:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:19,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:19,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:25:19,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413639328] [2023-12-19 09:25:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:19,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:19,377 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) [2023-12-19 09:25:19,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 09:25:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:19,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:25:19,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:25:22,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:25:22,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:25:22,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142694715] [2023-12-19 09:25:22,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:25:22,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413639328] [2023-12-19 09:25:22,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413639328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:25:22,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:25:22,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:25:22,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459158542] [2023-12-19 09:25:22,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:25:22,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:25:22,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:25:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:25:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:25:22,588 INFO L87 Difference]: Start difference. First operand 270 states and 441 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:25:26,557 INFO L93 Difference]: Finished difference Result 826 states and 1329 transitions. [2023-12-19 09:25:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:25:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:25:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:25:26,566 INFO L225 Difference]: With dead ends: 826 [2023-12-19 09:25:26,567 INFO L226 Difference]: Without dead ends: 634 [2023-12-19 09:25:26,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:25:26,578 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 461 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 09:25:26,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 665 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 09:25:26,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-19 09:25:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 545. [2023-12-19 09:25:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 397 states have (on average 1.5113350125944585) internal successors, (600), 398 states have internal predecessors, (600), 140 states have call successors, (140), 7 states have call predecessors, (140), 7 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 09:25:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 880 transitions. [2023-12-19 09:25:26,618 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 880 transitions. Word has length 177 [2023-12-19 09:25:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:25:26,618 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 880 transitions. [2023-12-19 09:25:26,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:25:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 880 transitions. [2023-12-19 09:25:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:25:26,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:25:26,620 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:25:26,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 09:25:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:26,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:25:26,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:25:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash -991723399, now seen corresponding path program 1 times [2023-12-19 09:25:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:25:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141229361] [2023-12-19 09:25:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:25:26,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:25:26,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133276510] [2023-12-19 09:25:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:25:26,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:25:26,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:25:26,870 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) [2023-12-19 09:25:26,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 09:25:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:25:27,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 09:25:27,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:25:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 591 proven. 171 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-12-19 09:25:33,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:26:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:26:00,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:26:00,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141229361] [2023-12-19 09:26:00,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:26:00,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133276510] [2023-12-19 09:26:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133276510] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:26:00,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:26:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-12-19 09:26:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557527615] [2023-12-19 09:26:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:26:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 09:26:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:26:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 09:26:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-12-19 09:26:00,646 INFO L87 Difference]: Start difference. First operand 545 states and 880 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:26:12,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:26:34,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 09:26:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:26:44,100 INFO L93 Difference]: Finished difference Result 1256 states and 1987 transitions. [2023-12-19 09:26:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 09:26:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:26:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:26:44,105 INFO L225 Difference]: With dead ends: 1256 [2023-12-19 09:26:44,106 INFO L226 Difference]: Without dead ends: 789 [2023-12-19 09:26:44,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=222, Invalid=1037, Unknown=1, NotChecked=0, Total=1260 [2023-12-19 09:26:44,108 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 292 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2023-12-19 09:26:44,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 748 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 422 Invalid, 2 Unknown, 0 Unchecked, 25.3s Time] [2023-12-19 09:26:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-12-19 09:26:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 568. [2023-12-19 09:26:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 423 states have (on average 1.4822695035460993) internal successors, (627), 423 states have internal predecessors, (627), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-19 09:26:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 897 transitions. [2023-12-19 09:26:44,180 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 897 transitions. Word has length 177 [2023-12-19 09:26:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:26:44,181 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 897 transitions. [2023-12-19 09:26:44,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:26:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 897 transitions. [2023-12-19 09:26:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:26:44,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:26:44,183 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:26:44,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 09:26:44,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:26:44,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:26:44,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:26:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1743811723, now seen corresponding path program 1 times [2023-12-19 09:26:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:26:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922088072] [2023-12-19 09:26:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:26:44,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:26:44,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:26:44,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115804732] [2023-12-19 09:26:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:26:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:26:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:26:44,422 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) [2023-12-19 09:26:44,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 09:26:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:26:44,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:26:44,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:26:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:26:49,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:26:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:26:49,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922088072] [2023-12-19 09:26:49,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:26:49,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115804732] [2023-12-19 09:26:49,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115804732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:26:49,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:26:49,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:26:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338665255] [2023-12-19 09:26:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:26:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:26:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:26:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:26:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:26:49,715 INFO L87 Difference]: Start difference. First operand 568 states and 897 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:26:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:26:56,824 INFO L93 Difference]: Finished difference Result 1185 states and 1853 transitions. [2023-12-19 09:26:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:26:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:26:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:26:56,827 INFO L225 Difference]: With dead ends: 1185 [2023-12-19 09:26:56,827 INFO L226 Difference]: Without dead ends: 703 [2023-12-19 09:26:56,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:26:56,829 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 439 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:26:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 661 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 09:26:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-12-19 09:26:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 572. [2023-12-19 09:26:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 427 states have (on average 1.4824355971896956) internal successors, (633), 427 states have internal predecessors, (633), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-19 09:26:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 903 transitions. [2023-12-19 09:26:56,883 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 903 transitions. Word has length 177 [2023-12-19 09:26:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:26:56,883 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 903 transitions. [2023-12-19 09:26:56,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:26:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 903 transitions. [2023-12-19 09:26:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:26:56,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:26:56,886 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:26:56,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 09:26:57,091 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,SelfDestructingSolverStorable7 [2023-12-19 09:26:57,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:26:57,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:26:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1801070025, now seen corresponding path program 1 times [2023-12-19 09:26:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:26:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453183092] [2023-12-19 09:26:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:26:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:26:57,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:26:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254809751] [2023-12-19 09:26:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:26:57,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:26:57,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:26:57,118 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) [2023-12-19 09:26:57,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 09:26:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:26:57,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 09:26:57,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:26:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-19 09:26:58,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:27:26,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:26,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453183092] [2023-12-19 09:27:26,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:26,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254809751] [2023-12-19 09:27:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254809751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 09:27:26,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:27:26,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-19 09:27:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902278638] [2023-12-19 09:27:26,995 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 09:27:26,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 09:27:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 09:27:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-19 09:27:26,996 INFO L87 Difference]: Start difference. First operand 572 states and 903 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 09:27:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:28,213 INFO L93 Difference]: Finished difference Result 1411 states and 2192 transitions. [2023-12-19 09:27:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 09:27:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-12-19 09:27:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:28,217 INFO L225 Difference]: With dead ends: 1411 [2023-12-19 09:27:28,217 INFO L226 Difference]: Without dead ends: 888 [2023-12-19 09:27:28,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2023-12-19 09:27:28,219 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 330 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:28,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 552 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 09:27:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-19 09:27:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 762. [2023-12-19 09:27:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 616 states have (on average 1.4756493506493507) internal successors, (909), 616 states have internal predecessors, (909), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-19 09:27:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1179 transitions. [2023-12-19 09:27:28,279 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1179 transitions. Word has length 177 [2023-12-19 09:27:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:28,279 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1179 transitions. [2023-12-19 09:27:28,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 09:27:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1179 transitions. [2023-12-19 09:27:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:27:28,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:28,280 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:28,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:28,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:28,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:28,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash 687130854, now seen corresponding path program 1 times [2023-12-19 09:27:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311035158] [2023-12-19 09:27:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:28,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414213898] [2023-12-19 09:27:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:28,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:28,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:28,512 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) [2023-12-19 09:27:28,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 09:27:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:28,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 09:27:28,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:27:29,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:29,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311035158] [2023-12-19 09:27:29,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414213898] [2023-12-19 09:27:29,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414213898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:29,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:29,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:27:29,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892775571] [2023-12-19 09:27:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:29,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:27:29,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:29,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:27:29,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:27:29,820 INFO L87 Difference]: Start difference. First operand 762 states and 1179 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:31,307 INFO L93 Difference]: Finished difference Result 1663 states and 2553 transitions. [2023-12-19 09:27:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 09:27:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:27:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:31,312 INFO L225 Difference]: With dead ends: 1663 [2023-12-19 09:27:31,312 INFO L226 Difference]: Without dead ends: 1385 [2023-12-19 09:27:31,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 09:27:31,314 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 572 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:31,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 868 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 09:27:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-12-19 09:27:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1079. [2023-12-19 09:27:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 875 states have (on average 1.473142857142857) internal successors, (1289), 875 states have internal predecessors, (1289), 189 states have call successors, (189), 14 states have call predecessors, (189), 14 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-12-19 09:27:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1667 transitions. [2023-12-19 09:27:31,416 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1667 transitions. Word has length 177 [2023-12-19 09:27:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:31,417 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1667 transitions. [2023-12-19 09:27:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1667 transitions. [2023-12-19 09:27:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:27:31,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:31,418 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:31,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:31,624 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,SelfDestructingSolverStorable9 [2023-12-19 09:27:31,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:31,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 629872552, now seen corresponding path program 1 times [2023-12-19 09:27:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:31,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234217707] [2023-12-19 09:27:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:31,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:31,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109911071] [2023-12-19 09:27:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:31,651 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) [2023-12-19 09:27:31,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 09:27:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:32,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 09:27:32,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-19 09:27:32,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:27:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:27:33,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:33,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234217707] [2023-12-19 09:27:33,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:33,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109911071] [2023-12-19 09:27:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109911071] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:27:33,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:27:33,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2023-12-19 09:27:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145077849] [2023-12-19 09:27:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:33,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 09:27:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 09:27:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-19 09:27:33,486 INFO L87 Difference]: Start difference. First operand 1079 states and 1667 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 09:27:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:36,304 INFO L93 Difference]: Finished difference Result 5502 states and 8624 transitions. [2023-12-19 09:27:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 09:27:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-12-19 09:27:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:36,320 INFO L225 Difference]: With dead ends: 5502 [2023-12-19 09:27:36,320 INFO L226 Difference]: Without dead ends: 4907 [2023-12-19 09:27:36,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 09:27:36,323 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 727 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:36,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1659 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 09:27:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2023-12-19 09:27:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 2695. [2023-12-19 09:27:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2143 states have (on average 1.4773681754549697) internal successors, (3166), 2143 states have internal predecessors, (3166), 513 states have call successors, (513), 38 states have call predecessors, (513), 38 states have return successors, (513), 513 states have call predecessors, (513), 513 states have call successors, (513) [2023-12-19 09:27:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 4192 transitions. [2023-12-19 09:27:36,644 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 4192 transitions. Word has length 177 [2023-12-19 09:27:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:36,645 INFO L495 AbstractCegarLoop]: Abstraction has 2695 states and 4192 transitions. [2023-12-19 09:27:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 09:27:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 4192 transitions. [2023-12-19 09:27:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 09:27:36,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:36,647 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:36,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:36,853 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,SelfDestructingSolverStorable10 [2023-12-19 09:27:36,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:36,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1293675063, now seen corresponding path program 1 times [2023-12-19 09:27:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321084134] [2023-12-19 09:27:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:36,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:36,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957765310] [2023-12-19 09:27:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:36,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:36,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:36,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 09:27:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:37,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:27:37,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:27:41,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:41,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321084134] [2023-12-19 09:27:41,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:41,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957765310] [2023-12-19 09:27:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957765310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:41,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:27:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013882388] [2023-12-19 09:27:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:27:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:27:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:27:41,509 INFO L87 Difference]: Start difference. First operand 2695 states and 4192 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:48,092 INFO L93 Difference]: Finished difference Result 4275 states and 6645 transitions. [2023-12-19 09:27:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:27:48,092 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 09:27:48,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:48,103 INFO L225 Difference]: With dead ends: 4275 [2023-12-19 09:27:48,103 INFO L226 Difference]: Without dead ends: 3104 [2023-12-19 09:27:48,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:27:48,106 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 428 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:48,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1073 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 09:27:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2023-12-19 09:27:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2967. [2023-12-19 09:27:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2328 states have (on average 1.4630584192439862) internal successors, (3406), 2328 states have internal predecessors, (3406), 594 states have call successors, (594), 44 states have call predecessors, (594), 44 states have return successors, (594), 594 states have call predecessors, (594), 594 states have call successors, (594) [2023-12-19 09:27:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4594 transitions. [2023-12-19 09:27:48,421 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4594 transitions. Word has length 177 [2023-12-19 09:27:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:48,421 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 4594 transitions. [2023-12-19 09:27:48,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4594 transitions. [2023-12-19 09:27:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 09:27:48,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:48,423 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:48,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:48,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 09:27:48,630 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:48,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2088242061, now seen corresponding path program 1 times [2023-12-19 09:27:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:48,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759916639] [2023-12-19 09:27:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:48,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282491705] [2023-12-19 09:27:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:48,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:48,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:48,693 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:48,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 09:27:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:49,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 09:27:49,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:27:50,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:50,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759916639] [2023-12-19 09:27:50,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:50,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282491705] [2023-12-19 09:27:50,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282491705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:50,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:50,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 09:27:50,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605861176] [2023-12-19 09:27:50,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:50,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 09:27:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 09:27:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 09:27:50,315 INFO L87 Difference]: Start difference. First operand 2967 states and 4594 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:51,389 INFO L93 Difference]: Finished difference Result 4312 states and 6664 transitions. [2023-12-19 09:27:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 09:27:51,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 09:27:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:51,404 INFO L225 Difference]: With dead ends: 4312 [2023-12-19 09:27:51,405 INFO L226 Difference]: Without dead ends: 3684 [2023-12-19 09:27:51,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:27:51,408 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 164 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:51,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 607 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 09:27:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2023-12-19 09:27:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3026. [2023-12-19 09:27:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2387 states have (on average 1.4713028906577295) internal successors, (3512), 2387 states have internal predecessors, (3512), 594 states have call successors, (594), 44 states have call predecessors, (594), 44 states have return successors, (594), 594 states have call predecessors, (594), 594 states have call successors, (594) [2023-12-19 09:27:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4700 transitions. [2023-12-19 09:27:51,872 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4700 transitions. Word has length 178 [2023-12-19 09:27:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:51,872 INFO L495 AbstractCegarLoop]: Abstraction has 3026 states and 4700 transitions. [2023-12-19 09:27:51,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4700 transitions. [2023-12-19 09:27:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 09:27:51,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:51,874 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:51,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 09:27:52,079 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:52,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1678115535, now seen corresponding path program 1 times [2023-12-19 09:27:52,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:52,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035329321] [2023-12-19 09:27:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:52,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106129680] [2023-12-19 09:27:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:52,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:52,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:52,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:52,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 09:27:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:52,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 09:27:52,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:27:53,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:53,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035329321] [2023-12-19 09:27:53,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106129680] [2023-12-19 09:27:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106129680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:27:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259210818] [2023-12-19 09:27:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:53,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:27:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:27:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:27:53,423 INFO L87 Difference]: Start difference. First operand 3026 states and 4700 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:55,428 INFO L93 Difference]: Finished difference Result 4591 states and 7112 transitions. [2023-12-19 09:27:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 09:27:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 09:27:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:55,442 INFO L225 Difference]: With dead ends: 4591 [2023-12-19 09:27:55,442 INFO L226 Difference]: Without dead ends: 4191 [2023-12-19 09:27:55,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 09:27:55,445 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 489 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:55,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1230 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 09:27:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2023-12-19 09:27:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3648. [2023-12-19 09:27:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 2835 states have (on average 1.4631393298059965) internal successors, (4148), 2835 states have internal predecessors, (4148), 756 states have call successors, (756), 56 states have call predecessors, (756), 56 states have return successors, (756), 756 states have call predecessors, (756), 756 states have call successors, (756) [2023-12-19 09:27:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 5660 transitions. [2023-12-19 09:27:56,112 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 5660 transitions. Word has length 178 [2023-12-19 09:27:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:56,113 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 5660 transitions. [2023-12-19 09:27:56,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 5660 transitions. [2023-12-19 09:27:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 09:27:56,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:56,115 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:56,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:56,322 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:56,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1735373837, now seen corresponding path program 1 times [2023-12-19 09:27:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54627589] [2023-12-19 09:27:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:56,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562048177] [2023-12-19 09:27:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:56,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:56,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:56,343 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:56,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 09:27:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:56,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:27:56,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:27:57,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:57,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54627589] [2023-12-19 09:27:57,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562048177] [2023-12-19 09:27:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562048177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 09:27:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716577468] [2023-12-19 09:27:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:57,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 09:27:57,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 09:27:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 09:27:57,367 INFO L87 Difference]: Start difference. First operand 3648 states and 5660 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:58,961 INFO L93 Difference]: Finished difference Result 5144 states and 7989 transitions. [2023-12-19 09:27:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 09:27:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 09:27:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:58,974 INFO L225 Difference]: With dead ends: 5144 [2023-12-19 09:27:58,974 INFO L226 Difference]: Without dead ends: 4430 [2023-12-19 09:27:58,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:27:58,977 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 219 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:58,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1228 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 09:27:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2023-12-19 09:27:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4172. [2023-12-19 09:27:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 3185 states have (on average 1.4470957613814757) internal successors, (4609), 3185 states have internal predecessors, (4609), 918 states have call successors, (918), 68 states have call predecessors, (918), 68 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2023-12-19 09:27:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 6445 transitions. [2023-12-19 09:27:59,443 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 6445 transitions. Word has length 178 [2023-12-19 09:27:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:59,443 INFO L495 AbstractCegarLoop]: Abstraction has 4172 states and 6445 transitions. [2023-12-19 09:27:59,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:27:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 6445 transitions. [2023-12-19 09:27:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 09:27:59,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:59,445 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:59,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 09:27:59,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 09:27:59,652 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:59,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1917847670, now seen corresponding path program 1 times [2023-12-19 09:27:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836301671] [2023-12-19 09:27:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:59,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549127706] [2023-12-19 09:27:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:59,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:59,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:59,673 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:59,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 09:28:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:00,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:28:00,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:28:01,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:28:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836301671] [2023-12-19 09:28:01,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549127706] [2023-12-19 09:28:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549127706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:28:01,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:28:01,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 09:28:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510065680] [2023-12-19 09:28:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:28:01,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 09:28:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 09:28:01,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-19 09:28:01,244 INFO L87 Difference]: Start difference. First operand 4172 states and 6445 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:28:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:03,591 INFO L93 Difference]: Finished difference Result 8376 states and 12801 transitions. [2023-12-19 09:28:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 09:28:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 09:28:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:03,606 INFO L225 Difference]: With dead ends: 8376 [2023-12-19 09:28:03,607 INFO L226 Difference]: Without dead ends: 4874 [2023-12-19 09:28:03,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-12-19 09:28:03,616 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 347 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 836 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 09:28:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2023-12-19 09:28:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4164. [2023-12-19 09:28:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 3177 states have (on average 1.4450739691532892) internal successors, (4591), 3177 states have internal predecessors, (4591), 918 states have call successors, (918), 68 states have call predecessors, (918), 68 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2023-12-19 09:28:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 6427 transitions. [2023-12-19 09:28:04,275 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 6427 transitions. Word has length 178 [2023-12-19 09:28:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:04,276 INFO L495 AbstractCegarLoop]: Abstraction has 4164 states and 6427 transitions. [2023-12-19 09:28:04,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:28:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 6427 transitions. [2023-12-19 09:28:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 09:28:04,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:04,278 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:04,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:04,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 09:28:04,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:04,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash 367550792, now seen corresponding path program 1 times [2023-12-19 09:28:04,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752183270] [2023-12-19 09:28:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:04,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:04,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274358297] [2023-12-19 09:28:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:04,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:04,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:04,516 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:04,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 09:28:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:04,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:28:04,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:28:09,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:28:09,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:09,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752183270] [2023-12-19 09:28:09,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:09,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274358297] [2023-12-19 09:28:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274358297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:28:09,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:28:09,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 09:28:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269241732] [2023-12-19 09:28:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:28:09,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 09:28:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 09:28:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 09:28:09,805 INFO L87 Difference]: Start difference. First operand 4164 states and 6427 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:28:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:20,046 INFO L93 Difference]: Finished difference Result 6672 states and 10328 transitions. [2023-12-19 09:28:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 09:28:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 09:28:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:20,055 INFO L225 Difference]: With dead ends: 6672 [2023-12-19 09:28:20,056 INFO L226 Difference]: Without dead ends: 4283 [2023-12-19 09:28:20,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 09:28:20,061 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 394 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:20,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1145 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-19 09:28:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2023-12-19 09:28:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4169. [2023-12-19 09:28:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 3182 states have (on average 1.444688874921433) internal successors, (4597), 3182 states have internal predecessors, (4597), 918 states have call successors, (918), 68 states have call predecessors, (918), 68 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2023-12-19 09:28:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 6433 transitions. [2023-12-19 09:28:20,501 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 6433 transitions. Word has length 178 [2023-12-19 09:28:20,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:20,501 INFO L495 AbstractCegarLoop]: Abstraction has 4169 states and 6433 transitions. [2023-12-19 09:28:20,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:28:20,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 6433 transitions. [2023-12-19 09:28:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 09:28:20,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:20,503 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:20,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:20,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 09:28:20,710 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:20,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash -805580756, now seen corresponding path program 1 times [2023-12-19 09:28:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:20,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130579492] [2023-12-19 09:28:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:20,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278948241] [2023-12-19 09:28:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:20,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:20,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:20,738 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:20,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 09:28:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:20,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 09:28:20,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 656 proven. 51 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2023-12-19 09:28:21,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:28:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-19 09:28:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130579492] [2023-12-19 09:28:21,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278948241] [2023-12-19 09:28:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278948241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:28:21,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:28:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 09:28:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084660100] [2023-12-19 09:28:21,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:28:21,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 09:28:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:21,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 09:28:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 09:28:21,406 INFO L87 Difference]: Start difference. First operand 4169 states and 6433 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 09:28:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:24,219 INFO L93 Difference]: Finished difference Result 9704 states and 14583 transitions. [2023-12-19 09:28:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-19 09:28:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 179 [2023-12-19 09:28:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:24,235 INFO L225 Difference]: With dead ends: 9704 [2023-12-19 09:28:24,235 INFO L226 Difference]: Without dead ends: 7029 [2023-12-19 09:28:24,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 09:28:24,242 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1824 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:24,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 1980 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 09:28:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7029 states. [2023-12-19 09:28:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7029 to 5198. [2023-12-19 09:28:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 3923 states have (on average 1.4063216925822075) internal successors, (5517), 3938 states have internal predecessors, (5517), 1134 states have call successors, (1134), 140 states have call predecessors, (1134), 140 states have return successors, (1134), 1119 states have call predecessors, (1134), 1134 states have call successors, (1134) [2023-12-19 09:28:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 7785 transitions. [2023-12-19 09:28:24,929 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 7785 transitions. Word has length 179 [2023-12-19 09:28:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:24,929 INFO L495 AbstractCegarLoop]: Abstraction has 5198 states and 7785 transitions. [2023-12-19 09:28:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 09:28:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 7785 transitions. [2023-12-19 09:28:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-19 09:28:24,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:24,932 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:24,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 09:28:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 09:28:25,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:25,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash -293851526, now seen corresponding path program 1 times [2023-12-19 09:28:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:25,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93169963] [2023-12-19 09:28:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:25,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850855630] [2023-12-19 09:28:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:25,159 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:25,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 09:28:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:25,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 09:28:25,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:30:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 09:30:10,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:30:10,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:30:10,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93169963] [2023-12-19 09:30:10,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:30:10,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850855630] [2023-12-19 09:30:10,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850855630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:30:10,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:30:10,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 09:30:10,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135723210] [2023-12-19 09:30:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:30:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 09:30:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:30:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 09:30:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:30:10,408 INFO L87 Difference]: Start difference. First operand 5198 states and 7785 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:30:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:30:11,892 INFO L93 Difference]: Finished difference Result 10684 states and 15921 transitions. [2023-12-19 09:30:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 09:30:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2023-12-19 09:30:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:30:11,908 INFO L225 Difference]: With dead ends: 10684 [2023-12-19 09:30:11,909 INFO L226 Difference]: Without dead ends: 5894 [2023-12-19 09:30:11,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-12-19 09:30:11,919 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 396 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 09:30:11,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 969 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 09:30:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2023-12-19 09:30:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5264. [2023-12-19 09:30:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 3989 states have (on average 1.4061168212584607) internal successors, (5609), 4004 states have internal predecessors, (5609), 1134 states have call successors, (1134), 140 states have call predecessors, (1134), 140 states have return successors, (1134), 1119 states have call predecessors, (1134), 1134 states have call successors, (1134) [2023-12-19 09:30:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 7877 transitions. [2023-12-19 09:30:12,608 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 7877 transitions. Word has length 180 [2023-12-19 09:30:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:30:12,608 INFO L495 AbstractCegarLoop]: Abstraction has 5264 states and 7877 transitions. [2023-12-19 09:30:12,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 09:30:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 7877 transitions. [2023-12-19 09:30:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-19 09:30:12,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:30:12,611 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:30:12,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 09:30:12,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:30:12,817 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:30:12,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:30:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash -355891140, now seen corresponding path program 1 times [2023-12-19 09:30:12,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:30:12,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030080261] [2023-12-19 09:30:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:30:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:30:12,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:30:12,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009652891] [2023-12-19 09:30:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:30:12,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:30:12,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:30:12,857 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:30:12,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 09:30:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:30:13,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 09:30:13,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:31:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 708 proven. 45 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-12-19 09:31:26,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 09:39:35,214 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:39:35,215 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:39:35,219 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 09:39:35,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-19 09:39:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:39:35,426 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 181 with TraceHistMax 27,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-37-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-1 context. [2023-12-19 09:39:35,431 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:39:35,433 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 09:39:35,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:39:35 BoogieIcfgContainer [2023-12-19 09:39:35,435 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 09:39:35,435 INFO L158 Benchmark]: Toolchain (without parser) took 863868.61ms. Allocated memory was 280.0MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 227.1MB in the beginning and 1.1GB in the end (delta: -842.6MB). Peak memory consumption was 903.4MB. Max. memory is 8.0GB. [2023-12-19 09:39:35,435 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 09:39:35,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.91ms. Allocated memory is still 280.0MB. Free memory was 227.1MB in the beginning and 211.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 09:39:35,438 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.84ms. Allocated memory is still 280.0MB. Free memory was 211.4MB in the beginning and 206.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 09:39:35,438 INFO L158 Benchmark]: Boogie Preprocessor took 48.35ms. Allocated memory is still 280.0MB. Free memory was 206.8MB in the beginning and 201.3MB in the end (delta: 5.4MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 09:39:35,438 INFO L158 Benchmark]: RCFGBuilder took 607.47ms. Allocated memory is still 280.0MB. Free memory was 201.3MB in the beginning and 170.1MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-19 09:39:35,442 INFO L158 Benchmark]: TraceAbstraction took 862833.39ms. Allocated memory was 280.0MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 169.0MB in the beginning and 1.1GB in the end (delta: -900.7MB). Peak memory consumption was 845.8MB. Max. memory is 8.0GB. [2023-12-19 09:39:35,445 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 315.91ms. Allocated memory is still 280.0MB. Free memory was 227.1MB in the beginning and 211.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.84ms. Allocated memory is still 280.0MB. Free memory was 211.4MB in the beginning and 206.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.35ms. Allocated memory is still 280.0MB. Free memory was 206.8MB in the beginning and 201.3MB in the end (delta: 5.4MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 607.47ms. Allocated memory is still 280.0MB. Free memory was 201.3MB in the beginning and 170.1MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 862833.39ms. Allocated memory was 280.0MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 169.0MB in the beginning and 1.1GB in the end (delta: -900.7MB). Peak memory consumption was 845.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 181 with TraceHistMax 27,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-37-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.8s, OverallIterations: 20, TraceHistogramMax: 27, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 90.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 7983 SdHoareTripleChecker+Valid, 51.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7964 mSDsluCounter, 16553 SdHoareTripleChecker+Invalid, 49.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13073 mSDsCounter, 1626 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11847 IncrementalHoareTripleChecker+Invalid, 13475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1626 mSolverCounterUnsat, 3480 mSDtfsCounter, 11847 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4150 GetRequests, 3737 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 60.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5264occurred in iteration=19, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 8219 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 194.5s InterpolantComputationTime, 3543 NumberOfCodeBlocks, 3543 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3879 ConstructedInterpolants, 15 QuantifiedInterpolants, 38793 SizeOfPredicates, 244 NumberOfNonLiveVariables, 8288 ConjunctsInSsa, 343 ConjunctsInUnsatCore, 22 InterpolantComputations, 17 PerfectInterpolantSequences, 30471/30888 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown