/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-pe-co_file-54.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:42:01,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:42:01,096 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 08:42:01,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:42:01,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:42:01,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:42:01,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:42:01,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:42:01,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:42:01,128 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:42:01,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:42:01,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:42:01,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:42:01,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:42:01,131 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:42:01,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:42:01,131 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:42:01,131 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:42:01,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:42:01,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:42:01,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:42:01,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:42:01,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:42:01,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:42:01,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:42:01,133 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:42:01,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:42:01,133 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:42:01,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:42:01,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:42:01,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:42:01,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:42:01,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:42:01,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:42:01,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:42:01,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:42:01,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:42:01,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:42:01,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:42:01,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:42:01,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:42:01,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:42:01,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:42:01,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:42:01,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:42:01,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:42:01,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:42:01,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:42:01,373 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:42:01,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-54.i [2023-12-19 08:42:02,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:42:02,788 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:42:02,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-54.i [2023-12-19 08:42:02,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88051c593/465ff35cdc7046acbe50f8723470ea2d/FLAG1d9ff62e9 [2023-12-19 08:42:02,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88051c593/465ff35cdc7046acbe50f8723470ea2d [2023-12-19 08:42:02,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:42:02,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:42:02,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:42:02,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:42:02,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:42:02,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:42:02" (1/1) ... [2023-12-19 08:42:02,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb36c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:02, skipping insertion in model container [2023-12-19 08:42:02,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:42:02" (1/1) ... [2023-12-19 08:42:02,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:42:02,966 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-pe-co_file-54.i[919,932] [2023-12-19 08:42:03,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:42:03,037 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:42:03,045 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-pe-co_file-54.i[919,932] [2023-12-19 08:42:03,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:42:03,110 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:42:03,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03 WrapperNode [2023-12-19 08:42:03,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:42:03,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:42:03,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:42:03,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:42:03,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,148 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2023-12-19 08:42:03,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:42:03,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:42:03,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:42:03,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:42:03,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,183 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 08:42:03,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:42:03,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:42:03,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:42:03,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:42:03,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (1/1) ... [2023-12-19 08:42:03,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:42:03,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:03,248 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 08:42:03,283 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 08:42:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:42:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:42:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:42:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:42:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:42:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:42:03,387 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:42:03,388 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:42:03,731 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:42:03,777 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:42:03,777 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:42:03,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:42:03 BoogieIcfgContainer [2023-12-19 08:42:03,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:42:03,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:42:03,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:42:03,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:42:03,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:42:02" (1/3) ... [2023-12-19 08:42:03,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7eea21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:42:03, skipping insertion in model container [2023-12-19 08:42:03,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:42:03" (2/3) ... [2023-12-19 08:42:03,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7eea21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:42:03, skipping insertion in model container [2023-12-19 08:42:03,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:42:03" (3/3) ... [2023-12-19 08:42:03,791 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-54.i [2023-12-19 08:42:03,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:42:03,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:42:03,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:42:03,852 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;@5c18db9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:42:03,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:42:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-19 08:42:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-19 08:42:03,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:03,893 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:03,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:03,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1832984581, now seen corresponding path program 1 times [2023-12-19 08:42:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:03,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282950272] [2023-12-19 08:42:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:03,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:04,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282950272] [2023-12-19 08:42:04,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:42:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98929233] [2023-12-19 08:42:04,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:04,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:04,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:04,177 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 08:42:04,185 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 08:42:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:04,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:42:04,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-12-19 08:42:04,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:04,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98929233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:42:04,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120846293] [2023-12-19 08:42:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:04,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:42:04,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:42:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:42:04,414 INFO L87 Difference]: Start difference. First operand has 96 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-19 08:42:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:04,445 INFO L93 Difference]: Finished difference Result 188 states and 339 transitions. [2023-12-19 08:42:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:42:04,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 222 [2023-12-19 08:42:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:04,465 INFO L225 Difference]: With dead ends: 188 [2023-12-19 08:42:04,465 INFO L226 Difference]: Without dead ends: 93 [2023-12-19 08:42:04,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 221 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 08:42:04,470 INFO L413 NwaCegarLoop]: 142 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, 142 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 08:42:04,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:42:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-19 08:42:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-19 08:42:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-19 08:42:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 145 transitions. [2023-12-19 08:42:04,510 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 145 transitions. Word has length 222 [2023-12-19 08:42:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 145 transitions. [2023-12-19 08:42:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-19 08:42:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 145 transitions. [2023-12-19 08:42:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-19 08:42:04,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:04,518 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:04,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 08:42:04,720 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 08:42:04,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:04,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1656022641, now seen corresponding path program 1 times [2023-12-19 08:42:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593437755] [2023-12-19 08:42:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:04,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:04,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:04,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572964772] [2023-12-19 08:42:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:04,796 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 08:42:04,829 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 08:42:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:04,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 08:42:04,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-19 08:42:05,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:05,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593437755] [2023-12-19 08:42:05,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:05,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572964772] [2023-12-19 08:42:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572964772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:05,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:05,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:42:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441602840] [2023-12-19 08:42:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:42:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:05,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:42:05,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:42:05,041 INFO L87 Difference]: Start difference. First operand 93 states and 145 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-19 08:42:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:05,097 INFO L93 Difference]: Finished difference Result 275 states and 429 transitions. [2023-12-19 08:42:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:42:05,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 222 [2023-12-19 08:42:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:05,100 INFO L225 Difference]: With dead ends: 275 [2023-12-19 08:42:05,100 INFO L226 Difference]: Without dead ends: 183 [2023-12-19 08:42:05,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:42:05,102 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 135 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:05,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 385 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:42:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-19 08:42:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-12-19 08:42:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 108 states have internal predecessors, (141), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-19 08:42:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 281 transitions. [2023-12-19 08:42:05,122 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 281 transitions. Word has length 222 [2023-12-19 08:42:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:05,123 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 281 transitions. [2023-12-19 08:42:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-19 08:42:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 281 transitions. [2023-12-19 08:42:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-19 08:42:05,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:05,126 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:05,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 08:42:05,331 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 08:42:05,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:05,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 846676015, now seen corresponding path program 1 times [2023-12-19 08:42:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936046235] [2023-12-19 08:42:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:05,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848635897] [2023-12-19 08:42:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:05,378 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 08:42:05,403 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 08:42:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:05,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:42:05,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-19 08:42:05,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:05,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936046235] [2023-12-19 08:42:05,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848635897] [2023-12-19 08:42:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848635897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:05,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:42:05,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668229784] [2023-12-19 08:42:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:42:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:42:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:42:05,778 INFO L87 Difference]: Start difference. First operand 181 states and 281 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-19 08:42:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:05,928 INFO L93 Difference]: Finished difference Result 464 states and 720 transitions. [2023-12-19 08:42:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:42:05,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 222 [2023-12-19 08:42:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:05,932 INFO L225 Difference]: With dead ends: 464 [2023-12-19 08:42:05,932 INFO L226 Difference]: Without dead ends: 284 [2023-12-19 08:42:05,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 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 08:42:05,935 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 83 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:05,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 421 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:42:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-19 08:42:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 246. [2023-12-19 08:42:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 137 states have (on average 1.2408759124087592) internal successors, (170), 137 states have internal predecessors, (170), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-19 08:42:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 380 transitions. [2023-12-19 08:42:05,996 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 380 transitions. Word has length 222 [2023-12-19 08:42:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:05,996 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 380 transitions. [2023-12-19 08:42:05,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-19 08:42:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 380 transitions. [2023-12-19 08:42:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 08:42:05,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:05,998 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:06,009 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 08:42:06,209 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 08:42:06,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:06,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1380843332, now seen corresponding path program 1 times [2023-12-19 08:42:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:06,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796653067] [2023-12-19 08:42:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:06,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945363334] [2023-12-19 08:42:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:06,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:06,282 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 08:42:06,300 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 08:42:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:07,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 08:42:07,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1200 proven. 372 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2023-12-19 08:42:09,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:42:12,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796653067] [2023-12-19 08:42:12,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945363334] [2023-12-19 08:42:12,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945363334] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 08:42:12,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:42:12,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-12-19 08:42:12,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242958040] [2023-12-19 08:42:12,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 08:42:12,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 08:42:12,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:12,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 08:42:12,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2023-12-19 08:42:12,105 INFO L87 Difference]: Start difference. First operand 246 states and 380 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 08:42:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:14,780 INFO L93 Difference]: Finished difference Result 786 states and 1147 transitions. [2023-12-19 08:42:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 08:42:14,781 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) Word has length 223 [2023-12-19 08:42:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:14,786 INFO L225 Difference]: With dead ends: 786 [2023-12-19 08:42:14,786 INFO L226 Difference]: Without dead ends: 606 [2023-12-19 08:42:14,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=897, Invalid=2885, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 08:42:14,792 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 378 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:14,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1091 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 08:42:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-19 08:42:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 422. [2023-12-19 08:42:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 257 states have (on average 1.2217898832684826) internal successors, (314), 257 states have internal predecessors, (314), 140 states have call successors, (140), 24 states have call predecessors, (140), 24 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:42:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 594 transitions. [2023-12-19 08:42:14,856 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 594 transitions. Word has length 223 [2023-12-19 08:42:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:14,857 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 594 transitions. [2023-12-19 08:42:14,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 08:42:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 594 transitions. [2023-12-19 08:42:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 08:42:14,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:14,860 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:14,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 08:42:15,067 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 08:42:15,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:15,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1225180222, now seen corresponding path program 1 times [2023-12-19 08:42:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:15,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176232472] [2023-12-19 08:42:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:15,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:15,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:15,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213500972] [2023-12-19 08:42:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:15,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:15,104 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 08:42:15,127 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 08:42:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:15,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 08:42:15,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-19 08:42:15,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:15,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:15,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176232472] [2023-12-19 08:42:15,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213500972] [2023-12-19 08:42:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213500972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:15,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:15,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:42:15,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118281859] [2023-12-19 08:42:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:15,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:42:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:42:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:42:15,595 INFO L87 Difference]: Start difference. First operand 422 states and 594 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-19 08:42:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:15,656 INFO L93 Difference]: Finished difference Result 872 states and 1236 transitions. [2023-12-19 08:42:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:42:15,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2023-12-19 08:42:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:15,660 INFO L225 Difference]: With dead ends: 872 [2023-12-19 08:42:15,660 INFO L226 Difference]: Without dead ends: 536 [2023-12-19 08:42:15,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:42:15,661 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 31 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:15,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 293 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:42:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-12-19 08:42:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 422. [2023-12-19 08:42:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 257 states have (on average 1.2217898832684826) internal successors, (314), 257 states have internal predecessors, (314), 140 states have call successors, (140), 24 states have call predecessors, (140), 24 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:42:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 594 transitions. [2023-12-19 08:42:15,695 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 594 transitions. Word has length 223 [2023-12-19 08:42:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:15,695 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 594 transitions. [2023-12-19 08:42:15,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-19 08:42:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 594 transitions. [2023-12-19 08:42:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 08:42:15,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:15,697 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:15,720 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 08:42:15,904 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 08:42:15,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:15,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash -958141506, now seen corresponding path program 1 times [2023-12-19 08:42:15,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:15,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196958420] [2023-12-19 08:42:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:15,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:15,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604158432] [2023-12-19 08:42:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:15,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:15,962 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 08:42:16,012 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 08:42:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:16,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 08:42:16,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:44:21,362 WARN L293 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 72 DAG size of output: 69 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-19 08:48:08,342 WARN L293 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 311 DAG size of output: 283 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:50:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1021 proven. 594 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2023-12-19 08:50:28,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:51:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:51:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196958420] [2023-12-19 08:51:15,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:51:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604158432] [2023-12-19 08:51:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604158432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 08:51:15,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:51:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2023-12-19 08:51:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048079202] [2023-12-19 08:51:15,989 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 08:51:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 08:51:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:51:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 08:51:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1650, Unknown=10, NotChecked=0, Total=2162 [2023-12-19 08:51:15,991 INFO L87 Difference]: Start difference. First operand 422 states and 594 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 28 states have internal predecessors, (78), 9 states have call successors, (35), 9 states have call predecessors, (35), 10 states have return successors, (35), 8 states have call predecessors, (35), 9 states have call successors, (35) [2023-12-19 08:51:28,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:51:31,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:51:36,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:51:41,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:51:47,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:51:55,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:52:00,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:54:53,708 WARN L293 SmtUtils]: Spent 2.73m on a formula simplification. DAG size of input: 382 DAG size of output: 347 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:54:57,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:01,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:05,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:09,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:12,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:16,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:21,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:25,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:27,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:33,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:37,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:43,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:47,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:49,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:54,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:55:59,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:56:00,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:56:04,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:56:07,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:56:11,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 08:56:12,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-19 08:56:41,936 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:56:41,937 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 08:56:42,946 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 08:56:43,144 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 08:56:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 08:56:43,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 294.4s TimeCoverageRelationStatistics Valid=945, Invalid=2825, Unknown=12, NotChecked=0, Total=3782 [2023-12-19 08:56:43,236 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 561 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 11 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:56:43,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 814 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1180 Invalid, 20 Unknown, 0 Unchecked, 118.4s Time] [2023-12-19 08:56:43,238 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 08:56:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 08:56:43,238 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (422states) and FLOYD_HOARE automaton (currently 36 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-19 08:56:43,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 08:56:43,242 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-19 08:56:43,244 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 08:56:43,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:56:43 BoogieIcfgContainer [2023-12-19 08:56:43,245 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 08:56:43,246 INFO L158 Benchmark]: Toolchain (without parser) took 880428.69ms. Allocated memory was 315.6MB in the beginning and 468.7MB in the end (delta: 153.1MB). Free memory was 261.5MB in the beginning and 414.8MB in the end (delta: -153.3MB). Peak memory consumption was 267.6MB. Max. memory is 8.0GB. [2023-12-19 08:56:43,246 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory was 132.8MB in the beginning and 132.6MB in the end (delta: 150.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 08:56:43,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.98ms. Allocated memory is still 315.6MB. Free memory was 261.4MB in the beginning and 245.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 08:56:43,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.21ms. Allocated memory is still 315.6MB. Free memory was 245.1MB in the beginning and 242.1MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 08:56:43,247 INFO L158 Benchmark]: Boogie Preprocessor took 50.84ms. Allocated memory is still 315.6MB. Free memory was 242.1MB in the beginning and 238.3MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 08:56:43,247 INFO L158 Benchmark]: RCFGBuilder took 576.52ms. Allocated memory is still 315.6MB. Free memory was 237.9MB in the beginning and 211.7MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-19 08:56:43,247 INFO L158 Benchmark]: TraceAbstraction took 879466.59ms. Allocated memory was 315.6MB in the beginning and 468.7MB in the end (delta: 153.1MB). Free memory was 211.1MB in the beginning and 414.8MB in the end (delta: -203.7MB). Peak memory consumption was 217.3MB. Max. memory is 8.0GB. [2023-12-19 08:56:43,248 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 181.4MB. Free memory was 132.8MB in the beginning and 132.6MB in the end (delta: 150.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.98ms. Allocated memory is still 315.6MB. Free memory was 261.4MB in the beginning and 245.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.21ms. Allocated memory is still 315.6MB. Free memory was 245.1MB in the beginning and 242.1MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.84ms. Allocated memory is still 315.6MB. Free memory was 242.1MB in the beginning and 238.3MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 576.52ms. Allocated memory is still 315.6MB. Free memory was 237.9MB in the beginning and 211.7MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 879466.59ms. Allocated memory was 315.6MB in the beginning and 468.7MB in the end (delta: 153.1MB). Free memory was 211.1MB in the beginning and 414.8MB in the end (delta: -203.7MB). Peak memory consumption was 217.3MB. 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 constructing difference of abstraction (422states) and FLOYD_HOARE automaton (currently 36 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.4s, OverallIterations: 6, TraceHistogramMax: 35, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 330.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 1189 SdHoareTripleChecker+Valid, 119.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1188 mSDsluCounter, 3146 SdHoareTripleChecker+Invalid, 118.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2135 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2984 IncrementalHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 1011 mSDtfsCounter, 2984 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1766 GetRequests, 1640 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 297.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=422occurred in iteration=4, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 338 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 544.9s InterpolantComputationTime, 1557 NumberOfCodeBlocks, 1557 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1329 ConstructedInterpolants, 5 QuantifiedInterpolants, 16460 SizeOfPredicates, 32 NumberOfNonLiveVariables, 3052 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 13314/14280 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