/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 19:56:06,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 19:56:06,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 19:56:06,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 19:56:06,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 19:56:06,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 19:56:06,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 19:56:06,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 19:56:06,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 19:56:06,910 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 19:56:06,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 19:56:06,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 19:56:06,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 19:56:06,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 19:56:06,912 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 19:56:06,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 19:56:06,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 19:56:06,913 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 19:56:06,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 19:56:06,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 19:56:06,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 19:56:06,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 19:56:06,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 19:56:06,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 19:56:06,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 19:56:06,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 19:56:06,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 19:56:06,921 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 19:56:06,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 19:56:06,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 19:56:06,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 19:56:06,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 19:56:06,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:56:06,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 19:56:06,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 19:56:06,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 19:56:06,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 19:56:06,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 19:56:06,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 19:56:06,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 19:56:06,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 19:56:06,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 19:56:06,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 19:56:06,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 19:56:07,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 19:56:07,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 19:56:07,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 19:56:07,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 19:56:07,178 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 19:56:07,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-12-20 19:56:08,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 19:56:08,534 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 19:56:08,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-12-20 19:56:08,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71babd42/4a518f2c01694b948c430088cf82b898/FLAG75ceb9cdc [2023-12-20 19:56:08,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71babd42/4a518f2c01694b948c430088cf82b898 [2023-12-20 19:56:08,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 19:56:08,560 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 19:56:08,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 19:56:08,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 19:56:08,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 19:56:08,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:56:08" (1/1) ... [2023-12-20 19:56:08,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a6e4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:08, skipping insertion in model container [2023-12-20 19:56:08,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:56:08" (1/1) ... [2023-12-20 19:56:08,611 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 19:56:08,733 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_fillercodesize_ps-cn-500_file-30.i[916,929] [2023-12-20 19:56:08,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:56:08,926 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 19:56:08,946 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_fillercodesize_ps-cn-500_file-30.i[916,929] [2023-12-20 19:56:09,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:56:09,061 INFO L206 MainTranslator]: Completed translation [2023-12-20 19:56:09,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09 WrapperNode [2023-12-20 19:56:09,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 19:56:09,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 19:56:09,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 19:56:09,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 19:56:09,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,153 INFO L138 Inliner]: procedures = 26, calls = 125, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 819 [2023-12-20 19:56:09,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 19:56:09,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 19:56:09,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 19:56:09,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 19:56:09,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,227 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]. [2023-12-20 19:56:09,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 19:56:09,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 19:56:09,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 19:56:09,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 19:56:09,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (1/1) ... [2023-12-20 19:56:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:56:09,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:09,333 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) [2023-12-20 19:56:09,357 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 [2023-12-20 19:56:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 19:56:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 19:56:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 19:56:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 19:56:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 19:56:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 19:56:09,514 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 19:56:09,516 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 19:56:10,282 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 19:56:10,343 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 19:56:10,344 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 19:56:10,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:56:10 BoogieIcfgContainer [2023-12-20 19:56:10,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 19:56:10,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 19:56:10,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 19:56:10,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 19:56:10,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:56:08" (1/3) ... [2023-12-20 19:56:10,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b6cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:56:10, skipping insertion in model container [2023-12-20 19:56:10,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:56:09" (2/3) ... [2023-12-20 19:56:10,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b6cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:56:10, skipping insertion in model container [2023-12-20 19:56:10,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:56:10" (3/3) ... [2023-12-20 19:56:10,353 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-12-20 19:56:10,366 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 19:56:10,367 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 19:56:10,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 19:56:10,431 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;@1ee6fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 19:56:10,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 19:56:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 200 states have (on average 1.565) internal successors, (313), 201 states have internal predecessors, (313), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-20 19:56:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-12-20 19:56:10,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:10,479 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:10,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:10,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2075438533, now seen corresponding path program 1 times [2023-12-20 19:56:10,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:10,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914349815] [2023-12-20 19:56:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:10,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914349815] [2023-12-20 19:56:10,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 19:56:10,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681038976] [2023-12-20 19:56:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:10,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:10,869 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) [2023-12-20 19:56:10,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 19:56:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:11,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 19:56:11,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24642 trivial. 0 not checked. [2023-12-20 19:56:11,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681038976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 19:56:11,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262064689] [2023-12-20 19:56:11,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 19:56:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 19:56:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:56:11,531 INFO L87 Difference]: Start difference. First operand has 315 states, 200 states have (on average 1.565) internal successors, (313), 201 states have internal predecessors, (313), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-20 19:56:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:11,617 INFO L93 Difference]: Finished difference Result 627 states and 1184 transitions. [2023-12-20 19:56:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 19:56:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) Word has length 718 [2023-12-20 19:56:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:11,629 INFO L225 Difference]: With dead ends: 627 [2023-12-20 19:56:11,629 INFO L226 Difference]: Without dead ends: 313 [2023-12-20 19:56:11,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:56:11,639 INFO L413 NwaCegarLoop]: 528 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, 528 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 [2023-12-20 19:56:11,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 528 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:56:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-20 19:56:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-12-20 19:56:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 199 states have (on average 1.5427135678391959) internal successors, (307), 199 states have internal predecessors, (307), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-20 19:56:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 531 transitions. [2023-12-20 19:56:11,721 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 531 transitions. Word has length 718 [2023-12-20 19:56:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:11,721 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 531 transitions. [2023-12-20 19:56:11,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-20 19:56:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 531 transitions. [2023-12-20 19:56:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-12-20 19:56:11,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:11,740 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:11,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 19:56:11,952 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 [2023-12-20 19:56:11,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:11,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1368974269, now seen corresponding path program 1 times [2023-12-20 19:56:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741056136] [2023-12-20 19:56:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:12,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991416859] [2023-12-20 19:56:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:12,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:12,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:12,096 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) [2023-12-20 19:56:12,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 19:56:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:12,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:56:12,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:12,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:12,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741056136] [2023-12-20 19:56:12,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991416859] [2023-12-20 19:56:12,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991416859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:12,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:12,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:56:12,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303509605] [2023-12-20 19:56:12,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:12,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:56:12,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:12,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:56:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:12,627 INFO L87 Difference]: Start difference. First operand 313 states and 531 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:12,728 INFO L93 Difference]: Finished difference Result 773 states and 1319 transitions. [2023-12-20 19:56:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:56:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 718 [2023-12-20 19:56:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:12,738 INFO L225 Difference]: With dead ends: 773 [2023-12-20 19:56:12,738 INFO L226 Difference]: Without dead ends: 461 [2023-12-20 19:56:12,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:12,746 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 253 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:12,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1083 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:56:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-20 19:56:12,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 458. [2023-12-20 19:56:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 327 states have (on average 1.6116207951070336) internal successors, (527), 328 states have internal predecessors, (527), 128 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (128), 127 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-20 19:56:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 783 transitions. [2023-12-20 19:56:12,821 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 783 transitions. Word has length 718 [2023-12-20 19:56:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:12,824 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 783 transitions. [2023-12-20 19:56:12,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 783 transitions. [2023-12-20 19:56:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-12-20 19:56:12,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:12,833 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:12,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:13,040 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 [2023-12-20 19:56:13,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:13,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 555634173, now seen corresponding path program 1 times [2023-12-20 19:56:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:13,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465607512] [2023-12-20 19:56:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:13,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:13,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:13,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148286877] [2023-12-20 19:56:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:13,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:13,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:13,125 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) [2023-12-20 19:56:13,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 19:56:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:13,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:56:13,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:13,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465607512] [2023-12-20 19:56:13,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148286877] [2023-12-20 19:56:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148286877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:13,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:56:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018649398] [2023-12-20 19:56:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:56:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:56:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:13,673 INFO L87 Difference]: Start difference. First operand 458 states and 783 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:13,755 INFO L93 Difference]: Finished difference Result 1240 states and 2109 transitions. [2023-12-20 19:56:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:56:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 718 [2023-12-20 19:56:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:13,767 INFO L225 Difference]: With dead ends: 1240 [2023-12-20 19:56:13,767 INFO L226 Difference]: Without dead ends: 783 [2023-12-20 19:56:13,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:13,771 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 320 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:13,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1037 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:56:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-12-20 19:56:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 780. [2023-12-20 19:56:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 548 states have (on average 1.583941605839416) internal successors, (868), 551 states have internal predecessors, (868), 227 states have call successors, (227), 4 states have call predecessors, (227), 4 states have return successors, (227), 224 states have call predecessors, (227), 227 states have call successors, (227) [2023-12-20 19:56:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1322 transitions. [2023-12-20 19:56:13,843 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1322 transitions. Word has length 718 [2023-12-20 19:56:13,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:13,844 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1322 transitions. [2023-12-20 19:56:13,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:13,845 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1322 transitions. [2023-12-20 19:56:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-12-20 19:56:13,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:13,851 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:13,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:14,059 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 [2023-12-20 19:56:14,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:14,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1133309569, now seen corresponding path program 1 times [2023-12-20 19:56:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184373809] [2023-12-20 19:56:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:14,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:14,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417350493] [2023-12-20 19:56:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:14,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:14,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:14,133 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) [2023-12-20 19:56:14,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 19:56:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:14,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:56:14,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:14,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184373809] [2023-12-20 19:56:14,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417350493] [2023-12-20 19:56:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417350493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:14,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:14,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:56:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388342170] [2023-12-20 19:56:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:14,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:56:14,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:56:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:14,650 INFO L87 Difference]: Start difference. First operand 780 states and 1322 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:14,730 INFO L93 Difference]: Finished difference Result 2187 states and 3705 transitions. [2023-12-20 19:56:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:56:14,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 718 [2023-12-20 19:56:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:14,739 INFO L225 Difference]: With dead ends: 2187 [2023-12-20 19:56:14,740 INFO L226 Difference]: Without dead ends: 1408 [2023-12-20 19:56:14,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:14,746 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 319 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:14,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1224 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:56:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2023-12-20 19:56:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1404. [2023-12-20 19:56:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1000 states have (on average 1.585) internal successors, (1585), 1007 states have internal predecessors, (1585), 395 states have call successors, (395), 8 states have call predecessors, (395), 8 states have return successors, (395), 388 states have call predecessors, (395), 395 states have call successors, (395) [2023-12-20 19:56:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2375 transitions. [2023-12-20 19:56:14,850 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2375 transitions. Word has length 718 [2023-12-20 19:56:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:14,852 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 2375 transitions. [2023-12-20 19:56:14,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2375 transitions. [2023-12-20 19:56:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2023-12-20 19:56:14,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:14,860 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:14,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:15,072 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 [2023-12-20 19:56:15,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:15,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash -200626049, now seen corresponding path program 1 times [2023-12-20 19:56:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:15,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371273368] [2023-12-20 19:56:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:15,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531944883] [2023-12-20 19:56:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:15,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:15,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:15,177 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) [2023-12-20 19:56:15,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 19:56:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:15,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 19:56:15,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:15,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371273368] [2023-12-20 19:56:15,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531944883] [2023-12-20 19:56:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531944883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:15,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:15,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 19:56:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185752191] [2023-12-20 19:56:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 19:56:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 19:56:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 19:56:15,696 INFO L87 Difference]: Start difference. First operand 1404 states and 2375 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:16,574 INFO L93 Difference]: Finished difference Result 5978 states and 9997 transitions. [2023-12-20 19:56:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 19:56:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 719 [2023-12-20 19:56:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:16,599 INFO L225 Difference]: With dead ends: 5978 [2023-12-20 19:56:16,599 INFO L226 Difference]: Without dead ends: 4575 [2023-12-20 19:56:16,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:56:16,607 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 868 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:16,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2231 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 19:56:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2023-12-20 19:56:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4561. [2023-12-20 19:56:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4561 states, 3114 states have (on average 1.5311496467565833) internal successors, (4768), 3144 states have internal predecessors, (4768), 1414 states have call successors, (1414), 32 states have call predecessors, (1414), 32 states have return successors, (1414), 1384 states have call predecessors, (1414), 1414 states have call successors, (1414) [2023-12-20 19:56:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 7596 transitions. [2023-12-20 19:56:16,989 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 7596 transitions. Word has length 719 [2023-12-20 19:56:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:16,990 INFO L495 AbstractCegarLoop]: Abstraction has 4561 states and 7596 transitions. [2023-12-20 19:56:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 7596 transitions. [2023-12-20 19:56:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2023-12-20 19:56:16,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:16,998 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:17,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:17,207 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 [2023-12-20 19:56:17,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:17,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 617022401, now seen corresponding path program 1 times [2023-12-20 19:56:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744525645] [2023-12-20 19:56:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:17,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:17,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25446130] [2023-12-20 19:56:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:17,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:17,273 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) [2023-12-20 19:56:17,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 19:56:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:17,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 19:56:17,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:18,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:18,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744525645] [2023-12-20 19:56:18,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25446130] [2023-12-20 19:56:18,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25446130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:18,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:56:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740566121] [2023-12-20 19:56:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 19:56:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 19:56:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 19:56:18,507 INFO L87 Difference]: Start difference. First operand 4561 states and 7596 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:20,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:20,448 INFO L93 Difference]: Finished difference Result 19413 states and 32315 transitions. [2023-12-20 19:56:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 19:56:20,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 719 [2023-12-20 19:56:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:20,524 INFO L225 Difference]: With dead ends: 19413 [2023-12-20 19:56:20,524 INFO L226 Difference]: Without dead ends: 14853 [2023-12-20 19:56:20,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:56:20,544 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 1703 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:20,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 2763 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 19:56:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14853 states. [2023-12-20 19:56:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14853 to 13677. [2023-12-20 19:56:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13677 states, 9338 states have (on average 1.5056757335617905) internal successors, (14060), 9428 states have internal predecessors, (14060), 4242 states have call successors, (4242), 96 states have call predecessors, (4242), 96 states have return successors, (4242), 4152 states have call predecessors, (4242), 4242 states have call successors, (4242) [2023-12-20 19:56:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13677 states to 13677 states and 22544 transitions. [2023-12-20 19:56:21,792 INFO L78 Accepts]: Start accepts. Automaton has 13677 states and 22544 transitions. Word has length 719 [2023-12-20 19:56:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:21,793 INFO L495 AbstractCegarLoop]: Abstraction has 13677 states and 22544 transitions. [2023-12-20 19:56:21,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13677 states and 22544 transitions. [2023-12-20 19:56:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-20 19:56:21,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:21,806 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:21,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:22,018 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 [2023-12-20 19:56:22,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:22,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash 961395704, now seen corresponding path program 1 times [2023-12-20 19:56:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:22,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758967982] [2023-12-20 19:56:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:22,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400839328] [2023-12-20 19:56:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:22,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:22,084 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) [2023-12-20 19:56:22,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 19:56:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:22,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:56:22,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 11841 proven. 126 refuted. 0 times theorem prover too weak. 12897 trivial. 0 not checked. [2023-12-20 19:56:22,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:56:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 207 proven. 126 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-12-20 19:56:23,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758967982] [2023-12-20 19:56:23,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400839328] [2023-12-20 19:56:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400839328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:56:23,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:56:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 19:56:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653839833] [2023-12-20 19:56:23,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:56:23,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 19:56:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 19:56:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 19:56:23,348 INFO L87 Difference]: Start difference. First operand 13677 states and 22544 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-20 19:56:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:24,183 INFO L93 Difference]: Finished difference Result 21113 states and 34749 transitions. [2023-12-20 19:56:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:56:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 720 [2023-12-20 19:56:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:24,220 INFO L225 Difference]: With dead ends: 21113 [2023-12-20 19:56:24,220 INFO L226 Difference]: Without dead ends: 7437 [2023-12-20 19:56:24,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1442 GetRequests, 1432 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:56:24,258 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 324 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:24,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 985 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 19:56:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7437 states. [2023-12-20 19:56:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7437 to 7317. [2023-12-20 19:56:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7317 states, 4958 states have (on average 1.4985881403791852) internal successors, (7430), 5000 states have internal predecessors, (7430), 2298 states have call successors, (2298), 60 states have call predecessors, (2298), 60 states have return successors, (2298), 2256 states have call predecessors, (2298), 2298 states have call successors, (2298) [2023-12-20 19:56:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 12026 transitions. [2023-12-20 19:56:24,862 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 12026 transitions. Word has length 720 [2023-12-20 19:56:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:24,863 INFO L495 AbstractCegarLoop]: Abstraction has 7317 states and 12026 transitions. [2023-12-20 19:56:24,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-20 19:56:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 12026 transitions. [2023-12-20 19:56:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-20 19:56:24,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:24,873 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:24,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 19:56:25,082 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 [2023-12-20 19:56:25,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:25,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1304824568, now seen corresponding path program 1 times [2023-12-20 19:56:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:25,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802562331] [2023-12-20 19:56:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:25,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944883287] [2023-12-20 19:56:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:25,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:25,154 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) [2023-12-20 19:56:25,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 19:56:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:25,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 19:56:25,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:25,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:25,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:25,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802562331] [2023-12-20 19:56:25,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:25,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944883287] [2023-12-20 19:56:25,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944883287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:25,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:25,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 19:56:25,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343383844] [2023-12-20 19:56:25,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:25,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 19:56:25,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:25,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 19:56:25,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 19:56:25,752 INFO L87 Difference]: Start difference. First operand 7317 states and 12026 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:27,115 INFO L93 Difference]: Finished difference Result 26259 states and 43037 transitions. [2023-12-20 19:56:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 19:56:27,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-20 19:56:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:27,180 INFO L225 Difference]: With dead ends: 26259 [2023-12-20 19:56:27,180 INFO L226 Difference]: Without dead ends: 18943 [2023-12-20 19:56:27,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:56:27,211 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 865 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:27,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2183 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 19:56:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18943 states. [2023-12-20 19:56:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18943 to 18843. [2023-12-20 19:56:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18843 states, 12518 states have (on average 1.4697235980188528) internal successors, (18398), 12626 states have internal predecessors, (18398), 6156 states have call successors, (6156), 168 states have call predecessors, (6156), 168 states have return successors, (6156), 6048 states have call predecessors, (6156), 6156 states have call successors, (6156) [2023-12-20 19:56:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18843 states to 18843 states and 30710 transitions. [2023-12-20 19:56:28,839 INFO L78 Accepts]: Start accepts. Automaton has 18843 states and 30710 transitions. Word has length 720 [2023-12-20 19:56:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:28,840 INFO L495 AbstractCegarLoop]: Abstraction has 18843 states and 30710 transitions. [2023-12-20 19:56:28,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 18843 states and 30710 transitions. [2023-12-20 19:56:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-20 19:56:28,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:28,854 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:28,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:29,062 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 [2023-12-20 19:56:29,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:29,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1363238600, now seen corresponding path program 1 times [2023-12-20 19:56:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312544392] [2023-12-20 19:56:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:29,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273517709] [2023-12-20 19:56:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:29,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:29,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:29,139 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) [2023-12-20 19:56:29,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 19:56:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:29,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 19:56:29,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 111 proven. 333 refuted. 0 times theorem prover too weak. 24420 trivial. 0 not checked. [2023-12-20 19:56:30,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:56:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-12-20 19:56:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312544392] [2023-12-20 19:56:31,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273517709] [2023-12-20 19:56:31,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273517709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:56:31,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:56:31,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-20 19:56:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913045948] [2023-12-20 19:56:31,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:56:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 19:56:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 19:56:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:56:31,051 INFO L87 Difference]: Start difference. First operand 18843 states and 30710 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 2 states have call successors, (223), 2 states have call predecessors, (223), 4 states have return successors, (224), 1 states have call predecessors, (224), 2 states have call successors, (224) [2023-12-20 19:56:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:32,553 INFO L93 Difference]: Finished difference Result 25942 states and 41744 transitions. [2023-12-20 19:56:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:56:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 2 states have call successors, (223), 2 states have call predecessors, (223), 4 states have return successors, (224), 1 states have call predecessors, (224), 2 states have call successors, (224) Word has length 720 [2023-12-20 19:56:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:32,626 INFO L225 Difference]: With dead ends: 25942 [2023-12-20 19:56:32,626 INFO L226 Difference]: Without dead ends: 19660 [2023-12-20 19:56:32,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1431 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2023-12-20 19:56:32,653 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 604 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:32,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 987 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 19:56:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19660 states. [2023-12-20 19:56:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19660 to 19323. [2023-12-20 19:56:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19323 states, 12878 states have (on average 1.4503804938655072) internal successors, (18678), 12986 states have internal predecessors, (18678), 6156 states have call successors, (6156), 288 states have call predecessors, (6156), 288 states have return successors, (6156), 6048 states have call predecessors, (6156), 6156 states have call successors, (6156) [2023-12-20 19:56:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19323 states to 19323 states and 30990 transitions. [2023-12-20 19:56:34,411 INFO L78 Accepts]: Start accepts. Automaton has 19323 states and 30990 transitions. Word has length 720 [2023-12-20 19:56:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:34,412 INFO L495 AbstractCegarLoop]: Abstraction has 19323 states and 30990 transitions. [2023-12-20 19:56:34,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 2 states have call successors, (223), 2 states have call predecessors, (223), 4 states have return successors, (224), 1 states have call predecessors, (224), 2 states have call successors, (224) [2023-12-20 19:56:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 19323 states and 30990 transitions. [2023-12-20 19:56:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-20 19:56:34,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:34,426 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:34,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:34,634 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 [2023-12-20 19:56:34,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:34,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash -709236917, now seen corresponding path program 1 times [2023-12-20 19:56:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760389601] [2023-12-20 19:56:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:34,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167258007] [2023-12-20 19:56:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:34,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:34,732 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) [2023-12-20 19:56:34,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 19:56:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:35,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:56:35,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:56:35,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:56:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:35,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760389601] [2023-12-20 19:56:35,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:35,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167258007] [2023-12-20 19:56:35,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167258007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:56:35,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:56:35,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:56:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769691458] [2023-12-20 19:56:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:56:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:56:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:56:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:35,223 INFO L87 Difference]: Start difference. First operand 19323 states and 30990 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:56:36,287 INFO L93 Difference]: Finished difference Result 38645 states and 61979 transitions. [2023-12-20 19:56:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:56:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 721 [2023-12-20 19:56:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:56:36,365 INFO L225 Difference]: With dead ends: 38645 [2023-12-20 19:56:36,366 INFO L226 Difference]: Without dead ends: 19323 [2023-12-20 19:56:36,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:56:36,425 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 17 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:56:36,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1012 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:56:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19323 states. [2023-12-20 19:56:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19323 to 19323. [2023-12-20 19:56:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19323 states, 12878 states have (on average 1.4410622767510484) internal successors, (18558), 12986 states have internal predecessors, (18558), 6156 states have call successors, (6156), 288 states have call predecessors, (6156), 288 states have return successors, (6156), 6048 states have call predecessors, (6156), 6156 states have call successors, (6156) [2023-12-20 19:56:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19323 states to 19323 states and 30870 transitions. [2023-12-20 19:56:38,129 INFO L78 Accepts]: Start accepts. Automaton has 19323 states and 30870 transitions. Word has length 721 [2023-12-20 19:56:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:56:38,130 INFO L495 AbstractCegarLoop]: Abstraction has 19323 states and 30870 transitions. [2023-12-20 19:56:38,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:56:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 19323 states and 30870 transitions. [2023-12-20 19:56:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-20 19:56:38,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:56:38,144 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:56:38,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 19:56:38,352 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 [2023-12-20 19:56:38,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:56:38,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:56:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash 637850013, now seen corresponding path program 1 times [2023-12-20 19:56:38,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:56:38,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837922928] [2023-12-20 19:56:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:38,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:56:38,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:56:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781701062] [2023-12-20 19:56:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:56:38,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:56:38,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:56:38,412 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) [2023-12-20 19:56:38,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 19:56:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:56:38,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 19:56:38,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:56:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 12513 proven. 174 refuted. 0 times theorem prover too weak. 12177 trivial. 0 not checked. [2023-12-20 19:56:41,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:56:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 159 proven. 174 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-12-20 19:56:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:56:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837922928] [2023-12-20 19:56:42,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:56:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781701062] [2023-12-20 19:56:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781701062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:56:42,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:56:42,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-20 19:56:42,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774325185] [2023-12-20 19:56:42,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:56:42,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 19:56:42,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:56:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 19:56:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-20 19:56:42,845 INFO L87 Difference]: Start difference. First operand 19323 states and 30870 transitions. Second operand has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 4 states have call successors, (224), 3 states have call predecessors, (224), 5 states have return successors, (224), 4 states have call predecessors, (224), 4 states have call successors, (224) [2023-12-20 19:57:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:02,501 INFO L93 Difference]: Finished difference Result 267073 states and 423745 transitions. [2023-12-20 19:57:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 19:57:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 4 states have call successors, (224), 3 states have call predecessors, (224), 5 states have return successors, (224), 4 states have call predecessors, (224), 4 states have call successors, (224) Word has length 722 [2023-12-20 19:57:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:03,779 INFO L225 Difference]: With dead ends: 267073 [2023-12-20 19:57:03,779 INFO L226 Difference]: Without dead ends: 247751 [2023-12-20 19:57:04,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1505 GetRequests, 1441 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1167, Invalid=3123, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 19:57:04,079 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 7218 mSDsluCounter, 4943 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 2919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7489 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 8009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2919 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:04,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7489 Valid, 5766 Invalid, 8009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2919 Valid, 5090 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 19:57:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247751 states. [2023-12-20 19:57:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247751 to 160455. [2023-12-20 19:57:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160455 states, 108482 states have (on average 1.4418613226157335) internal successors, (156416), 109526 states have internal predecessors, (156416), 49116 states have call successors, (49116), 2856 states have call predecessors, (49116), 2856 states have return successors, (49116), 48072 states have call predecessors, (49116), 49116 states have call successors, (49116) [2023-12-20 19:57:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160455 states to 160455 states and 254648 transitions. [2023-12-20 19:57:21,218 INFO L78 Accepts]: Start accepts. Automaton has 160455 states and 254648 transitions. Word has length 722 [2023-12-20 19:57:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:21,219 INFO L495 AbstractCegarLoop]: Abstraction has 160455 states and 254648 transitions. [2023-12-20 19:57:21,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 4 states have call successors, (224), 3 states have call predecessors, (224), 5 states have return successors, (224), 4 states have call predecessors, (224), 4 states have call successors, (224) [2023-12-20 19:57:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 160455 states and 254648 transitions. [2023-12-20 19:57:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-20 19:57:21,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:21,262 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:21,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:21,476 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 [2023-12-20 19:57:21,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:21,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1513869019, now seen corresponding path program 1 times [2023-12-20 19:57:21,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:21,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700479954] [2023-12-20 19:57:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:21,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396445361] [2023-12-20 19:57:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:21,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:21,538 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) [2023-12-20 19:57:21,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 19:57:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:22,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 19:57:22,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-20 19:57:22,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700479954] [2023-12-20 19:57:22,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:22,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396445361] [2023-12-20 19:57:22,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396445361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:22,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:22,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:57:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910623721] [2023-12-20 19:57:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:22,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 19:57:22,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 19:57:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:57:22,307 INFO L87 Difference]: Start difference. First operand 160455 states and 254648 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-20 19:57:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:45,591 INFO L93 Difference]: Finished difference Result 431339 states and 684992 transitions. [2023-12-20 19:57:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:57:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 722 [2023-12-20 19:57:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:46,966 INFO L225 Difference]: With dead ends: 431339 [2023-12-20 19:57:46,966 INFO L226 Difference]: Without dead ends: 324369 [2023-12-20 19:57:47,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 19:57:47,222 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1413 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:47,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 2728 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 19:57:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324369 states.