/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 17:35:47,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 17:35:47,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 17:35:47,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 17:35:47,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 17:35:47,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 17:35:47,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 17:35:47,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 17:35:47,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 17:35:47,205 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 17:35:47,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 17:35:47,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 17:35:47,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 17:35:47,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 17:35:47,207 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 17:35:47,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 17:35:47,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 17:35:47,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 17:35:47,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 17:35:47,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 17:35:47,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 17:35:47,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 17:35:47,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 17:35:47,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 17:35:47,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 17:35:47,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 17:35:47,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 17:35:47,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 17:35:47,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 17:35:47,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:35:47,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 17:35:47,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 17:35:47,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 17:35:47,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 17:35:47,212 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 17:35:47,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 17:35:47,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 17:35:47,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 17:35:47,382 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 17:35:47,383 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 17:35:47,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c [2023-12-25 17:35:48,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 17:35:48,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 17:35:48,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c [2023-12-25 17:35:48,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af7de5ec/49832546cf0f4cbda5b6b3305c44168c/FLAG3750912a4 [2023-12-25 17:35:48,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af7de5ec/49832546cf0f4cbda5b6b3305c44168c [2023-12-25 17:35:48,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 17:35:48,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 17:35:48,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 17:35:48,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 17:35:48,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 17:35:48,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:35:48" (1/1) ... [2023-12-25 17:35:48,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aee779f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:48, skipping insertion in model container [2023-12-25 17:35:48,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:35:48" (1/1) ... [2023-12-25 17:35:48,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 17:35:48,801 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c[1176,1189] [2023-12-25 17:35:49,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:35:49,241 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 17:35:49,249 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c[1176,1189] [2023-12-25 17:35:49,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:35:49,525 INFO L206 MainTranslator]: Completed translation [2023-12-25 17:35:49,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49 WrapperNode [2023-12-25 17:35:49,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 17:35:49,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 17:35:49,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 17:35:49,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 17:35:49,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:49,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:50,772 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 17116 [2023-12-25 17:35:50,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 17:35:50,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 17:35:50,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 17:35:50,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 17:35:50,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:50,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:51,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:51,336 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]. [2023-12-25 17:35:51,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:51,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:51,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:51,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:51,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:52,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:52,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 17:35:52,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 17:35:52,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 17:35:52,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 17:35:52,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (1/1) ... [2023-12-25 17:35:52,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:35:52,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:35:52,455 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) [2023-12-25 17:35:52,457 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 [2023-12-25 17:35:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 17:35:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 17:35:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 17:35:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 17:35:53,157 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 17:35:53,159 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 17:35:59,351 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 17:35:59,474 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 17:35:59,474 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 17:35:59,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:35:59 BoogieIcfgContainer [2023-12-25 17:35:59,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 17:35:59,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 17:35:59,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 17:35:59,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 17:35:59,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:35:48" (1/3) ... [2023-12-25 17:35:59,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fefe333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:35:59, skipping insertion in model container [2023-12-25 17:35:59,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:35:49" (2/3) ... [2023-12-25 17:35:59,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fefe333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:35:59, skipping insertion in model container [2023-12-25 17:35:59,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:35:59" (3/3) ... [2023-12-25 17:35:59,480 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.6.prop1-func-interl.c [2023-12-25 17:35:59,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 17:35:59,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 17:35:59,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 17:35:59,556 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;@61fe7ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 17:35:59,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 17:35:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 4147 states, 4145 states have (on average 1.6721351025331725) internal successors, (6931), 4146 states have internal predecessors, (6931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:35:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-25 17:35:59,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:35:59,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:35:59,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:35:59,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:35:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1033395031, now seen corresponding path program 1 times [2023-12-25 17:35:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:35:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311845236] [2023-12-25 17:35:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:35:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:35:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:00,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:00,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311845236] [2023-12-25 17:36:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311845236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:00,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:00,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531969115] [2023-12-25 17:36:00,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:00,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:00,469 INFO L87 Difference]: Start difference. First operand has 4147 states, 4145 states have (on average 1.6721351025331725) internal successors, (6931), 4146 states have internal predecessors, (6931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:00,643 INFO L93 Difference]: Finished difference Result 8140 states and 13608 transitions. [2023-12-25 17:36:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:00,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-25 17:36:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:00,668 INFO L225 Difference]: With dead ends: 8140 [2023-12-25 17:36:00,668 INFO L226 Difference]: Without dead ends: 4147 [2023-12-25 17:36:00,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:00,681 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 1 mSDsluCounter, 13843 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20767 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:00,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20767 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:00,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2023-12-25 17:36:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 4147. [2023-12-25 17:36:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 1.6712493970091655) internal successors, (6929), 4146 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 6929 transitions. [2023-12-25 17:36:00,798 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 6929 transitions. Word has length 198 [2023-12-25 17:36:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:00,802 INFO L495 AbstractCegarLoop]: Abstraction has 4147 states and 6929 transitions. [2023-12-25 17:36:00,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 6929 transitions. [2023-12-25 17:36:00,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-25 17:36:00,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:00,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:00,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 17:36:00,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:00,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1968748777, now seen corresponding path program 1 times [2023-12-25 17:36:00,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:00,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292744913] [2023-12-25 17:36:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:01,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292744913] [2023-12-25 17:36:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292744913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337156505] [2023-12-25 17:36:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:01,132 INFO L87 Difference]: Start difference. First operand 4147 states and 6929 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:01,249 INFO L93 Difference]: Finished difference Result 8143 states and 13606 transitions. [2023-12-25 17:36:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:01,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-25 17:36:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:01,261 INFO L225 Difference]: With dead ends: 8143 [2023-12-25 17:36:01,261 INFO L226 Difference]: Without dead ends: 4150 [2023-12-25 17:36:01,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:01,268 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 1 mSDsluCounter, 13841 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20765 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:01,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20765 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2023-12-25 17:36:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4149. [2023-12-25 17:36:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 1.6709257473481196) internal successors, (6931), 4148 states have internal predecessors, (6931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 6931 transitions. [2023-12-25 17:36:01,325 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 6931 transitions. Word has length 199 [2023-12-25 17:36:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:01,326 INFO L495 AbstractCegarLoop]: Abstraction has 4149 states and 6931 transitions. [2023-12-25 17:36:01,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 6931 transitions. [2023-12-25 17:36:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-25 17:36:01,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:01,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 17:36:01,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:01,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1112101245, now seen corresponding path program 1 times [2023-12-25 17:36:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299986411] [2023-12-25 17:36:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:01,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299986411] [2023-12-25 17:36:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299986411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474930656] [2023-12-25 17:36:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:36:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:36:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:36:01,735 INFO L87 Difference]: Start difference. First operand 4149 states and 6931 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:01,982 INFO L93 Difference]: Finished difference Result 12261 states and 20486 transitions. [2023-12-25 17:36:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:36:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2023-12-25 17:36:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:02,009 INFO L225 Difference]: With dead ends: 12261 [2023-12-25 17:36:02,009 INFO L226 Difference]: Without dead ends: 8266 [2023-12-25 17:36:02,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:36:02,016 INFO L413 NwaCegarLoop]: 7136 mSDtfsCounter, 26940 mSDsluCounter, 13839 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26940 SdHoareTripleChecker+Valid, 20975 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:02,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26940 Valid, 20975 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2023-12-25 17:36:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 4283. [2023-12-25 17:36:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 4282 states have (on average 1.6704810836057917) internal successors, (7153), 4282 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 7153 transitions. [2023-12-25 17:36:02,104 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 7153 transitions. Word has length 200 [2023-12-25 17:36:02,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:02,105 INFO L495 AbstractCegarLoop]: Abstraction has 4283 states and 7153 transitions. [2023-12-25 17:36:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 7153 transitions. [2023-12-25 17:36:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2750 [2023-12-25 17:36:02,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:02,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:02,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 17:36:02,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:02,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash -968616351, now seen corresponding path program 1 times [2023-12-25 17:36:02,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:02,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032382917] [2023-12-25 17:36:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:02,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:02,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:02,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032561934] [2023-12-25 17:36:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:02,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:02,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:02,477 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) [2023-12-25 17:36:02,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 17:36:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:05,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 11421 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:36:05,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:05,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:05,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032382917] [2023-12-25 17:36:05,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:05,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032561934] [2023-12-25 17:36:05,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032561934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:05,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:05,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372592187] [2023-12-25 17:36:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:05,528 INFO L87 Difference]: Start difference. First operand 4283 states and 7153 transitions. Second operand has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:05,625 INFO L93 Difference]: Finished difference Result 8288 states and 13844 transitions. [2023-12-25 17:36:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:05,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2749 [2023-12-25 17:36:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:05,636 INFO L225 Difference]: With dead ends: 8288 [2023-12-25 17:36:05,636 INFO L226 Difference]: Without dead ends: 4293 [2023-12-25 17:36:05,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2746 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:05,641 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 12 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20762 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:05,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20762 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2023-12-25 17:36:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 4285. [2023-12-25 17:36:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 4284 states have (on average 1.6701680672268908) internal successors, (7155), 4284 states have internal predecessors, (7155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 7155 transitions. [2023-12-25 17:36:05,691 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 7155 transitions. Word has length 2749 [2023-12-25 17:36:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:05,692 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 7155 transitions. [2023-12-25 17:36:05,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 7155 transitions. [2023-12-25 17:36:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2750 [2023-12-25 17:36:05,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:05,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:05,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 17:36:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:05,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:05,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1227453741, now seen corresponding path program 1 times [2023-12-25 17:36:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999097511] [2023-12-25 17:36:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:06,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:06,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915075184] [2023-12-25 17:36:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:06,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:06,242 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) [2023-12-25 17:36:06,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 17:36:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:08,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 11422 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:36:09,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:09,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999097511] [2023-12-25 17:36:09,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915075184] [2023-12-25 17:36:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915075184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852098009] [2023-12-25 17:36:09,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:09,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:09,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:09,084 INFO L87 Difference]: Start difference. First operand 4285 states and 7155 transitions. Second operand has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:09,196 INFO L93 Difference]: Finished difference Result 8291 states and 13846 transitions. [2023-12-25 17:36:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2749 [2023-12-25 17:36:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:09,218 INFO L225 Difference]: With dead ends: 8291 [2023-12-25 17:36:09,218 INFO L226 Difference]: Without dead ends: 4294 [2023-12-25 17:36:09,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2746 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:09,223 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 12 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20762 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 [2023-12-25 17:36:09,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20762 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2023-12-25 17:36:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4286. [2023-12-25 17:36:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 1.6700116686114352) internal successors, (7156), 4285 states have internal predecessors, (7156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 7156 transitions. [2023-12-25 17:36:09,273 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 7156 transitions. Word has length 2749 [2023-12-25 17:36:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:09,273 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 7156 transitions. [2023-12-25 17:36:09,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 7156 transitions. [2023-12-25 17:36:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2750 [2023-12-25 17:36:09,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:09,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:09,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:09,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:09,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1011757151, now seen corresponding path program 1 times [2023-12-25 17:36:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:09,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452811551] [2023-12-25 17:36:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:09,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22606200] [2023-12-25 17:36:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:09,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:09,726 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) [2023-12-25 17:36:09,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 17:36:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:12,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 11423 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:36:12,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:12,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:12,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:12,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452811551] [2023-12-25 17:36:12,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22606200] [2023-12-25 17:36:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22606200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:12,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:12,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456773920] [2023-12-25 17:36:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:12,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:12,302 INFO L87 Difference]: Start difference. First operand 4286 states and 7156 transitions. Second operand has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:12,385 INFO L93 Difference]: Finished difference Result 8293 states and 13848 transitions. [2023-12-25 17:36:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2749 [2023-12-25 17:36:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:12,393 INFO L225 Difference]: With dead ends: 8293 [2023-12-25 17:36:12,393 INFO L226 Difference]: Without dead ends: 4295 [2023-12-25 17:36:12,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2746 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:12,398 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 12 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20762 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 [2023-12-25 17:36:12,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20762 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2023-12-25 17:36:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 4287. [2023-12-25 17:36:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 4286 states have (on average 1.6698553429771348) internal successors, (7157), 4286 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 7157 transitions. [2023-12-25 17:36:12,444 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 7157 transitions. Word has length 2749 [2023-12-25 17:36:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:12,445 INFO L495 AbstractCegarLoop]: Abstraction has 4287 states and 7157 transitions. [2023-12-25 17:36:12,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 7157 transitions. [2023-12-25 17:36:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2750 [2023-12-25 17:36:12,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:12,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:12,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:12,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:12,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:12,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash 521036655, now seen corresponding path program 1 times [2023-12-25 17:36:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59847493] [2023-12-25 17:36:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:12,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:12,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311245814] [2023-12-25 17:36:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:12,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:12,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:12,958 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) [2023-12-25 17:36:12,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 17:36:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:15,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 11424 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:36:15,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:15,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59847493] [2023-12-25 17:36:15,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311245814] [2023-12-25 17:36:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311245814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:15,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197944518] [2023-12-25 17:36:15,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:15,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:15,536 INFO L87 Difference]: Start difference. First operand 4287 states and 7157 transitions. Second operand has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:15,611 INFO L93 Difference]: Finished difference Result 8295 states and 13850 transitions. [2023-12-25 17:36:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2749 [2023-12-25 17:36:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:15,619 INFO L225 Difference]: With dead ends: 8295 [2023-12-25 17:36:15,619 INFO L226 Difference]: Without dead ends: 4296 [2023-12-25 17:36:15,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2746 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:15,623 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 12 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20762 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 [2023-12-25 17:36:15,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20762 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2023-12-25 17:36:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 4288. [2023-12-25 17:36:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 1.669699090272918) internal successors, (7158), 4287 states have internal predecessors, (7158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 7158 transitions. [2023-12-25 17:36:15,672 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 7158 transitions. Word has length 2749 [2023-12-25 17:36:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:15,672 INFO L495 AbstractCegarLoop]: Abstraction has 4288 states and 7158 transitions. [2023-12-25 17:36:15,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 7158 transitions. [2023-12-25 17:36:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2750 [2023-12-25 17:36:15,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:15,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:15,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:15,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:15,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:15,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1531018849, now seen corresponding path program 1 times [2023-12-25 17:36:15,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:15,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102748788] [2023-12-25 17:36:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:15,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:16,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585595484] [2023-12-25 17:36:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:16,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:16,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:16,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:36:16,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 17:36:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:18,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 11425 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:36:18,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:18,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:18,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102748788] [2023-12-25 17:36:18,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:18,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585595484] [2023-12-25 17:36:18,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585595484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:18,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:18,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:36:18,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303237242] [2023-12-25 17:36:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:18,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:18,662 INFO L87 Difference]: Start difference. First operand 4288 states and 7158 transitions. Second operand has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:18,736 INFO L93 Difference]: Finished difference Result 8297 states and 13852 transitions. [2023-12-25 17:36:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:18,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2749 [2023-12-25 17:36:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:18,743 INFO L225 Difference]: With dead ends: 8297 [2023-12-25 17:36:18,743 INFO L226 Difference]: Without dead ends: 4297 [2023-12-25 17:36:18,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2746 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:18,747 INFO L413 NwaCegarLoop]: 6924 mSDtfsCounter, 12 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20762 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 [2023-12-25 17:36:18,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20762 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:36:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2023-12-25 17:36:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4289. [2023-12-25 17:36:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4289 states, 4288 states have (on average 1.6695429104477613) internal successors, (7159), 4288 states have internal predecessors, (7159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 7159 transitions. [2023-12-25 17:36:18,787 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 7159 transitions. Word has length 2749 [2023-12-25 17:36:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:18,788 INFO L495 AbstractCegarLoop]: Abstraction has 4289 states and 7159 transitions. [2023-12-25 17:36:18,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 4 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 7159 transitions. [2023-12-25 17:36:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2750 [2023-12-25 17:36:18,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:18,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:18,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:19,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:19,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2137392723, now seen corresponding path program 1 times [2023-12-25 17:36:19,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:19,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978112277] [2023-12-25 17:36:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:19,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:19,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887009084] [2023-12-25 17:36:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:19,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:19,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:19,229 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) [2023-12-25 17:36:19,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 17:36:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:21,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 11426 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:36:21,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:22,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:22,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978112277] [2023-12-25 17:36:22,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887009084] [2023-12-25 17:36:22,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887009084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:22,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:22,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 17:36:22,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040074740] [2023-12-25 17:36:22,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:22,172 INFO L87 Difference]: Start difference. First operand 4289 states and 7159 transitions. Second operand has 4 states, 4 states have (on average 687.25) internal successors, (2749), 3 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:23,777 INFO L93 Difference]: Finished difference Result 8295 states and 13845 transitions. [2023-12-25 17:36:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 3 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2749 [2023-12-25 17:36:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:23,784 INFO L225 Difference]: With dead ends: 8295 [2023-12-25 17:36:23,784 INFO L226 Difference]: Without dead ends: 4294 [2023-12-25 17:36:23,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2749 GetRequests, 2746 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:36:23,788 INFO L413 NwaCegarLoop]: 5527 mSDtfsCounter, 13398 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13398 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:23,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13398 Valid, 5683 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 17:36:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2023-12-25 17:36:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4289. [2023-12-25 17:36:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4289 states, 4288 states have (on average 1.6693097014925373) internal successors, (7158), 4288 states have internal predecessors, (7158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 7158 transitions. [2023-12-25 17:36:23,828 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 7158 transitions. Word has length 2749 [2023-12-25 17:36:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:23,828 INFO L495 AbstractCegarLoop]: Abstraction has 4289 states and 7158 transitions. [2023-12-25 17:36:23,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.25) internal successors, (2749), 3 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 7158 transitions. [2023-12-25 17:36:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2751 [2023-12-25 17:36:23,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:23,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:23,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:24,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:24,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:24,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash -448430075, now seen corresponding path program 1 times [2023-12-25 17:36:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:24,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450653753] [2023-12-25 17:36:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:24,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:24,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560897039] [2023-12-25 17:36:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:24,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:24,278 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) [2023-12-25 17:36:24,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 17:36:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:26,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 11427 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:36:26,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:27,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:36:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450653753] [2023-12-25 17:36:27,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560897039] [2023-12-25 17:36:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560897039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 17:36:27,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903197733] [2023-12-25 17:36:27,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:27,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:36:27,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:36:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:36:27,779 INFO L87 Difference]: Start difference. First operand 4289 states and 7158 transitions. Second operand has 4 states, 4 states have (on average 687.5) internal successors, (2750), 3 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:29,284 INFO L93 Difference]: Finished difference Result 8923 states and 14903 transitions. [2023-12-25 17:36:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:36:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 687.5) internal successors, (2750), 3 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2750 [2023-12-25 17:36:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:29,304 INFO L225 Difference]: With dead ends: 8923 [2023-12-25 17:36:29,304 INFO L226 Difference]: Without dead ends: 4922 [2023-12-25 17:36:29,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2750 GetRequests, 2747 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:36:29,308 INFO L413 NwaCegarLoop]: 6579 mSDtfsCounter, 13071 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13071 SdHoareTripleChecker+Valid, 7788 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:29,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13071 Valid, 7788 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 17:36:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2023-12-25 17:36:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4289. [2023-12-25 17:36:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4289 states, 4288 states have (on average 1.6690764925373134) internal successors, (7157), 4288 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 7157 transitions. [2023-12-25 17:36:29,350 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 7157 transitions. Word has length 2750 [2023-12-25 17:36:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:29,351 INFO L495 AbstractCegarLoop]: Abstraction has 4289 states and 7157 transitions. [2023-12-25 17:36:29,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 687.5) internal successors, (2750), 3 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 7157 transitions. [2023-12-25 17:36:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2752 [2023-12-25 17:36:29,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:29,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:29,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-25 17:36:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:29,616 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:29,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:29,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1646083928, now seen corresponding path program 1 times [2023-12-25 17:36:29,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:29,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574631156] [2023-12-25 17:36:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:29,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:29,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:29,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925018267] [2023-12-25 17:36:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:29,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:29,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:29,882 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) [2023-12-25 17:36:29,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 17:36:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:32,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 11428 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:36:32,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:32,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:36:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-25 17:36:32,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574631156] [2023-12-25 17:36:32,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925018267] [2023-12-25 17:36:32,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925018267] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:36:32,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:36:32,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:36:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738195178] [2023-12-25 17:36:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:32,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:36:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:36:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:36:32,994 INFO L87 Difference]: Start difference. First operand 4289 states and 7157 transitions. Second operand has 6 states, 6 states have (on average 444.0) internal successors, (2664), 6 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:38,928 INFO L93 Difference]: Finished difference Result 19951 states and 33199 transitions. [2023-12-25 17:36:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:36:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 444.0) internal successors, (2664), 6 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2751 [2023-12-25 17:36:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:38,992 INFO L225 Difference]: With dead ends: 19951 [2023-12-25 17:36:38,992 INFO L226 Difference]: Without dead ends: 12276 [2023-12-25 17:36:39,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5501 GetRequests, 5490 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:36:39,003 INFO L413 NwaCegarLoop]: 11227 mSDtfsCounter, 30401 mSDsluCounter, 27268 mSDsCounter, 0 mSdLazyCounter, 9836 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30401 SdHoareTripleChecker+Valid, 38495 SdHoareTripleChecker+Invalid, 10162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 9836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:39,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30401 Valid, 38495 Invalid, 10162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [326 Valid, 9836 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-25 17:36:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2023-12-25 17:36:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 4289. [2023-12-25 17:36:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4289 states, 4288 states have (on average 1.6690764925373134) internal successors, (7157), 4288 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 7157 transitions. [2023-12-25 17:36:39,089 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 7157 transitions. Word has length 2751 [2023-12-25 17:36:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:39,091 INFO L495 AbstractCegarLoop]: Abstraction has 4289 states and 7157 transitions. [2023-12-25 17:36:39,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 444.0) internal successors, (2664), 6 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 7157 transitions. [2023-12-25 17:36:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2753 [2023-12-25 17:36:39,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:39,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:39,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:39,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-25 17:36:39,359 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:39,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1088902152, now seen corresponding path program 1 times [2023-12-25 17:36:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:39,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564786473] [2023-12-25 17:36:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:39,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:36:39,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892834638] [2023-12-25 17:36:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:39,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:39,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:39,514 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) [2023-12-25 17:36:39,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 17:36:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:42,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 11431 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 17:36:42,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:44,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:36:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:53,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564786473] [2023-12-25 17:36:53,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:36:53,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892834638] [2023-12-25 17:36:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892834638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:36:53,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:36:53,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-25 17:36:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098045037] [2023-12-25 17:36:53,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:36:53,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 17:36:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 17:36:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-12-25 17:36:53,249 INFO L87 Difference]: Start difference. First operand 4289 states and 7157 transitions. Second operand has 24 states, 24 states have (on average 229.04166666666666) internal successors, (5497), 24 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:10,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:10,537 INFO L93 Difference]: Finished difference Result 37437 states and 62473 transitions. [2023-12-25 17:37:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-25 17:37:10,538 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 229.04166666666666) internal successors, (5497), 24 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2752 [2023-12-25 17:37:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:10,612 INFO L225 Difference]: With dead ends: 37437 [2023-12-25 17:37:10,612 INFO L226 Difference]: Without dead ends: 33434 [2023-12-25 17:37:10,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5548 GetRequests, 5487 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=779, Invalid=3127, Unknown=0, NotChecked=0, Total=3906 [2023-12-25 17:37:10,625 INFO L413 NwaCegarLoop]: 13758 mSDtfsCounter, 164426 mSDsluCounter, 214639 mSDsCounter, 0 mSdLazyCounter, 26513 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164426 SdHoareTripleChecker+Valid, 228397 SdHoareTripleChecker+Invalid, 26518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:10,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164426 Valid, 228397 Invalid, 26518 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [5 Valid, 26513 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-12-25 17:37:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33434 states. [2023-12-25 17:37:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33434 to 8416. [2023-12-25 17:37:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 8415 states have (on average 1.669162210338681) internal successors, (14046), 8415 states have internal predecessors, (14046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 14046 transitions. [2023-12-25 17:37:10,837 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 14046 transitions. Word has length 2752 [2023-12-25 17:37:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:10,839 INFO L495 AbstractCegarLoop]: Abstraction has 8416 states and 14046 transitions. [2023-12-25 17:37:10,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 229.04166666666666) internal successors, (5497), 24 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 14046 transitions. [2023-12-25 17:37:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2754 [2023-12-25 17:37:10,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:10,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:37:10,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 17:37:11,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:37:11,105 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:11,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:11,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1341138158, now seen corresponding path program 1 times [2023-12-25 17:37:11,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:11,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59268909] [2023-12-25 17:37:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:11,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:11,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:37:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089426940] [2023-12-25 17:37:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:11,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:37:11,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:37:11,276 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) [2023-12-25 17:37:11,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 17:37:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:13,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 11434 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 17:37:13,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:37:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:15,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:37:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59268909] [2023-12-25 17:37:15,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:37:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089426940] [2023-12-25 17:37:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089426940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 17:37:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357315392] [2023-12-25 17:37:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:15,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 17:37:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 17:37:15,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:37:15,560 INFO L87 Difference]: Start difference. First operand 8416 states and 14046 transitions. Second operand has 11 states, 11 states have (on average 250.27272727272728) internal successors, (2753), 10 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:16,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:16,518 INFO L93 Difference]: Finished difference Result 32756 states and 54669 transitions. [2023-12-25 17:37:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 17:37:16,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 250.27272727272728) internal successors, (2753), 10 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2753 [2023-12-25 17:37:16,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:16,544 INFO L225 Difference]: With dead ends: 32756 [2023-12-25 17:37:16,544 INFO L226 Difference]: Without dead ends: 24494 [2023-12-25 17:37:16,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2761 GetRequests, 2743 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:37:16,557 INFO L413 NwaCegarLoop]: 8392 mSDtfsCounter, 63040 mSDsluCounter, 65329 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63040 SdHoareTripleChecker+Valid, 73721 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:16,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63040 Valid, 73721 Invalid, 352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 17:37:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24494 states. [2023-12-25 17:37:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24494 to 9433. [2023-12-25 17:37:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9433 states, 9432 states have (on average 1.669529262086514) internal successors, (15747), 9432 states have internal predecessors, (15747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9433 states to 9433 states and 15747 transitions. [2023-12-25 17:37:16,737 INFO L78 Accepts]: Start accepts. Automaton has 9433 states and 15747 transitions. Word has length 2753 [2023-12-25 17:37:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:16,738 INFO L495 AbstractCegarLoop]: Abstraction has 9433 states and 15747 transitions. [2023-12-25 17:37:16,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 250.27272727272728) internal successors, (2753), 10 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 9433 states and 15747 transitions. [2023-12-25 17:37:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2754 [2023-12-25 17:37:16,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:16,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:37:16,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 17:37:17,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-25 17:37:17,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:17,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1414480804, now seen corresponding path program 1 times [2023-12-25 17:37:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:17,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662095678] [2023-12-25 17:37:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:17,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:37:17,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692498831] [2023-12-25 17:37:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:37:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:37:17,174 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) [2023-12-25 17:37:17,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 17:37:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:19,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 11434 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:37:19,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:37:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:19,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:37:19,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662095678] [2023-12-25 17:37:19,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:37:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692498831] [2023-12-25 17:37:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692498831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:19,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:19,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:37:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230452334] [2023-12-25 17:37:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:19,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:37:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:19,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:37:19,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:37:19,874 INFO L87 Difference]: Start difference. First operand 9433 states and 15747 transitions. Second operand has 6 states, 6 states have (on average 458.8333333333333) internal successors, (2753), 6 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:20,229 INFO L93 Difference]: Finished difference Result 27985 states and 46711 transitions. [2023-12-25 17:37:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:37:20,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 458.8333333333333) internal successors, (2753), 6 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2753 [2023-12-25 17:37:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:20,249 INFO L225 Difference]: With dead ends: 27985 [2023-12-25 17:37:20,249 INFO L226 Difference]: Without dead ends: 18706 [2023-12-25 17:37:20,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2755 GetRequests, 2749 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:37:20,259 INFO L413 NwaCegarLoop]: 7936 mSDtfsCounter, 6661 mSDsluCounter, 30696 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6661 SdHoareTripleChecker+Valid, 38632 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:20,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6661 Valid, 38632 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:37:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18706 states. [2023-12-25 17:37:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18706 to 9448. [2023-12-25 17:37:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9448 states, 9447 states have (on average 1.6684661797395999) internal successors, (15762), 9447 states have internal predecessors, (15762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9448 states to 9448 states and 15762 transitions. [2023-12-25 17:37:20,406 INFO L78 Accepts]: Start accepts. Automaton has 9448 states and 15762 transitions. Word has length 2753 [2023-12-25 17:37:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:20,407 INFO L495 AbstractCegarLoop]: Abstraction has 9448 states and 15762 transitions. [2023-12-25 17:37:20,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 458.8333333333333) internal successors, (2753), 6 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 9448 states and 15762 transitions. [2023-12-25 17:37:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2754 [2023-12-25 17:37:20,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:20,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:37:20,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 17:37:20,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-25 17:37:20,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:20,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1283322906, now seen corresponding path program 1 times [2023-12-25 17:37:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270526907] [2023-12-25 17:37:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:20,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:37:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277043615] [2023-12-25 17:37:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:20,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:37:20,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:37:20,831 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) [2023-12-25 17:37:20,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 17:37:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:23,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 11434 conjuncts, 294 conjunts are in the unsatisfiable core [2023-12-25 17:37:23,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:37:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:36,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:37:36,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270526907] [2023-12-25 17:37:36,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:37:36,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277043615] [2023-12-25 17:37:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277043615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:36,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2023-12-25 17:37:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382145899] [2023-12-25 17:37:36,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:36,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-25 17:37:36,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-25 17:37:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=9469, Unknown=0, NotChecked=0, Total=9702 [2023-12-25 17:37:36,143 INFO L87 Difference]: Start difference. First operand 9448 states and 15762 transitions. Second operand has 99 states, 99 states have (on average 27.80808080808081) internal successors, (2753), 98 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:41:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:41:13,326 INFO L93 Difference]: Finished difference Result 96739 states and 161229 transitions. [2023-12-25 17:41:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2023-12-25 17:41:13,327 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 27.80808080808081) internal successors, (2753), 98 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2753 [2023-12-25 17:41:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:41:13,436 INFO L225 Difference]: With dead ends: 96739 [2023-12-25 17:41:13,436 INFO L226 Difference]: Without dead ends: 87445 [2023-12-25 17:41:13,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2929 GetRequests, 2655 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10913 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=11328, Invalid=64572, Unknown=0, NotChecked=0, Total=75900 [2023-12-25 17:41:13,462 INFO L413 NwaCegarLoop]: 17948 mSDtfsCounter, 2016305 mSDsluCounter, 1648558 mSDsCounter, 0 mSdLazyCounter, 483465 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016305 SdHoareTripleChecker+Valid, 1666506 SdHoareTripleChecker+Invalid, 483509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.3s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 483465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:41:13,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016305 Valid, 1666506 Invalid, 483509 Unknown, 0 Unchecked, 4.3s Time], IncrementalHoareTripleChecker [44 Valid, 483465 Invalid, 0 Unknown, 0 Unchecked, 153.3s Time] [2023-12-25 17:41:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87445 states. [2023-12-25 17:41:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87445 to 12471. [2023-12-25 17:41:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12471 states, 12470 states have (on average 1.6651162790697673) internal successors, (20764), 12470 states have internal predecessors, (20764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:41:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12471 states to 12471 states and 20764 transitions. [2023-12-25 17:41:14,078 INFO L78 Accepts]: Start accepts. Automaton has 12471 states and 20764 transitions. Word has length 2753 [2023-12-25 17:41:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:41:14,079 INFO L495 AbstractCegarLoop]: Abstraction has 12471 states and 20764 transitions. [2023-12-25 17:41:14,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 27.80808080808081) internal successors, (2753), 98 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:41:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 12471 states and 20764 transitions. [2023-12-25 17:41:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2754 [2023-12-25 17:41:14,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:41:14,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:41:14,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 17:41:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-25 17:41:14,353 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:41:14,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:41:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1513273764, now seen corresponding path program 1 times [2023-12-25 17:41:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:41:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97272800] [2023-12-25 17:41:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:41:14,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:41:14,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:41:14,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412361803] [2023-12-25 17:41:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:41:14,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:41:14,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:41:14,557 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:41:14,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 17:41:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:41:17,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 11435 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-25 17:41:17,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:41:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:41:22,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:41:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:41:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:41:31,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97272800] [2023-12-25 17:41:31,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:41:31,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412361803] [2023-12-25 17:41:31,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412361803] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:41:31,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:41:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 29 [2023-12-25 17:41:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364858361] [2023-12-25 17:41:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:41:31,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 17:41:31,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:41:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 17:41:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-12-25 17:41:31,797 INFO L87 Difference]: Start difference. First operand 12471 states and 20764 transitions. Second operand has 15 states, 15 states have (on average 183.53333333333333) internal successors, (2753), 15 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:41:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:41:35,730 INFO L93 Difference]: Finished difference Result 106637 states and 177547 transitions. [2023-12-25 17:41:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 17:41:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 183.53333333333333) internal successors, (2753), 15 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2753 [2023-12-25 17:41:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:41:35,814 INFO L225 Difference]: With dead ends: 106637 [2023-12-25 17:41:35,814 INFO L226 Difference]: Without dead ends: 94320 [2023-12-25 17:41:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5575 GetRequests, 5494 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1065, Invalid=5741, Unknown=0, NotChecked=0, Total=6806 [2023-12-25 17:41:35,833 INFO L413 NwaCegarLoop]: 13755 mSDtfsCounter, 78612 mSDsluCounter, 174017 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78612 SdHoareTripleChecker+Valid, 187772 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:41:35,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78612 Valid, 187772 Invalid, 536 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [7 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 17:41:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94320 states. [2023-12-25 17:41:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94320 to 17376. [2023-12-25 17:41:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 17375 states have (on average 1.6633669064748202) internal successors, (28901), 17375 states have internal predecessors, (28901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:41:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 28901 transitions. [2023-12-25 17:41:36,493 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 28901 transitions. Word has length 2753 [2023-12-25 17:41:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:41:36,495 INFO L495 AbstractCegarLoop]: Abstraction has 17376 states and 28901 transitions. [2023-12-25 17:41:36,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.53333333333333) internal successors, (2753), 15 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:41:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 28901 transitions. [2023-12-25 17:41:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2755 [2023-12-25 17:41:36,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:41:36,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:41:36,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 17:41:36,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-25 17:41:36,761 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:41:36,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:41:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -969455835, now seen corresponding path program 1 times [2023-12-25 17:41:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:41:36,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934325184] [2023-12-25 17:41:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:41:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:41:36,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:41:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171681701] [2023-12-25 17:41:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:41:36,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:41:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:41:36,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:41:36,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 17:41:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:41:39,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 11438 conjuncts, 296 conjunts are in the unsatisfiable core [2023-12-25 17:41:39,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:41:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:41:47,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:42:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:42:09,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:42:09,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934325184] [2023-12-25 17:42:09,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:42:09,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171681701] [2023-12-25 17:42:09,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171681701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:42:09,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:42:09,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 96] total 199 [2023-12-25 17:42:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755498312] [2023-12-25 17:42:09,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:42:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2023-12-25 17:42:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:42:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2023-12-25 17:42:09,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=38578, Unknown=0, NotChecked=0, Total=39402 [2023-12-25 17:42:09,257 INFO L87 Difference]: Start difference. First operand 17376 states and 28901 transitions. Second operand has 199 states, 199 states have (on average 27.64321608040201) internal successors, (5501), 199 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:46:38,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-25 17:46:38,446 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-25 17:46:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 750 states. [2023-12-25 17:46:38,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6249 GetRequests, 5309 SyntacticMatches, 0 SemanticMatches, 939 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283443 ImplicationChecksByTransitivity, 187.2s TimeCoverageRelationStatistics Valid=77534, Invalid=807006, Unknown=0, NotChecked=0, Total=884540 [2023-12-25 17:46:38,480 INFO L413 NwaCegarLoop]: 3620 mSDtfsCounter, 103306 mSDsluCounter, 539303 mSDsCounter, 0 mSdLazyCounter, 196676 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103306 SdHoareTripleChecker+Valid, 542923 SdHoareTripleChecker+Invalid, 196781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.3s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 196676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:46:38,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103306 Valid, 542923 Invalid, 196781 Unknown, 0 Unchecked, 1.3s Time], IncrementalHoareTripleChecker [105 Valid, 196676 Invalid, 0 Unknown, 0 Unchecked, 86.6s Time] [2023-12-25 17:46:38,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-25 17:46:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:46:38,705 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2023-12-25 17:46:38,708 INFO L158 Benchmark]: Toolchain (without parser) took 650179.44ms. Allocated memory was 160.4MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 96.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-25 17:46:38,708 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 160.4MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 17:46:38,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 995.70ms. Allocated memory was 160.4MB in the beginning and 234.9MB in the end (delta: 74.4MB). Free memory was 96.0MB in the beginning and 146.1MB in the end (delta: -50.1MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. [2023-12-25 17:46:38,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 1246.46ms. Allocated memory was 234.9MB in the beginning and 887.1MB in the end (delta: 652.2MB). Free memory was 146.1MB in the beginning and 620.0MB in the end (delta: -474.0MB). Peak memory consumption was 238.0MB. Max. memory is 8.0GB. [2023-12-25 17:46:38,708 INFO L158 Benchmark]: Boogie Preprocessor took 1621.43ms. Allocated memory is still 887.1MB. Free memory was 620.0MB in the beginning and 509.9MB in the end (delta: 110.1MB). Peak memory consumption was 125.8MB. Max. memory is 8.0GB. [2023-12-25 17:46:38,709 INFO L158 Benchmark]: RCFGBuilder took 7078.03ms. Allocated memory was 887.1MB in the beginning and 3.0GB in the end (delta: 2.1GB). Free memory was 509.9MB in the beginning and 2.3GB in the end (delta: -1.8GB). Peak memory consumption was 394.8MB. Max. memory is 8.0GB. [2023-12-25 17:46:38,709 INFO L158 Benchmark]: TraceAbstraction took 639231.72ms. Allocated memory was 3.0GB in the beginning and 3.5GB in the end (delta: 498.1MB). Free memory was 2.3GB in the beginning and 1.7GB in the end (delta: 633.3MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-25 17:46:38,710 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 160.4MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 995.70ms. Allocated memory was 160.4MB in the beginning and 234.9MB in the end (delta: 74.4MB). Free memory was 96.0MB in the beginning and 146.1MB in the end (delta: -50.1MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 1246.46ms. Allocated memory was 234.9MB in the beginning and 887.1MB in the end (delta: 652.2MB). Free memory was 146.1MB in the beginning and 620.0MB in the end (delta: -474.0MB). Peak memory consumption was 238.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 1621.43ms. Allocated memory is still 887.1MB. Free memory was 620.0MB in the beginning and 509.9MB in the end (delta: 110.1MB). Peak memory consumption was 125.8MB. Max. memory is 8.0GB. * RCFGBuilder took 7078.03ms. Allocated memory was 887.1MB in the beginning and 3.0GB in the end (delta: 2.1GB). Free memory was 509.9MB in the beginning and 2.3GB in the end (delta: -1.8GB). Peak memory consumption was 394.8MB. Max. memory is 8.0GB. * TraceAbstraction took 639231.72ms. Allocated memory was 3.0GB in the beginning and 3.5GB in the end (delta: 498.1MB). Free memory was 2.3GB in the beginning and 1.7GB in the end (delta: 633.3MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...