/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-85.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:13:17,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:13:17,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:13:17,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:13:17,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:13:17,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:13:17,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:13:17,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:13:17,203 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:13:17,206 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:13:17,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:13:17,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:13:17,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:13:17,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:13:17,208 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:13:17,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:13:17,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:13:17,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:13:17,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:13:17,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:13:17,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:13:17,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:13:17,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:13:17,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:13:17,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:13:17,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:13:17,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:13:17,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:13:17,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:13:17,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:13:17,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:13:17,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:13:17,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:13:17,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:13:17,213 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:13:17,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:13:17,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:13:17,213 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:13:17,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:13:17,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:13:17,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:13:17,457 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:13:17,460 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:13:17,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-85.i [2023-12-21 01:13:18,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:13:18,810 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:13:18,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-85.i [2023-12-21 01:13:18,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04651c147/6e508287c95246fe98985976d03394b2/FLAG112b89f1e [2023-12-21 01:13:18,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04651c147/6e508287c95246fe98985976d03394b2 [2023-12-21 01:13:18,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:13:18,846 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:13:18,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:13:18,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:13:18,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:13:18,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:13:18" (1/1) ... [2023-12-21 01:13:18,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae58448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:18, skipping insertion in model container [2023-12-21 01:13:18,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:13:18" (1/1) ... [2023-12-21 01:13:18,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:13:19,034 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-85.i[916,929] [2023-12-21 01:13:19,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:13:19,250 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:13:19,258 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-85.i[916,929] [2023-12-21 01:13:19,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:13:19,364 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:13:19,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19 WrapperNode [2023-12-21 01:13:19,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:13:19,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:13:19,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:13:19,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:13:19,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,466 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 650 [2023-12-21 01:13:19,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:13:19,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:13:19,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:13:19,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:13:19,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,495 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,580 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]. [2023-12-21 01:13:19,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:13:19,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:13:19,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:13:19,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:13:19,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (1/1) ... [2023-12-21 01:13:19,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:13:19,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:19,678 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) [2023-12-21 01:13:19,714 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 [2023-12-21 01:13:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:13:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:13:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:13:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:13:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:13:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:13:19,850 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:13:19,853 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:13:20,594 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:13:20,618 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:13:20,618 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:13:20,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:13:20 BoogieIcfgContainer [2023-12-21 01:13:20,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:13:20,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:13:20,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:13:20,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:13:20,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:13:18" (1/3) ... [2023-12-21 01:13:20,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15781596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:13:20, skipping insertion in model container [2023-12-21 01:13:20,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:19" (2/3) ... [2023-12-21 01:13:20,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15781596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:13:20, skipping insertion in model container [2023-12-21 01:13:20,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:13:20" (3/3) ... [2023-12-21 01:13:20,661 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-85.i [2023-12-21 01:13:20,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:13:20,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:13:20,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:13:20,725 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;@58baec79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:13:20,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:13:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 165 states have (on average 1.5757575757575757) internal successors, (260), 166 states have internal predecessors, (260), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 01:13:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-21 01:13:20,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:20,756 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:20,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:20,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:20,760 INFO L85 PathProgramCache]: Analyzing trace with hash -793420994, now seen corresponding path program 1 times [2023-12-21 01:13:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:20,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853951262] [2023-12-21 01:13:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:21,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853951262] [2023-12-21 01:13:21,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 01:13:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040848479] [2023-12-21 01:13:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:21,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:21,060 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) [2023-12-21 01:13:21,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:13:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:21,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 01:13:21,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2023-12-21 01:13:21,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:21,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040848479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:21,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:21,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:13:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100205630] [2023-12-21 01:13:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:21,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:13:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:13:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:13:21,511 INFO L87 Difference]: Start difference. First operand has 233 states, 165 states have (on average 1.5757575757575757) internal successors, (260), 166 states have internal predecessors, (260), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-21 01:13:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:21,621 INFO L93 Difference]: Finished difference Result 463 states and 843 transitions. [2023-12-21 01:13:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:13:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 442 [2023-12-21 01:13:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:21,636 INFO L225 Difference]: With dead ends: 463 [2023-12-21 01:13:21,637 INFO L226 Difference]: Without dead ends: 231 [2023-12-21 01:13:21,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:13:21,647 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:21,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:13:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-21 01:13:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-12-21 01:13:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 164 states have (on average 1.5548780487804879) internal successors, (255), 164 states have internal predecessors, (255), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 01:13:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 385 transitions. [2023-12-21 01:13:21,718 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 385 transitions. Word has length 442 [2023-12-21 01:13:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:21,720 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 385 transitions. [2023-12-21 01:13:21,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-21 01:13:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 385 transitions. [2023-12-21 01:13:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-21 01:13:21,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:21,732 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:21,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:21,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 01:13:21,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:21,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1180707264, now seen corresponding path program 1 times [2023-12-21 01:13:21,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:21,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099853051] [2023-12-21 01:13:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:22,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275566029] [2023-12-21 01:13:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:22,089 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) [2023-12-21 01:13:22,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:13:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:22,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 01:13:22,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:22,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099853051] [2023-12-21 01:13:22,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275566029] [2023-12-21 01:13:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275566029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:13:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621573448] [2023-12-21 01:13:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:22,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:13:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:13:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:13:22,584 INFO L87 Difference]: Start difference. First operand 231 states and 385 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:26,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 01:13:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:26,693 INFO L93 Difference]: Finished difference Result 477 states and 792 transitions. [2023-12-21 01:13:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:13:26,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 442 [2023-12-21 01:13:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:26,697 INFO L225 Difference]: With dead ends: 477 [2023-12-21 01:13:26,697 INFO L226 Difference]: Without dead ends: 247 [2023-12-21 01:13:26,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:13:26,698 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 30 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:26,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1141 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 01:13:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-21 01:13:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 233. [2023-12-21 01:13:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 166 states have (on average 1.5481927710843373) internal successors, (257), 166 states have internal predecessors, (257), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 01:13:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 387 transitions. [2023-12-21 01:13:26,715 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 387 transitions. Word has length 442 [2023-12-21 01:13:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 387 transitions. [2023-12-21 01:13:26,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 387 transitions. [2023-12-21 01:13:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-21 01:13:26,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:26,745 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:26,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:26,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 01:13:26,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:26,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1123448962, now seen corresponding path program 1 times [2023-12-21 01:13:26,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:26,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158617733] [2023-12-21 01:13:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:27,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118548555] [2023-12-21 01:13:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:27,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:27,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:27,009 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) [2023-12-21 01:13:27,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:13:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:27,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:13:27,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:27,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:27,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158617733] [2023-12-21 01:13:27,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118548555] [2023-12-21 01:13:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118548555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:27,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:27,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:13:27,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522799777] [2023-12-21 01:13:27,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:27,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:13:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:13:27,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:27,328 INFO L87 Difference]: Start difference. First operand 233 states and 387 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:27,418 INFO L93 Difference]: Finished difference Result 692 states and 1149 transitions. [2023-12-21 01:13:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:13:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 442 [2023-12-21 01:13:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:27,422 INFO L225 Difference]: With dead ends: 692 [2023-12-21 01:13:27,422 INFO L226 Difference]: Without dead ends: 460 [2023-12-21 01:13:27,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:27,423 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 365 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:27,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 734 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:13:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-21 01:13:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2023-12-21 01:13:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 325 states have (on average 1.5261538461538462) internal successors, (496), 325 states have internal predecessors, (496), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 756 transitions. [2023-12-21 01:13:27,458 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 756 transitions. Word has length 442 [2023-12-21 01:13:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:27,458 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 756 transitions. [2023-12-21 01:13:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 756 transitions. [2023-12-21 01:13:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-21 01:13:27,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:27,462 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:27,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:27,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:27,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:27,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1138967680, now seen corresponding path program 1 times [2023-12-21 01:13:27,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:27,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67845020] [2023-12-21 01:13:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:27,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:27,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450214436] [2023-12-21 01:13:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:27,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:27,750 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) [2023-12-21 01:13:27,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:13:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:28,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:13:28,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:28,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67845020] [2023-12-21 01:13:28,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450214436] [2023-12-21 01:13:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450214436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:28,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:28,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:13:28,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479058935] [2023-12-21 01:13:28,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:28,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:13:28,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:28,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:13:28,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:28,118 INFO L87 Difference]: Start difference. First operand 458 states and 756 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:28,207 INFO L93 Difference]: Finished difference Result 918 states and 1514 transitions. [2023-12-21 01:13:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:13:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 442 [2023-12-21 01:13:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:28,210 INFO L225 Difference]: With dead ends: 918 [2023-12-21 01:13:28,210 INFO L226 Difference]: Without dead ends: 461 [2023-12-21 01:13:28,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:28,212 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 364 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:28,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1004 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:13:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-21 01:13:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 459. [2023-12-21 01:13:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 326 states have (on average 1.50920245398773) internal successors, (492), 326 states have internal predecessors, (492), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 752 transitions. [2023-12-21 01:13:28,242 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 752 transitions. Word has length 442 [2023-12-21 01:13:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:28,243 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 752 transitions. [2023-12-21 01:13:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 752 transitions. [2023-12-21 01:13:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-21 01:13:28,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:28,246 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:28,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:28,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:28,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1763425568, now seen corresponding path program 1 times [2023-12-21 01:13:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:28,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091561525] [2023-12-21 01:13:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:28,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841186088] [2023-12-21 01:13:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:28,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:28,499 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) [2023-12-21 01:13:28,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:13:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:28,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:13:28,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:28,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:28,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091561525] [2023-12-21 01:13:28,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841186088] [2023-12-21 01:13:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841186088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:28,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:28,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:13:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198057870] [2023-12-21 01:13:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:13:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:13:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:28,821 INFO L87 Difference]: Start difference. First operand 459 states and 752 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:28,990 INFO L93 Difference]: Finished difference Result 1355 states and 2222 transitions. [2023-12-21 01:13:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:13:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 443 [2023-12-21 01:13:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:28,995 INFO L225 Difference]: With dead ends: 1355 [2023-12-21 01:13:28,995 INFO L226 Difference]: Without dead ends: 897 [2023-12-21 01:13:28,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:28,996 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 351 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:28,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 954 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:13:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-21 01:13:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 498. [2023-12-21 01:13:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 365 states have (on average 1.5041095890410958) internal successors, (549), 365 states have internal predecessors, (549), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 809 transitions. [2023-12-21 01:13:29,027 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 809 transitions. Word has length 443 [2023-12-21 01:13:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:29,028 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 809 transitions. [2023-12-21 01:13:29,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 809 transitions. [2023-12-21 01:13:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-21 01:13:29,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:29,031 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:29,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:29,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:29,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 866032290, now seen corresponding path program 1 times [2023-12-21 01:13:29,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:29,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84125195] [2023-12-21 01:13:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:29,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:29,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164135219] [2023-12-21 01:13:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:29,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:29,304 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) [2023-12-21 01:13:29,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:13:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:29,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:13:29,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:29,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:29,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84125195] [2023-12-21 01:13:29,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164135219] [2023-12-21 01:13:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164135219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:29,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:13:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185395162] [2023-12-21 01:13:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:29,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:13:29,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:29,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:13:29,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:29,635 INFO L87 Difference]: Start difference. First operand 498 states and 809 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:29,729 INFO L93 Difference]: Finished difference Result 1472 states and 2391 transitions. [2023-12-21 01:13:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:13:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 443 [2023-12-21 01:13:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:29,733 INFO L225 Difference]: With dead ends: 1472 [2023-12-21 01:13:29,733 INFO L226 Difference]: Without dead ends: 975 [2023-12-21 01:13:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:13:29,736 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 361 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1091 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:13:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-21 01:13:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 524. [2023-12-21 01:13:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 391 states have (on average 1.5063938618925832) internal successors, (589), 391 states have internal predecessors, (589), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 849 transitions. [2023-12-21 01:13:29,772 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 849 transitions. Word has length 443 [2023-12-21 01:13:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:29,772 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 849 transitions. [2023-12-21 01:13:29,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 849 transitions. [2023-12-21 01:13:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-21 01:13:29,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:29,775 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:29,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:29,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:29,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:29,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:29,983 INFO L85 PathProgramCache]: Analyzing trace with hash 471665504, now seen corresponding path program 1 times [2023-12-21 01:13:29,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:29,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535309142] [2023-12-21 01:13:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:30,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:30,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400323851] [2023-12-21 01:13:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:30,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:30,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:30,076 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) [2023-12-21 01:13:30,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:13:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:30,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 01:13:30,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:30,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:30,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535309142] [2023-12-21 01:13:30,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400323851] [2023-12-21 01:13:30,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400323851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:30,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:30,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:13:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135874865] [2023-12-21 01:13:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:30,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:13:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:13:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:13:30,437 INFO L87 Difference]: Start difference. First operand 524 states and 849 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:30,581 INFO L93 Difference]: Finished difference Result 1049 states and 1698 transitions. [2023-12-21 01:13:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:13:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 443 [2023-12-21 01:13:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:30,585 INFO L225 Difference]: With dead ends: 1049 [2023-12-21 01:13:30,585 INFO L226 Difference]: Without dead ends: 526 [2023-12-21 01:13:30,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:13:30,586 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 472 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:30,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1175 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:13:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-21 01:13:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 524. [2023-12-21 01:13:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 391 states have (on average 1.5012787723785166) internal successors, (587), 391 states have internal predecessors, (587), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 847 transitions. [2023-12-21 01:13:30,615 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 847 transitions. Word has length 443 [2023-12-21 01:13:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:30,616 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 847 transitions. [2023-12-21 01:13:30,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 847 transitions. [2023-12-21 01:13:30,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-21 01:13:30,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:30,618 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:30,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:30,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:30,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:30,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496542, now seen corresponding path program 1 times [2023-12-21 01:13:30,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:30,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103326241] [2023-12-21 01:13:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:30,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:30,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296685972] [2023-12-21 01:13:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:30,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:30,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:30,869 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) [2023-12-21 01:13:30,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 01:13:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:31,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 01:13:31,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:31,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:31,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:31,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103326241] [2023-12-21 01:13:31,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:31,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296685972] [2023-12-21 01:13:31,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296685972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:31,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:31,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:13:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756886561] [2023-12-21 01:13:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:31,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:13:31,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:13:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:13:31,585 INFO L87 Difference]: Start difference. First operand 524 states and 847 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:32,132 INFO L93 Difference]: Finished difference Result 2236 states and 3643 transitions. [2023-12-21 01:13:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:13:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 443 [2023-12-21 01:13:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:32,139 INFO L225 Difference]: With dead ends: 2236 [2023-12-21 01:13:32,139 INFO L226 Difference]: Without dead ends: 1713 [2023-12-21 01:13:32,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:13:32,141 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1366 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:32,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 1999 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:13:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2023-12-21 01:13:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 634. [2023-12-21 01:13:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 435 states have (on average 1.452873563218391) internal successors, (632), 435 states have internal predecessors, (632), 195 states have call successors, (195), 3 states have call predecessors, (195), 3 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2023-12-21 01:13:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1022 transitions. [2023-12-21 01:13:32,190 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1022 transitions. Word has length 443 [2023-12-21 01:13:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:32,191 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 1022 transitions. [2023-12-21 01:13:32,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1022 transitions. [2023-12-21 01:13:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-21 01:13:32,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:32,193 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:32,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 01:13:32,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 01:13:32,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:32,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1455663456, now seen corresponding path program 1 times [2023-12-21 01:13:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:32,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049277154] [2023-12-21 01:13:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:32,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312482755] [2023-12-21 01:13:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:32,457 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) [2023-12-21 01:13:32,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 01:13:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:32,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 01:13:32,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3574 proven. 57 refuted. 0 times theorem prover too weak. 4689 trivial. 0 not checked. [2023-12-21 01:13:33,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 135 proven. 57 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049277154] [2023-12-21 01:13:33,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312482755] [2023-12-21 01:13:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312482755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:33,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-21 01:13:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376458782] [2023-12-21 01:13:33,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:33,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 01:13:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:33,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 01:13:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:13:33,609 INFO L87 Difference]: Start difference. First operand 634 states and 1022 transitions. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:13:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:34,760 INFO L93 Difference]: Finished difference Result 1937 states and 3114 transitions. [2023-12-21 01:13:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:13:34,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 443 [2023-12-21 01:13:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:34,766 INFO L225 Difference]: With dead ends: 1937 [2023-12-21 01:13:34,766 INFO L226 Difference]: Without dead ends: 1414 [2023-12-21 01:13:34,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:13:34,768 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1550 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:34,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 1997 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 01:13:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2023-12-21 01:13:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1248. [2023-12-21 01:13:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 914 states have (on average 1.4824945295404814) internal successors, (1355), 914 states have internal predecessors, (1355), 325 states have call successors, (325), 8 states have call predecessors, (325), 8 states have return successors, (325), 325 states have call predecessors, (325), 325 states have call successors, (325) [2023-12-21 01:13:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2005 transitions. [2023-12-21 01:13:34,866 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2005 transitions. Word has length 443 [2023-12-21 01:13:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:34,866 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 2005 transitions. [2023-12-21 01:13:34,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:13:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2005 transitions. [2023-12-21 01:13:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-21 01:13:34,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:34,869 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:34,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:35,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:35,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1327437404, now seen corresponding path program 1 times [2023-12-21 01:13:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942043588] [2023-12-21 01:13:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:35,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:35,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610084415] [2023-12-21 01:13:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:35,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:35,119 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) [2023-12-21 01:13:35,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 01:13:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:35,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:13:35,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4092 proven. 78 refuted. 0 times theorem prover too weak. 4150 trivial. 0 not checked. [2023-12-21 01:13:35,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 114 proven. 78 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942043588] [2023-12-21 01:13:35,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610084415] [2023-12-21 01:13:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610084415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:35,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:13:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999038509] [2023-12-21 01:13:35,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:35,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:13:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:13:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:13:35,867 INFO L87 Difference]: Start difference. First operand 1248 states and 2005 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-21 01:13:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:36,262 INFO L93 Difference]: Finished difference Result 2421 states and 3865 transitions. [2023-12-21 01:13:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:13:36,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 444 [2023-12-21 01:13:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:36,268 INFO L225 Difference]: With dead ends: 2421 [2023-12-21 01:13:36,268 INFO L226 Difference]: Without dead ends: 1288 [2023-12-21 01:13:36,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 880 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:13:36,271 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 267 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:36,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 774 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:13:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-21 01:13:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1268. [2023-12-21 01:13:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 929 states have (on average 1.463939720129171) internal successors, (1360), 929 states have internal predecessors, (1360), 325 states have call successors, (325), 13 states have call predecessors, (325), 13 states have return successors, (325), 325 states have call predecessors, (325), 325 states have call successors, (325) [2023-12-21 01:13:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 2010 transitions. [2023-12-21 01:13:36,369 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 2010 transitions. Word has length 444 [2023-12-21 01:13:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:36,370 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 2010 transitions. [2023-12-21 01:13:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-21 01:13:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 2010 transitions. [2023-12-21 01:13:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 01:13:36,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:36,373 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:36,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:36,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 01:13:36,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:36,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash 492565572, now seen corresponding path program 1 times [2023-12-21 01:13:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625170968] [2023-12-21 01:13:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:36,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:36,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902284290] [2023-12-21 01:13:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:36,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:36,642 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) [2023-12-21 01:13:36,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 01:13:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:36,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:13:36,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 918 proven. 9 refuted. 0 times theorem prover too weak. 7393 trivial. 0 not checked. [2023-12-21 01:13:37,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 183 proven. 9 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:37,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:37,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625170968] [2023-12-21 01:13:37,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:37,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902284290] [2023-12-21 01:13:37,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902284290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:37,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:37,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-21 01:13:37,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372621306] [2023-12-21 01:13:37,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:37,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:13:37,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:37,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:13:37,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:13:37,232 INFO L87 Difference]: Start difference. First operand 1268 states and 2010 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-21 01:13:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:37,927 INFO L93 Difference]: Finished difference Result 1898 states and 2988 transitions. [2023-12-21 01:13:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:13:37,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 445 [2023-12-21 01:13:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:37,931 INFO L225 Difference]: With dead ends: 1898 [2023-12-21 01:13:37,931 INFO L226 Difference]: Without dead ends: 749 [2023-12-21 01:13:37,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 881 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-21 01:13:37,934 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 513 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:37,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1200 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:13:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-21 01:13:37,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 704. [2023-12-21 01:13:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 497 states have (on average 1.4104627766599598) internal successors, (701), 497 states have internal predecessors, (701), 195 states have call successors, (195), 11 states have call predecessors, (195), 11 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2023-12-21 01:13:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1091 transitions. [2023-12-21 01:13:37,988 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1091 transitions. Word has length 445 [2023-12-21 01:13:37,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:37,989 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 1091 transitions. [2023-12-21 01:13:37,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-21 01:13:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1091 transitions. [2023-12-21 01:13:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 01:13:37,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:37,992 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:38,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:38,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 01:13:38,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:38,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2071580352, now seen corresponding path program 1 times [2023-12-21 01:13:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971333440] [2023-12-21 01:13:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:38,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:38,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103783307] [2023-12-21 01:13:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:38,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:38,270 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) [2023-12-21 01:13:38,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 01:13:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:38,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 01:13:38,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4092 proven. 78 refuted. 0 times theorem prover too weak. 4150 trivial. 0 not checked. [2023-12-21 01:13:39,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 114 proven. 78 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971333440] [2023-12-21 01:13:39,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103783307] [2023-12-21 01:13:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103783307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:39,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:39,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 01:13:39,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738822718] [2023-12-21 01:13:39,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:39,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:13:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:13:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:13:39,737 INFO L87 Difference]: Start difference. First operand 704 states and 1091 transitions. Second operand has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:13:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:40,320 INFO L93 Difference]: Finished difference Result 1263 states and 1960 transitions. [2023-12-21 01:13:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:13:40,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 445 [2023-12-21 01:13:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:40,325 INFO L225 Difference]: With dead ends: 1263 [2023-12-21 01:13:40,325 INFO L226 Difference]: Without dead ends: 682 [2023-12-21 01:13:40,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 878 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:13:40,327 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 831 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:40,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 683 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:13:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-12-21 01:13:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 542. [2023-12-21 01:13:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 404 states have (on average 1.4455445544554455) internal successors, (584), 404 states have internal predecessors, (584), 130 states have call successors, (130), 7 states have call predecessors, (130), 7 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 844 transitions. [2023-12-21 01:13:40,368 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 844 transitions. Word has length 445 [2023-12-21 01:13:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:40,368 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 844 transitions. [2023-12-21 01:13:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:13:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 844 transitions. [2023-12-21 01:13:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 01:13:40,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:40,371 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:40,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:40,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 01:13:40,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:40,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2032567738, now seen corresponding path program 1 times [2023-12-21 01:13:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213851440] [2023-12-21 01:13:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:40,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:40,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253383684] [2023-12-21 01:13:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:40,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:40,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:40,633 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) [2023-12-21 01:13:40,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 01:13:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:40,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:13:40,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4092 proven. 78 refuted. 0 times theorem prover too weak. 4150 trivial. 0 not checked. [2023-12-21 01:13:41,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 114 proven. 78 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:42,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213851440] [2023-12-21 01:13:42,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253383684] [2023-12-21 01:13:42,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253383684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:42,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:42,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-21 01:13:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684995269] [2023-12-21 01:13:42,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:42,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 01:13:42,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 01:13:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:13:42,016 INFO L87 Difference]: Start difference. First operand 542 states and 844 transitions. Second operand has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:13:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:42,642 INFO L93 Difference]: Finished difference Result 1095 states and 1699 transitions. [2023-12-21 01:13:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:13:42,643 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 445 [2023-12-21 01:13:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:42,645 INFO L225 Difference]: With dead ends: 1095 [2023-12-21 01:13:42,645 INFO L226 Difference]: Without dead ends: 554 [2023-12-21 01:13:42,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 877 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-12-21 01:13:42,647 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 917 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:42,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 881 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:13:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-21 01:13:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 542. [2023-12-21 01:13:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 404 states have (on average 1.4356435643564356) internal successors, (580), 404 states have internal predecessors, (580), 130 states have call successors, (130), 7 states have call predecessors, (130), 7 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 840 transitions. [2023-12-21 01:13:42,684 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 840 transitions. Word has length 445 [2023-12-21 01:13:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:42,685 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 840 transitions. [2023-12-21 01:13:42,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:13:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 840 transitions. [2023-12-21 01:13:42,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 01:13:42,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:42,687 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:42,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:42,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 01:13:42,893 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:42,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:42,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1822498882, now seen corresponding path program 1 times [2023-12-21 01:13:42,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:42,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754993765] [2023-12-21 01:13:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:42,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:42,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:42,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187450681] [2023-12-21 01:13:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:42,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:42,978 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) [2023-12-21 01:13:43,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 01:13:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:43,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:13:43,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4304 proven. 159 refuted. 0 times theorem prover too weak. 3857 trivial. 0 not checked. [2023-12-21 01:13:44,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 219 proven. 162 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2023-12-21 01:13:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754993765] [2023-12-21 01:13:44,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187450681] [2023-12-21 01:13:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187450681] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:44,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-21 01:13:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100476877] [2023-12-21 01:13:44,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 01:13:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 01:13:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:13:44,870 INFO L87 Difference]: Start difference. First operand 542 states and 840 transitions. Second operand has 20 states, 20 states have (on average 10.9) internal successors, (218), 20 states have internal predecessors, (218), 6 states have call successors, (130), 4 states have call predecessors, (130), 8 states have return successors, (130), 6 states have call predecessors, (130), 6 states have call successors, (130) [2023-12-21 01:13:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:46,870 INFO L93 Difference]: Finished difference Result 1645 states and 2524 transitions. [2023-12-21 01:13:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 01:13:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.9) internal successors, (218), 20 states have internal predecessors, (218), 6 states have call successors, (130), 4 states have call predecessors, (130), 8 states have return successors, (130), 6 states have call predecessors, (130), 6 states have call successors, (130) Word has length 446 [2023-12-21 01:13:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:46,875 INFO L225 Difference]: With dead ends: 1645 [2023-12-21 01:13:46,875 INFO L226 Difference]: Without dead ends: 1104 [2023-12-21 01:13:46,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 875 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 01:13:46,878 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1761 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:46,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 2898 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 01:13:46,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2023-12-21 01:13:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 558. [2023-12-21 01:13:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 418 states have (on average 1.4066985645933014) internal successors, (588), 418 states have internal predecessors, (588), 130 states have call successors, (130), 9 states have call predecessors, (130), 9 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 848 transitions. [2023-12-21 01:13:46,932 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 848 transitions. Word has length 446 [2023-12-21 01:13:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:46,932 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 848 transitions. [2023-12-21 01:13:46,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.9) internal successors, (218), 20 states have internal predecessors, (218), 6 states have call successors, (130), 4 states have call predecessors, (130), 8 states have return successors, (130), 6 states have call predecessors, (130), 6 states have call successors, (130) [2023-12-21 01:13:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 848 transitions. [2023-12-21 01:13:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 01:13:46,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:46,935 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:46,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:47,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:47,144 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:47,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2070645376, now seen corresponding path program 1 times [2023-12-21 01:13:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:47,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546209318] [2023-12-21 01:13:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:47,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:47,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313292177] [2023-12-21 01:13:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:47,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:47,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:47,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:13:47,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 01:13:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:47,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:13:47,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:13:47,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:13:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546209318] [2023-12-21 01:13:47,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313292177] [2023-12-21 01:13:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313292177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:13:47,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:13:47,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:13:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770398799] [2023-12-21 01:13:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:13:47,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:13:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:13:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:13:47,971 INFO L87 Difference]: Start difference. First operand 558 states and 848 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:48,281 INFO L93 Difference]: Finished difference Result 1033 states and 1566 transitions. [2023-12-21 01:13:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:13:48,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 446 [2023-12-21 01:13:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:48,283 INFO L225 Difference]: With dead ends: 1033 [2023-12-21 01:13:48,283 INFO L226 Difference]: Without dead ends: 476 [2023-12-21 01:13:48,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:13:48,286 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 541 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:48,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 475 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:13:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-21 01:13:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2023-12-21 01:13:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 336 states have (on average 1.3601190476190477) internal successors, (457), 336 states have internal predecessors, (457), 130 states have call successors, (130), 9 states have call predecessors, (130), 9 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 717 transitions. [2023-12-21 01:13:48,329 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 717 transitions. Word has length 446 [2023-12-21 01:13:48,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:48,329 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 717 transitions. [2023-12-21 01:13:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:13:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 717 transitions. [2023-12-21 01:13:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-21 01:13:48,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:48,337 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:48,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 01:13:48,545 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1194044405, now seen corresponding path program 1 times [2023-12-21 01:13:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202994659] [2023-12-21 01:13:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:48,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:48,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358737050] [2023-12-21 01:13:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:48,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:48,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:48,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:13:48,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 01:13:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:48,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:13:48,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2584 proven. 156 refuted. 0 times theorem prover too weak. 5580 trivial. 0 not checked. [2023-12-21 01:13:49,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 36 proven. 156 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202994659] [2023-12-21 01:13:49,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358737050] [2023-12-21 01:13:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358737050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:49,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 01:13:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598506145] [2023-12-21 01:13:49,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:49,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:13:49,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:13:49,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:13:49,513 INFO L87 Difference]: Start difference. First operand 476 states and 717 transitions. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-21 01:13:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:49,944 INFO L93 Difference]: Finished difference Result 795 states and 1187 transitions. [2023-12-21 01:13:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:13:49,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 447 [2023-12-21 01:13:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:49,957 INFO L225 Difference]: With dead ends: 795 [2023-12-21 01:13:49,957 INFO L226 Difference]: Without dead ends: 500 [2023-12-21 01:13:49,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:13:49,959 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 233 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:49,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1070 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:13:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-21 01:13:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 484. [2023-12-21 01:13:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 342 states have (on average 1.347953216374269) internal successors, (461), 342 states have internal predecessors, (461), 130 states have call successors, (130), 11 states have call predecessors, (130), 11 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-21 01:13:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 721 transitions. [2023-12-21 01:13:50,005 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 721 transitions. Word has length 447 [2023-12-21 01:13:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:50,006 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 721 transitions. [2023-12-21 01:13:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-21 01:13:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 721 transitions. [2023-12-21 01:13:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 01:13:50,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:50,008 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:50,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:50,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 01:13:50,218 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:50,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash 644529442, now seen corresponding path program 1 times [2023-12-21 01:13:50,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:50,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411862083] [2023-12-21 01:13:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:50,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:50,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:50,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706649827] [2023-12-21 01:13:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:50,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:50,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:50,266 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:13:50,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 01:13:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:50,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 01:13:50,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2539 proven. 318 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2023-12-21 01:13:51,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 36 proven. 156 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411862083] [2023-12-21 01:13:53,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:53,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706649827] [2023-12-21 01:13:53,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706649827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:53,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:53,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-12-21 01:13:53,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496961813] [2023-12-21 01:13:53,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:53,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 01:13:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 01:13:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:13:53,119 INFO L87 Difference]: Start difference. First operand 484 states and 721 transitions. Second operand has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 4 states have call successors, (120), 3 states have call predecessors, (120), 6 states have return successors, (121), 4 states have call predecessors, (121), 4 states have call successors, (121) [2023-12-21 01:13:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:54,330 INFO L93 Difference]: Finished difference Result 969 states and 1424 transitions. [2023-12-21 01:13:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 01:13:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 4 states have call successors, (120), 3 states have call predecessors, (120), 6 states have return successors, (121), 4 states have call predecessors, (121), 4 states have call successors, (121) Word has length 448 [2023-12-21 01:13:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:54,333 INFO L225 Difference]: With dead ends: 969 [2023-12-21 01:13:54,334 INFO L226 Difference]: Without dead ends: 696 [2023-12-21 01:13:54,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 01:13:54,335 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 885 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:54,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1527 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 01:13:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-21 01:13:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 613. [2023-12-21 01:13:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 457 states have (on average 1.3676148796498906) internal successors, (625), 458 states have internal predecessors, (625), 138 states have call successors, (138), 17 states have call predecessors, (138), 17 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-21 01:13:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 901 transitions. [2023-12-21 01:13:54,431 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 901 transitions. Word has length 448 [2023-12-21 01:13:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:54,433 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 901 transitions. [2023-12-21 01:13:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 4 states have call successors, (120), 3 states have call predecessors, (120), 6 states have return successors, (121), 4 states have call predecessors, (121), 4 states have call successors, (121) [2023-12-21 01:13:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 901 transitions. [2023-12-21 01:13:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 01:13:54,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:54,435 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:54,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:54,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 01:13:54,647 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:54,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1346129316, now seen corresponding path program 1 times [2023-12-21 01:13:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851770467] [2023-12-21 01:13:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:54,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:54,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396065157] [2023-12-21 01:13:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:54,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:54,712 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:13:54,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 01:13:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:13:55,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 01:13:55,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:13:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2992 proven. 459 refuted. 0 times theorem prover too weak. 4869 trivial. 0 not checked. [2023-12-21 01:13:57,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:13:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 36 proven. 156 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:13:57,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:13:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851770467] [2023-12-21 01:13:57,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:13:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396065157] [2023-12-21 01:13:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396065157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:13:57,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:13:57,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2023-12-21 01:13:57,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218296958] [2023-12-21 01:13:57,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:13:57,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 01:13:57,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:13:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 01:13:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-12-21 01:13:57,652 INFO L87 Difference]: Start difference. First operand 613 states and 901 transitions. Second operand has 19 states, 19 states have (on average 13.842105263157896) internal successors, (263), 19 states have internal predecessors, (263), 6 states have call successors, (130), 5 states have call predecessors, (130), 9 states have return successors, (130), 6 states have call predecessors, (130), 6 states have call successors, (130) [2023-12-21 01:13:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:13:59,202 INFO L93 Difference]: Finished difference Result 1380 states and 2012 transitions. [2023-12-21 01:13:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 01:13:59,203 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.842105263157896) internal successors, (263), 19 states have internal predecessors, (263), 6 states have call successors, (130), 5 states have call predecessors, (130), 9 states have return successors, (130), 6 states have call predecessors, (130), 6 states have call successors, (130) Word has length 448 [2023-12-21 01:13:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:13:59,210 INFO L225 Difference]: With dead ends: 1380 [2023-12-21 01:13:59,210 INFO L226 Difference]: Without dead ends: 1034 [2023-12-21 01:13:59,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=312, Invalid=680, Unknown=0, NotChecked=0, Total=992 [2023-12-21 01:13:59,212 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 889 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:13:59,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2226 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 01:13:59,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-21 01:13:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 890. [2023-12-21 01:13:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 660 states have (on average 1.362121212121212) internal successors, (899), 661 states have internal predecessors, (899), 203 states have call successors, (203), 26 states have call predecessors, (203), 26 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-21 01:13:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1305 transitions. [2023-12-21 01:13:59,311 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1305 transitions. Word has length 448 [2023-12-21 01:13:59,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:13:59,311 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1305 transitions. [2023-12-21 01:13:59,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.842105263157896) internal successors, (263), 19 states have internal predecessors, (263), 6 states have call successors, (130), 5 states have call predecessors, (130), 9 states have return successors, (130), 6 states have call predecessors, (130), 6 states have call successors, (130) [2023-12-21 01:13:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1305 transitions. [2023-12-21 01:13:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-21 01:13:59,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:13:59,314 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:13:59,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 01:13:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 01:13:59,523 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:13:59,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:13:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 547723879, now seen corresponding path program 1 times [2023-12-21 01:13:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:13:59,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109597982] [2023-12-21 01:13:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:13:59,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:13:59,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967031494] [2023-12-21 01:13:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:13:59,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:13:59,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:13:59,568 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:13:59,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 01:14:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:14:00,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 01:14:00,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:14:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:14:00,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:14:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:14:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109597982] [2023-12-21 01:14:00,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:14:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967031494] [2023-12-21 01:14:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967031494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:14:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:14:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:14:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358632111] [2023-12-21 01:14:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:14:00,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:14:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:14:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:14:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:14:00,362 INFO L87 Difference]: Start difference. First operand 890 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:14:00,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:14:00,644 INFO L93 Difference]: Finished difference Result 1644 states and 2416 transitions. [2023-12-21 01:14:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:14:00,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 449 [2023-12-21 01:14:00,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:14:00,648 INFO L225 Difference]: With dead ends: 1644 [2023-12-21 01:14:00,648 INFO L226 Difference]: Without dead ends: 906 [2023-12-21 01:14:00,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:14:00,650 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 262 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:14:00,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1034 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:14:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-21 01:14:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 890. [2023-12-21 01:14:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 660 states have (on average 1.3606060606060606) internal successors, (898), 661 states have internal predecessors, (898), 203 states have call successors, (203), 26 states have call predecessors, (203), 26 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-21 01:14:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1304 transitions. [2023-12-21 01:14:00,779 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1304 transitions. Word has length 449 [2023-12-21 01:14:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:14:00,779 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1304 transitions. [2023-12-21 01:14:00,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:14:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1304 transitions. [2023-12-21 01:14:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-21 01:14:00,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:14:00,783 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:14:00,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 01:14:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:00,992 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:14:00,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:14:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1460862637, now seen corresponding path program 1 times [2023-12-21 01:14:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:14:00,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98778050] [2023-12-21 01:14:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:00,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:14:01,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:14:01,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825723954] [2023-12-21 01:14:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:01,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:01,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:14:01,037 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:14:01,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 01:14:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:14:01,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:14:01,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:14:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:14:02,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:14:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:14:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98778050] [2023-12-21 01:14:02,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:14:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825723954] [2023-12-21 01:14:02,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825723954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:14:02,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:14:02,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:14:02,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765496216] [2023-12-21 01:14:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:14:02,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:14:02,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:14:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:14:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:14:02,202 INFO L87 Difference]: Start difference. First operand 890 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:14:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:14:02,480 INFO L93 Difference]: Finished difference Result 1644 states and 2415 transitions. [2023-12-21 01:14:02,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:14:02,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 449 [2023-12-21 01:14:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:14:02,485 INFO L225 Difference]: With dead ends: 1644 [2023-12-21 01:14:02,485 INFO L226 Difference]: Without dead ends: 906 [2023-12-21 01:14:02,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:14:02,487 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 257 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:14:02,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1000 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:14:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-21 01:14:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 890. [2023-12-21 01:14:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 660 states have (on average 1.3590909090909091) internal successors, (897), 661 states have internal predecessors, (897), 203 states have call successors, (203), 26 states have call predecessors, (203), 26 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-21 01:14:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1303 transitions. [2023-12-21 01:14:02,609 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1303 transitions. Word has length 449 [2023-12-21 01:14:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:14:02,611 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1303 transitions. [2023-12-21 01:14:02,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:14:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1303 transitions. [2023-12-21 01:14:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-21 01:14:02,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:14:02,613 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:14:02,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 01:14:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:02,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:14:02,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:14:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash -105895313, now seen corresponding path program 1 times [2023-12-21 01:14:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:14:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867485935] [2023-12-21 01:14:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:14:02,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:14:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287383698] [2023-12-21 01:14:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:02,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:02,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:14:02,865 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:14:02,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 01:14:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:14:03,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:14:03,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:14:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2062 proven. 165 refuted. 0 times theorem prover too weak. 6093 trivial. 0 not checked. [2023-12-21 01:14:04,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:14:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 27 proven. 165 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-21 01:14:04,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:14:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867485935] [2023-12-21 01:14:04,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:14:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287383698] [2023-12-21 01:14:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287383698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:14:04,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:14:04,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-21 01:14:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861585342] [2023-12-21 01:14:04,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:14:04,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 01:14:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:14:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 01:14:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:14:04,683 INFO L87 Difference]: Start difference. First operand 890 states and 1303 transitions. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:14:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:14:06,065 INFO L93 Difference]: Finished difference Result 1878 states and 2747 transitions. [2023-12-21 01:14:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:14:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 449 [2023-12-21 01:14:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:14:06,069 INFO L225 Difference]: With dead ends: 1878 [2023-12-21 01:14:06,069 INFO L226 Difference]: Without dead ends: 1161 [2023-12-21 01:14:06,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:14:06,071 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1221 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:14:06,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 1854 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:14:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-21 01:14:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 890. [2023-12-21 01:14:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 660 states have (on average 1.3575757575757577) internal successors, (896), 661 states have internal predecessors, (896), 203 states have call successors, (203), 26 states have call predecessors, (203), 26 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-21 01:14:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1302 transitions. [2023-12-21 01:14:06,165 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1302 transitions. Word has length 449 [2023-12-21 01:14:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:14:06,166 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1302 transitions. [2023-12-21 01:14:06,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-21 01:14:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1302 transitions. [2023-12-21 01:14:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-21 01:14:06,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:14:06,168 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:14:06,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 01:14:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:06,378 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:14:06,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:14:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -601301897, now seen corresponding path program 1 times [2023-12-21 01:14:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:14:06,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153191671] [2023-12-21 01:14:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:14:06,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:14:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659447106] [2023-12-21 01:14:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:06,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:06,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:14:06,412 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:14:06,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 01:14:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:14:06,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 01:14:06,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:14:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-21 01:14:08,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:14:08,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:14:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153191671] [2023-12-21 01:14:08,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:14:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659447106] [2023-12-21 01:14:08,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659447106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:14:08,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:14:08,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:14:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012209017] [2023-12-21 01:14:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:14:08,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:14:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:14:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:14:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:14:08,397 INFO L87 Difference]: Start difference. First operand 890 states and 1302 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:14:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:14:08,865 INFO L93 Difference]: Finished difference Result 1626 states and 2383 transitions. [2023-12-21 01:14:08,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:14:08,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 450 [2023-12-21 01:14:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:14:08,878 INFO L225 Difference]: With dead ends: 1626 [2023-12-21 01:14:08,878 INFO L226 Difference]: Without dead ends: 906 [2023-12-21 01:14:08,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:14:08,880 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 353 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:14:08,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1230 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:14:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-21 01:14:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 890. [2023-12-21 01:14:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 660 states have (on average 1.356060606060606) internal successors, (895), 661 states have internal predecessors, (895), 203 states have call successors, (203), 26 states have call predecessors, (203), 26 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-21 01:14:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1301 transitions. [2023-12-21 01:14:09,035 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1301 transitions. Word has length 450 [2023-12-21 01:14:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:14:09,035 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1301 transitions. [2023-12-21 01:14:09,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-21 01:14:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1301 transitions. [2023-12-21 01:14:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-21 01:14:09,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:14:09,038 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:14:09,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 01:14:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:09,263 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:14:09,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:14:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1093928071, now seen corresponding path program 1 times [2023-12-21 01:14:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:14:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627178090] [2023-12-21 01:14:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:14:09,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:14:09,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076826397] [2023-12-21 01:14:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:09,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:09,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:14:09,301 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:14:09,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 01:14:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:14:11,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 01:14:11,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:14:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1393 proven. 522 refuted. 0 times theorem prover too weak. 6405 trivial. 0 not checked. [2023-12-21 01:14:15,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:14:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 36 proven. 531 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2023-12-21 01:14:16,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:14:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627178090] [2023-12-21 01:14:16,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:14:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076826397] [2023-12-21 01:14:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076826397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:14:16,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:14:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-21 01:14:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771863134] [2023-12-21 01:14:16,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:14:16,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 01:14:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:14:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 01:14:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:14:16,567 INFO L87 Difference]: Start difference. First operand 890 states and 1301 transitions. Second operand has 24 states, 22 states have (on average 9.545454545454545) internal successors, (210), 22 states have internal predecessors, (210), 8 states have call successors, (130), 5 states have call predecessors, (130), 10 states have return successors, (130), 8 states have call predecessors, (130), 8 states have call successors, (130) [2023-12-21 01:14:20,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:14:20,539 INFO L93 Difference]: Finished difference Result 1974 states and 2862 transitions. [2023-12-21 01:14:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 01:14:20,540 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 9.545454545454545) internal successors, (210), 22 states have internal predecessors, (210), 8 states have call successors, (130), 5 states have call predecessors, (130), 10 states have return successors, (130), 8 states have call predecessors, (130), 8 states have call successors, (130) Word has length 450 [2023-12-21 01:14:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:14:20,543 INFO L225 Difference]: With dead ends: 1974 [2023-12-21 01:14:20,544 INFO L226 Difference]: Without dead ends: 1252 [2023-12-21 01:14:20,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=797, Invalid=1555, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 01:14:20,546 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 2385 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:14:20,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 2551 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 01:14:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-12-21 01:14:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 902. [2023-12-21 01:14:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 669 states have (on average 1.3497757847533631) internal successors, (903), 670 states have internal predecessors, (903), 203 states have call successors, (203), 29 states have call predecessors, (203), 29 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-21 01:14:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1309 transitions. [2023-12-21 01:14:20,700 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1309 transitions. Word has length 450 [2023-12-21 01:14:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:14:20,700 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1309 transitions. [2023-12-21 01:14:20,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 9.545454545454545) internal successors, (210), 22 states have internal predecessors, (210), 8 states have call successors, (130), 5 states have call predecessors, (130), 10 states have return successors, (130), 8 states have call predecessors, (130), 8 states have call successors, (130) [2023-12-21 01:14:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1309 transitions. [2023-12-21 01:14:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-21 01:14:20,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:14:20,702 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:14:20,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 01:14:20,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:20,911 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:14:20,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:14:20,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2061278725, now seen corresponding path program 1 times [2023-12-21 01:14:20,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:14:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699829649] [2023-12-21 01:14:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:14:20,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:14:20,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410686713] [2023-12-21 01:14:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:14:20,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:14:20,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:14:20,951 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:14:20,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 01:14:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:14:36,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 01:14:36,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:14:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5932 proven. 741 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2023-12-21 01:14:40,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:15:07,778 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:15:34,341 WARN L293 SmtUtils]: Spent 12.98s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:15:42,879 WARN L293 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:15:59,526 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:16:13,074 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:16:41,940 WARN L293 SmtUtils]: Spent 17.63s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:16:50,128 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:18:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 627 proven. 825 refuted. 0 times theorem prover too weak. 6868 trivial. 0 not checked. [2023-12-21 01:18:11,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:18:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699829649] [2023-12-21 01:18:11,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:18:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410686713] [2023-12-21 01:18:11,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410686713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:18:11,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:18:11,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34] total 64 [2023-12-21 01:18:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532002065] [2023-12-21 01:18:11,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:18:11,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 01:18:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:18:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 01:18:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=857, Invalid=3165, Unknown=10, NotChecked=0, Total=4032 [2023-12-21 01:18:11,162 INFO L87 Difference]: Start difference. First operand 902 states and 1309 transitions. Second operand has 64 states, 61 states have (on average 5.016393442622951) internal successors, (306), 58 states have internal predecessors, (306), 18 states have call successors, (130), 10 states have call predecessors, (130), 22 states have return successors, (130), 18 states have call predecessors, (130), 18 states have call successors, (130) [2023-12-21 01:18:28,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:32,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:34,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:38,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:47,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:51,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:55,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:18:59,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:01,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:05,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:09,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:13,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:21,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:26,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:45,458 WARN L293 SmtUtils]: Spent 17.74s on a formula simplification. DAG size of input: 266 DAG size of output: 260 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:19:49,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:53,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:19:57,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:20:01,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:20:05,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:20:09,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:20:13,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:20:34,627 WARN L293 SmtUtils]: Spent 13.81s on a formula simplification. DAG size of input: 285 DAG size of output: 214 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:20:49,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:21:06,765 WARN L293 SmtUtils]: Spent 16.45s on a formula simplification. DAG size of input: 220 DAG size of output: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:21:38,432 WARN L293 SmtUtils]: Spent 30.73s on a formula simplification. DAG size of input: 269 DAG size of output: 177 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:22:41,740 WARN L293 SmtUtils]: Spent 56.34s on a formula simplification. DAG size of input: 295 DAG size of output: 291 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:23:31,399 WARN L293 SmtUtils]: Spent 44.49s on a formula simplification. DAG size of input: 314 DAG size of output: 224 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:23:43,207 WARN L293 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 218 DAG size of output: 142 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:23:45,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:24:24,338 WARN L293 SmtUtils]: Spent 27.51s on a formula simplification. DAG size of input: 267 DAG size of output: 175 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:25:27,079 WARN L293 SmtUtils]: Spent 56.00s on a formula simplification. DAG size of input: 293 DAG size of output: 291 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:26:26,092 WARN L293 SmtUtils]: Spent 50.68s on a formula simplification. DAG size of input: 312 DAG size of output: 203 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:26:28,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:26:33,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:27:11,365 WARN L293 SmtUtils]: Spent 24.61s on a formula simplification. DAG size of input: 268 DAG size of output: 262 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:27:15,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:27:19,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 01:27:36,667 WARN L293 SmtUtils]: Spent 16.21s on a formula simplification. DAG size of input: 257 DAG size of output: 253 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 01:27:51,208 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 01:27:51,221 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 01:27:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 01:27:51,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5635 ImplicationChecksByTransitivity, 563.0s TimeCoverageRelationStatistics Valid=4490, Invalid=14676, Unknown=16, NotChecked=0, Total=19182 [2023-12-21 01:27:51,475 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 3580 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 1205 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3580 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 4497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:27:51,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3580 Valid, 2406 Invalid, 4497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 3270 Invalid, 22 Unknown, 0 Unchecked, 117.6s Time] [2023-12-21 01:27:51,476 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:27:51,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-21 01:27:51,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:27:51,688 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (902states) and FLOYD_HOARE automaton (currently 77 states, 64 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-11-8-4-4-4-4-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-7-1 context. [2023-12-21 01:27:51,692 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:27:51,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 01:27:51,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:27:51 BoogieIcfgContainer [2023-12-21 01:27:51,695 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 01:27:51,695 INFO L158 Benchmark]: Toolchain (without parser) took 872849.14ms. Allocated memory was 229.6MB in the beginning and 843.1MB in the end (delta: 613.4MB). Free memory was 188.0MB in the beginning and 338.8MB in the end (delta: -150.8MB). Peak memory consumption was 463.6MB. Max. memory is 8.0GB. [2023-12-21 01:27:51,695 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 170.9MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 01:27:51,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.11ms. Allocated memory is still 229.6MB. Free memory was 188.0MB in the beginning and 149.6MB in the end (delta: 38.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-21 01:27:51,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.53ms. Allocated memory is still 229.6MB. Free memory was 149.6MB in the beginning and 132.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 01:27:51,695 INFO L158 Benchmark]: Boogie Preprocessor took 189.02ms. Allocated memory is still 229.6MB. Free memory was 132.4MB in the beginning and 185.5MB in the end (delta: -53.0MB). Peak memory consumption was 50.8MB. Max. memory is 8.0GB. [2023-12-21 01:27:51,696 INFO L158 Benchmark]: RCFGBuilder took 961.35ms. Allocated memory is still 229.6MB. Free memory was 185.5MB in the beginning and 90.0MB in the end (delta: 95.4MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. [2023-12-21 01:27:51,697 INFO L158 Benchmark]: TraceAbstraction took 871074.70ms. Allocated memory was 229.6MB in the beginning and 843.1MB in the end (delta: 613.4MB). Free memory was 89.0MB in the beginning and 338.8MB in the end (delta: -249.9MB). Peak memory consumption was 363.6MB. Max. memory is 8.0GB. [2023-12-21 01:27:51,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 170.9MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 517.11ms. Allocated memory is still 229.6MB. Free memory was 188.0MB in the beginning and 149.6MB in the end (delta: 38.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 101.53ms. Allocated memory is still 229.6MB. Free memory was 149.6MB in the beginning and 132.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 189.02ms. Allocated memory is still 229.6MB. Free memory was 132.4MB in the beginning and 185.5MB in the end (delta: -53.0MB). Peak memory consumption was 50.8MB. Max. memory is 8.0GB. * RCFGBuilder took 961.35ms. Allocated memory is still 229.6MB. Free memory was 185.5MB in the beginning and 90.0MB in the end (delta: 95.4MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. * TraceAbstraction took 871074.70ms. Allocated memory was 229.6MB in the beginning and 843.1MB in the end (delta: 613.4MB). Free memory was 89.0MB in the beginning and 338.8MB in the end (delta: -249.9MB). Peak memory consumption was 363.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (902states) and FLOYD_HOARE automaton (currently 77 states, 64 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-11-8-4-4-4-4-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-7-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.0s, OverallIterations: 24, TraceHistogramMax: 65, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 601.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 20058 SdHoareTripleChecker+Valid, 134.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19754 mSDsluCounter, 32286 SdHoareTripleChecker+Invalid, 131.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23004 mSDsCounter, 5039 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16775 IncrementalHoareTripleChecker+Invalid, 21837 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5039 mSolverCounterUnsat, 9282 mSDtfsCounter, 16775 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16293 GetRequests, 15828 SyntacticMatches, 6 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8094 ImplicationChecksByTransitivity, 566.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1268occurred in iteration=10, InterpolantAutomatonStates: 264, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 23 MinimizatonAttempts, 3790 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 20.2s SatisfiabilityAnalysisTime, 236.3s InterpolantComputationTime, 11136 NumberOfCodeBlocks, 11136 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 16018 ConstructedInterpolants, 0 QuantifiedInterpolants, 106691 SizeOfPredicates, 117 NumberOfNonLiveVariables, 28409 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 36 InterpolantComputations, 12 PerfectInterpolantSequences, 294249/299520 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown