/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 22:38:36,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 22:38:36,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 22:38:36,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 22:38:36,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 22:38:36,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 22:38:36,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 22:38:36,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 22:38:36,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 22:38:36,250 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 22:38:36,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 22:38:36,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 22:38:36,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 22:38:36,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 22:38:36,255 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 22:38:36,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 22:38:36,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 22:38:36,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 22:38:36,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 22:38:36,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 22:38:36,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 22:38:36,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 22:38:36,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 22:38:36,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 22:38:36,266 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 22:38:36,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 22:38:36,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 22:38:36,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 22:38:36,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 22:38:36,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:38:36,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 22:38:36,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 22:38:36,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 22:38:36,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 22:38:36,269 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 22:38:36,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 22:38:36,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 22:38:36,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 22:38:36,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 22:38:36,517 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 22:38:36,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c [2023-12-25 22:38:37,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 22:38:38,029 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 22:38:38,030 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c [2023-12-25 22:38:38,058 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d453396/b12458a9be8642a987b99f459b74a031/FLAG8de015cb8 [2023-12-25 22:38:38,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d453396/b12458a9be8642a987b99f459b74a031 [2023-12-25 22:38:38,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 22:38:38,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 22:38:38,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 22:38:38,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 22:38:38,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 22:38:38,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:38:38" (1/1) ... [2023-12-25 22:38:38,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2ce6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:38, skipping insertion in model container [2023-12-25 22:38:38,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:38:38" (1/1) ... [2023-12-25 22:38:38,162 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 22:38:38,378 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c[1176,1189] [2023-12-25 22:38:38,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:38:38,943 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 22:38:38,950 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.2.prop1-func-interl.c[1176,1189] [2023-12-25 22:38:39,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:38:39,282 INFO L206 MainTranslator]: Completed translation [2023-12-25 22:38:39,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39 WrapperNode [2023-12-25 22:38:39,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 22:38:39,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 22:38:39,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 22:38:39,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 22:38:39,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:39,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:41,033 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18672 [2023-12-25 22:38:41,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 22:38:41,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 22:38:41,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 22:38:41,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 22:38:41,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:41,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:41,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:42,095 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 22:38:42,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:42,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:42,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:42,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:42,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:43,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:43,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 22:38:43,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 22:38:43,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 22:38:43,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 22:38:43,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (1/1) ... [2023-12-25 22:38:43,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:38:43,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:38:43,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 22:38:43,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 22:38:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 22:38:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 22:38:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 22:38:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 22:38:44,226 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 22:38:44,227 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 22:38:52,336 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 22:38:52,579 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 22:38:52,579 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 22:38:52,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:38:52 BoogieIcfgContainer [2023-12-25 22:38:52,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 22:38:52,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 22:38:52,584 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 22:38:52,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 22:38:52,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:38:38" (1/3) ... [2023-12-25 22:38:52,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38592cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:38:52, skipping insertion in model container [2023-12-25 22:38:52,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:39" (2/3) ... [2023-12-25 22:38:52,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38592cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:38:52, skipping insertion in model container [2023-12-25 22:38:52,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:38:52" (3/3) ... [2023-12-25 22:38:52,589 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.2.prop1-func-interl.c [2023-12-25 22:38:52,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 22:38:52,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 22:38:52,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 22:38:52,714 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;@7a41a908, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 22:38:52,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 22:38:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 4292 states, 4290 states have (on average 1.6703962703962705) internal successors, (7166), 4291 states have internal predecessors, (7166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-25 22:38:52,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:38:52,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:38:52,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:38:52,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:38:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1107750039, now seen corresponding path program 1 times [2023-12-25 22:38:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:38:52,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782741710] [2023-12-25 22:38:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:38:52,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:38:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:38:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:38:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:38:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782741710] [2023-12-25 22:38:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782741710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:38:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:38:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:38:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829891329] [2023-12-25 22:38:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:38:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:38:54,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:38:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:38:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:38:54,244 INFO L87 Difference]: Start difference. First operand has 4292 states, 4290 states have (on average 1.6703962703962705) internal successors, (7166), 4291 states have internal predecessors, (7166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:38:58,263 INFO L93 Difference]: Finished difference Result 12540 states and 20944 transitions. [2023-12-25 22:38:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:38:58,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-12-25 22:38:58,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:38:58,313 INFO L225 Difference]: With dead ends: 12540 [2023-12-25 22:38:58,314 INFO L226 Difference]: Without dead ends: 8414 [2023-12-25 22:38:58,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:38:58,330 INFO L413 NwaCegarLoop]: 5826 mSDtfsCounter, 20713 mSDsluCounter, 11646 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20713 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 22:38:58,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20713 Valid, 17472 Invalid, 4014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 22:38:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8414 states. [2023-12-25 22:38:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8414 to 4455. [2023-12-25 22:38:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 4454 states have (on average 1.669286035024697) internal successors, (7435), 4454 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 7435 transitions. [2023-12-25 22:38:58,527 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 7435 transitions. Word has length 228 [2023-12-25 22:38:58,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:38:58,531 INFO L495 AbstractCegarLoop]: Abstraction has 4455 states and 7435 transitions. [2023-12-25 22:38:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:58,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 7435 transitions. [2023-12-25 22:38:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-25 22:38:58,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:38:58,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:38:58,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 22:38:58,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:38:58,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:38:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1453295833, now seen corresponding path program 1 times [2023-12-25 22:38:58,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:38:58,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133145054] [2023-12-25 22:38:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:38:58,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:38:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:38:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:38:59,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:38:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133145054] [2023-12-25 22:38:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133145054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:38:59,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:38:59,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:38:59,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030124050] [2023-12-25 22:38:59,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:38:59,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:38:59,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:38:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:38:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:38:59,231 INFO L87 Difference]: Start difference. First operand 4455 states and 7435 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:38:59,342 INFO L93 Difference]: Finished difference Result 4459 states and 7439 transitions. [2023-12-25 22:38:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:38:59,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2023-12-25 22:38:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:38:59,362 INFO L225 Difference]: With dead ends: 4459 [2023-12-25 22:38:59,362 INFO L226 Difference]: Without dead ends: 4457 [2023-12-25 22:38:59,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:38:59,365 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 1 mSDsluCounter, 14313 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:38:59,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21472 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:38:59,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2023-12-25 22:38:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 4457. [2023-12-25 22:38:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4457 states, 4456 states have (on average 1.6689856373429084) internal successors, (7437), 4456 states have internal predecessors, (7437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 7437 transitions. [2023-12-25 22:38:59,454 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 7437 transitions. Word has length 229 [2023-12-25 22:38:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:38:59,456 INFO L495 AbstractCegarLoop]: Abstraction has 4457 states and 7437 transitions. [2023-12-25 22:38:59,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 7437 transitions. [2023-12-25 22:38:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-25 22:38:59,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:38:59,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:38:59,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 22:38:59,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:38:59,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:38:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2100771571, now seen corresponding path program 1 times [2023-12-25 22:38:59,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:38:59,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174673429] [2023-12-25 22:38:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:38:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:38:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:38:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:38:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:38:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174673429] [2023-12-25 22:38:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174673429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:38:59,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:38:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:38:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211175615] [2023-12-25 22:38:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:38:59,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:38:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:38:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:38:59,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:38:59,851 INFO L87 Difference]: Start difference. First operand 4457 states and 7437 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:38:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:38:59,978 INFO L93 Difference]: Finished difference Result 8586 states and 14329 transitions. [2023-12-25 22:38:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:38:59,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2023-12-25 22:38:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:38:59,995 INFO L225 Difference]: With dead ends: 8586 [2023-12-25 22:38:59,995 INFO L226 Difference]: Without dead ends: 4460 [2023-12-25 22:39:00,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:00,006 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 1 mSDsluCounter, 14311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21470 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:00,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21470 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2023-12-25 22:39:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 4459. [2023-12-25 22:39:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4459 states, 4458 states have (on average 1.6686855091969492) internal successors, (7439), 4458 states have internal predecessors, (7439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 7439 transitions. [2023-12-25 22:39:00,116 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 7439 transitions. Word has length 230 [2023-12-25 22:39:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:00,117 INFO L495 AbstractCegarLoop]: Abstraction has 4459 states and 7439 transitions. [2023-12-25 22:39:00,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 7439 transitions. [2023-12-25 22:39:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-25 22:39:00,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:00,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 22:39:00,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:00,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash -909840383, now seen corresponding path program 1 times [2023-12-25 22:39:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:00,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650053240] [2023-12-25 22:39:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:00,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650053240] [2023-12-25 22:39:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650053240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:00,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133432004] [2023-12-25 22:39:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:00,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:39:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:39:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:00,680 INFO L87 Difference]: Start difference. First operand 4459 states and 7439 transitions. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:01,058 INFO L93 Difference]: Finished difference Result 12705 states and 21204 transitions. [2023-12-25 22:39:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:39:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-12-25 22:39:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:01,103 INFO L225 Difference]: With dead ends: 12705 [2023-12-25 22:39:01,103 INFO L226 Difference]: Without dead ends: 8577 [2023-12-25 22:39:01,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:39:01,118 INFO L413 NwaCegarLoop]: 7425 mSDtfsCounter, 27839 mSDsluCounter, 21726 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27839 SdHoareTripleChecker+Valid, 29151 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:01,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27839 Valid, 29151 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:39:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8577 states. [2023-12-25 22:39:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 4461. [2023-12-25 22:39:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 4460 states have (on average 1.6683856502242151) internal successors, (7441), 4460 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 7441 transitions. [2023-12-25 22:39:01,255 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 7441 transitions. Word has length 231 [2023-12-25 22:39:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:01,256 INFO L495 AbstractCegarLoop]: Abstraction has 4461 states and 7441 transitions. [2023-12-25 22:39:01,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 7441 transitions. [2023-12-25 22:39:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:01,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:01,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:01,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 22:39:01,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:01,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:01,473 INFO L85 PathProgramCache]: Analyzing trace with hash -446363530, now seen corresponding path program 1 times [2023-12-25 22:39:01,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:01,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22136878] [2023-12-25 22:39:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:01,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:01,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759665756] [2023-12-25 22:39:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:01,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:01,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:01,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:01,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 22:39:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:05,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 12984 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:39:05,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:05,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:05,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:05,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22136878] [2023-12-25 22:39:05,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:05,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759665756] [2023-12-25 22:39:05,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759665756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:05,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:05,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:05,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513293358] [2023-12-25 22:39:05,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:05,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:05,684 INFO L87 Difference]: Start difference. First operand 4461 states and 7441 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:05,806 INFO L93 Difference]: Finished difference Result 8599 states and 14347 transitions. [2023-12-25 22:39:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:05,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:05,817 INFO L225 Difference]: With dead ends: 8599 [2023-12-25 22:39:05,818 INFO L226 Difference]: Without dead ends: 4471 [2023-12-25 22:39:05,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:05,825 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:05,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2023-12-25 22:39:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4463. [2023-12-25 22:39:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4462 states have (on average 1.668086060062752) internal successors, (7443), 4462 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 7443 transitions. [2023-12-25 22:39:05,899 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 7443 transitions. Word has length 2918 [2023-12-25 22:39:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:05,901 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 7443 transitions. [2023-12-25 22:39:05,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 7443 transitions. [2023-12-25 22:39:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:06,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:06,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:06,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:06,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:06,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:06,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1695106620, now seen corresponding path program 1 times [2023-12-25 22:39:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:06,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768700517] [2023-12-25 22:39:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:06,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:06,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89980709] [2023-12-25 22:39:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:06,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:06,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:06,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 22:39:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:09,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 12985 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:39:09,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:09,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:09,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768700517] [2023-12-25 22:39:09,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89980709] [2023-12-25 22:39:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89980709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:09,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896030721] [2023-12-25 22:39:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:09,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:09,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:09,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:09,961 INFO L87 Difference]: Start difference. First operand 4463 states and 7443 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:10,080 INFO L93 Difference]: Finished difference Result 8602 states and 14349 transitions. [2023-12-25 22:39:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:10,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:10,091 INFO L225 Difference]: With dead ends: 8602 [2023-12-25 22:39:10,092 INFO L226 Difference]: Without dead ends: 4472 [2023-12-25 22:39:10,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:10,098 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:10,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2023-12-25 22:39:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4464. [2023-12-25 22:39:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4463 states have (on average 1.667936365673314) internal successors, (7444), 4463 states have internal predecessors, (7444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 7444 transitions. [2023-12-25 22:39:10,176 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 7444 transitions. Word has length 2918 [2023-12-25 22:39:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:10,177 INFO L495 AbstractCegarLoop]: Abstraction has 4464 states and 7444 transitions. [2023-12-25 22:39:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 7444 transitions. [2023-12-25 22:39:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:10,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:10,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:10,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:10,452 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,SelfDestructingSolverStorable5 [2023-12-25 22:39:10,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:10,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1459449874, now seen corresponding path program 1 times [2023-12-25 22:39:10,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581115922] [2023-12-25 22:39:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:10,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760640412] [2023-12-25 22:39:10,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:10,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:10,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:10,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 22:39:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:14,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 12986 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:39:14,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:14,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:14,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581115922] [2023-12-25 22:39:14,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760640412] [2023-12-25 22:39:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760640412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:14,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426250420] [2023-12-25 22:39:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:14,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:14,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:14,525 INFO L87 Difference]: Start difference. First operand 4464 states and 7444 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:14,631 INFO L93 Difference]: Finished difference Result 8604 states and 14351 transitions. [2023-12-25 22:39:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:14,641 INFO L225 Difference]: With dead ends: 8604 [2023-12-25 22:39:14,641 INFO L226 Difference]: Without dead ends: 4473 [2023-12-25 22:39:14,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:14,648 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:14,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2023-12-25 22:39:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4465. [2023-12-25 22:39:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4464 states have (on average 1.6677867383512546) internal successors, (7445), 4464 states have internal predecessors, (7445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 7445 transitions. [2023-12-25 22:39:14,713 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 7445 transitions. Word has length 2918 [2023-12-25 22:39:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:14,714 INFO L495 AbstractCegarLoop]: Abstraction has 4465 states and 7445 transitions. [2023-12-25 22:39:14,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 7445 transitions. [2023-12-25 22:39:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:14,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:14,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:14,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:14,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:14,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:14,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1981297788, now seen corresponding path program 1 times [2023-12-25 22:39:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381642196] [2023-12-25 22:39:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:15,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:15,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657791489] [2023-12-25 22:39:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:15,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:15,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 22:39:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:18,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 12987 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:39:18,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:18,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:18,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:18,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381642196] [2023-12-25 22:39:18,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:18,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657791489] [2023-12-25 22:39:18,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657791489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:18,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:18,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147479808] [2023-12-25 22:39:18,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:18,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:18,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:18,653 INFO L87 Difference]: Start difference. First operand 4465 states and 7445 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:18,835 INFO L93 Difference]: Finished difference Result 8606 states and 14353 transitions. [2023-12-25 22:39:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:18,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:18,845 INFO L225 Difference]: With dead ends: 8606 [2023-12-25 22:39:18,845 INFO L226 Difference]: Without dead ends: 4474 [2023-12-25 22:39:18,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:18,852 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:18,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:39:18,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2023-12-25 22:39:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4466. [2023-12-25 22:39:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 1.6676371780515118) internal successors, (7446), 4465 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 7446 transitions. [2023-12-25 22:39:18,917 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 7446 transitions. Word has length 2918 [2023-12-25 22:39:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:18,918 INFO L495 AbstractCegarLoop]: Abstraction has 4466 states and 7446 transitions. [2023-12-25 22:39:18,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 7446 transitions. [2023-12-25 22:39:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:18,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:18,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:19,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:19,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:19,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:19,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1819951606, now seen corresponding path program 1 times [2023-12-25 22:39:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450313948] [2023-12-25 22:39:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:19,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000809022] [2023-12-25 22:39:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:19,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:19,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:19,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:19,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 22:39:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:22,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 12988 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:39:22,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:22,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450313948] [2023-12-25 22:39:22,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000809022] [2023-12-25 22:39:22,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000809022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:22,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:22,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869942779] [2023-12-25 22:39:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:22,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:22,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:22,694 INFO L87 Difference]: Start difference. First operand 4466 states and 7446 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:22,800 INFO L93 Difference]: Finished difference Result 8608 states and 14355 transitions. [2023-12-25 22:39:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:22,811 INFO L225 Difference]: With dead ends: 8608 [2023-12-25 22:39:22,811 INFO L226 Difference]: Without dead ends: 4475 [2023-12-25 22:39:22,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:22,818 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:22,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2023-12-25 22:39:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4467. [2023-12-25 22:39:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.667487684729064) internal successors, (7447), 4466 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 7447 transitions. [2023-12-25 22:39:22,879 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 7447 transitions. Word has length 2918 [2023-12-25 22:39:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:22,881 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 7447 transitions. [2023-12-25 22:39:22,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 7447 transitions. [2023-12-25 22:39:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:22,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:22,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:22,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:23,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:23,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1749444120, now seen corresponding path program 1 times [2023-12-25 22:39:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245600673] [2023-12-25 22:39:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:23,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:23,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414325603] [2023-12-25 22:39:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:23,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:23,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:23,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 22:39:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:26,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 12989 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:39:26,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:26,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:26,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245600673] [2023-12-25 22:39:26,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414325603] [2023-12-25 22:39:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414325603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:26,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:26,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:26,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975432930] [2023-12-25 22:39:26,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:26,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:26,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:26,477 INFO L87 Difference]: Start difference. First operand 4467 states and 7447 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:26,583 INFO L93 Difference]: Finished difference Result 8610 states and 14357 transitions. [2023-12-25 22:39:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:26,593 INFO L225 Difference]: With dead ends: 8610 [2023-12-25 22:39:26,593 INFO L226 Difference]: Without dead ends: 4476 [2023-12-25 22:39:26,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:26,599 INFO L413 NwaCegarLoop]: 7159 mSDtfsCounter, 12 mSDsluCounter, 14308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:26,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21467 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2023-12-25 22:39:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4468. [2023-12-25 22:39:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.66733825833893) internal successors, (7448), 4467 states have internal predecessors, (7448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7448 transitions. [2023-12-25 22:39:26,660 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7448 transitions. Word has length 2918 [2023-12-25 22:39:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:26,662 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7448 transitions. [2023-12-25 22:39:26,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 4 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7448 transitions. [2023-12-25 22:39:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2919 [2023-12-25 22:39:26,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:26,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:26,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:26,968 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:26,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash -728820006, now seen corresponding path program 1 times [2023-12-25 22:39:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090935223] [2023-12-25 22:39:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:27,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201626685] [2023-12-25 22:39:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:27,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:27,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:27,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:27,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 22:39:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:30,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 12990 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 22:39:30,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:31,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:31,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090935223] [2023-12-25 22:39:31,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:31,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201626685] [2023-12-25 22:39:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201626685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:31,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:31,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 22:39:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584873923] [2023-12-25 22:39:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:31,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:31,334 INFO L87 Difference]: Start difference. First operand 4468 states and 7448 transitions. Second operand has 4 states, 4 states have (on average 729.5) internal successors, (2918), 3 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:33,450 INFO L93 Difference]: Finished difference Result 8925 states and 14883 transitions. [2023-12-25 22:39:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 3 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2918 [2023-12-25 22:39:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:33,459 INFO L225 Difference]: With dead ends: 8925 [2023-12-25 22:39:33,459 INFO L226 Difference]: Without dead ends: 4790 [2023-12-25 22:39:33,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2918 GetRequests, 2915 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:33,465 INFO L413 NwaCegarLoop]: 6314 mSDtfsCounter, 13637 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13637 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:33,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13637 Valid, 6925 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 22:39:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2023-12-25 22:39:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4468. [2023-12-25 22:39:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.6671143944481754) internal successors, (7447), 4467 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7447 transitions. [2023-12-25 22:39:33,524 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7447 transitions. Word has length 2918 [2023-12-25 22:39:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:33,525 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7447 transitions. [2023-12-25 22:39:33,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.5) internal successors, (2918), 3 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7447 transitions. [2023-12-25 22:39:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2920 [2023-12-25 22:39:33,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:33,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:33,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:33,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:33,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -521145992, now seen corresponding path program 1 times [2023-12-25 22:39:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:33,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276947557] [2023-12-25 22:39:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:34,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167476192] [2023-12-25 22:39:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:34,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:34,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:34,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:34,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 22:39:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:37,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 12991 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 22:39:37,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:38,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:38,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276947557] [2023-12-25 22:39:38,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:38,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167476192] [2023-12-25 22:39:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167476192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 22:39:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617208625] [2023-12-25 22:39:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:38,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:38,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:38,264 INFO L87 Difference]: Start difference. First operand 4468 states and 7447 transitions. Second operand has 4 states, 4 states have (on average 729.75) internal successors, (2919), 3 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:40,292 INFO L93 Difference]: Finished difference Result 8932 states and 14892 transitions. [2023-12-25 22:39:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:40,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 729.75) internal successors, (2919), 3 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2919 [2023-12-25 22:39:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:40,304 INFO L225 Difference]: With dead ends: 8932 [2023-12-25 22:39:40,304 INFO L226 Difference]: Without dead ends: 4797 [2023-12-25 22:39:40,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2919 GetRequests, 2916 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:40,310 INFO L413 NwaCegarLoop]: 6323 mSDtfsCounter, 13630 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13630 SdHoareTripleChecker+Valid, 6944 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:40,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13630 Valid, 6944 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 22:39:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2023-12-25 22:39:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4468. [2023-12-25 22:39:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.666890530557421) internal successors, (7446), 4467 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7446 transitions. [2023-12-25 22:39:40,367 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7446 transitions. Word has length 2919 [2023-12-25 22:39:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:40,368 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7446 transitions. [2023-12-25 22:39:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 729.75) internal successors, (2919), 3 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7446 transitions. [2023-12-25 22:39:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2921 [2023-12-25 22:39:40,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:40,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:40,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:40,652 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,SelfDestructingSolverStorable11 [2023-12-25 22:39:40,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:40,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1878756501, now seen corresponding path program 1 times [2023-12-25 22:39:40,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690667898] [2023-12-25 22:39:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:40,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:40,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:40,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813729857] [2023-12-25 22:39:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:40,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:40,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:40,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:40,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 22:39:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:43,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 12992 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 22:39:43,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:44,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690667898] [2023-12-25 22:39:44,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813729857] [2023-12-25 22:39:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813729857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:44,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:44,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 22:39:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724535954] [2023-12-25 22:39:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:44,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:44,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:44,991 INFO L87 Difference]: Start difference. First operand 4468 states and 7446 transitions. Second operand has 4 states, 4 states have (on average 730.0) internal successors, (2920), 3 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:46,843 INFO L93 Difference]: Finished difference Result 8936 states and 14896 transitions. [2023-12-25 22:39:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:46,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 730.0) internal successors, (2920), 3 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2920 [2023-12-25 22:39:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:46,853 INFO L225 Difference]: With dead ends: 8936 [2023-12-25 22:39:46,853 INFO L226 Difference]: Without dead ends: 4801 [2023-12-25 22:39:46,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2920 GetRequests, 2917 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:46,859 INFO L413 NwaCegarLoop]: 6327 mSDtfsCounter, 13625 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:46,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 6953 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 22:39:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2023-12-25 22:39:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4468. [2023-12-25 22:39:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.6666666666666667) internal successors, (7445), 4467 states have internal predecessors, (7445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7445 transitions. [2023-12-25 22:39:46,916 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7445 transitions. Word has length 2920 [2023-12-25 22:39:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:46,917 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7445 transitions. [2023-12-25 22:39:46,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 730.0) internal successors, (2920), 3 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7445 transitions. [2023-12-25 22:39:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2922 [2023-12-25 22:39:46,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:46,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:47,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:47,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-25 22:39:47,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:47,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 599348547, now seen corresponding path program 1 times [2023-12-25 22:39:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939546739] [2023-12-25 22:39:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:47,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:47,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007074329] [2023-12-25 22:39:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:47,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:47,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:47,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 22:39:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:50,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 12993 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 22:39:50,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:51,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:51,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939546739] [2023-12-25 22:39:51,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007074329] [2023-12-25 22:39:51,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007074329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:51,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:51,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 22:39:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019067038] [2023-12-25 22:39:51,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:51,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:51,427 INFO L87 Difference]: Start difference. First operand 4468 states and 7445 transitions. Second operand has 4 states, 4 states have (on average 730.25) internal successors, (2921), 3 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:53,273 INFO L93 Difference]: Finished difference Result 8943 states and 14905 transitions. [2023-12-25 22:39:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 730.25) internal successors, (2921), 3 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2921 [2023-12-25 22:39:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:53,282 INFO L225 Difference]: With dead ends: 8943 [2023-12-25 22:39:53,282 INFO L226 Difference]: Without dead ends: 4808 [2023-12-25 22:39:53,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2921 GetRequests, 2918 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:53,288 INFO L413 NwaCegarLoop]: 6336 mSDtfsCounter, 13618 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13618 SdHoareTripleChecker+Valid, 6972 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:53,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13618 Valid, 6972 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 22:39:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2023-12-25 22:39:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4468. [2023-12-25 22:39:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.6664428027759122) internal successors, (7444), 4467 states have internal predecessors, (7444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7444 transitions. [2023-12-25 22:39:53,348 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7444 transitions. Word has length 2921 [2023-12-25 22:39:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:53,349 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7444 transitions. [2023-12-25 22:39:53,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 730.25) internal successors, (2921), 3 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7444 transitions. [2023-12-25 22:39:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2923 [2023-12-25 22:39:53,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:53,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:53,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 22:39:53,632 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,SelfDestructingSolverStorable13 [2023-12-25 22:39:53,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1591613444, now seen corresponding path program 1 times [2023-12-25 22:39:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:53,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559758327] [2023-12-25 22:39:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:53,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:53,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:53,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371603097] [2023-12-25 22:39:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:53,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:53,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:39:53,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 22:39:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:56,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 22:39:56,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:39:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:57,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:39:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559758327] [2023-12-25 22:39:57,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:39:57,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371603097] [2023-12-25 22:39:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371603097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:57,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:57,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 22:39:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643550383] [2023-12-25 22:39:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:57,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:57,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:57,782 INFO L87 Difference]: Start difference. First operand 4468 states and 7444 transitions. Second operand has 4 states, 4 states have (on average 730.5) internal successors, (2922), 3 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:59,663 INFO L93 Difference]: Finished difference Result 8947 states and 14909 transitions. [2023-12-25 22:39:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 730.5) internal successors, (2922), 3 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2922 [2023-12-25 22:39:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:59,669 INFO L225 Difference]: With dead ends: 8947 [2023-12-25 22:39:59,670 INFO L226 Difference]: Without dead ends: 4812 [2023-12-25 22:39:59,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2922 GetRequests, 2919 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:59,675 INFO L413 NwaCegarLoop]: 6340 mSDtfsCounter, 13613 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13613 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:59,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13613 Valid, 6981 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 22:39:59,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2023-12-25 22:39:59,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 4468. [2023-12-25 22:39:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.6662189388851578) internal successors, (7443), 4467 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7443 transitions. [2023-12-25 22:39:59,727 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7443 transitions. Word has length 2922 [2023-12-25 22:39:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:59,728 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7443 transitions. [2023-12-25 22:39:59,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 730.5) internal successors, (2922), 3 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:39:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7443 transitions. [2023-12-25 22:39:59,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2924 [2023-12-25 22:39:59,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:59,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:59,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:00,008 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,SelfDestructingSolverStorable14 [2023-12-25 22:40:00,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:00,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash 108789262, now seen corresponding path program 1 times [2023-12-25 22:40:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:00,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473666509] [2023-12-25 22:40:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:00,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:00,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75887834] [2023-12-25 22:40:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:00,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:00,214 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:40:00,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 22:40:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:03,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 12995 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 22:40:03,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:04,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:04,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473666509] [2023-12-25 22:40:04,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:04,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75887834] [2023-12-25 22:40:04,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75887834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:04,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:04,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 22:40:04,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318806649] [2023-12-25 22:40:04,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:04,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:04,178 INFO L87 Difference]: Start difference. First operand 4468 states and 7443 transitions. Second operand has 4 states, 4 states have (on average 730.75) internal successors, (2923), 3 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:06,052 INFO L93 Difference]: Finished difference Result 8954 states and 14918 transitions. [2023-12-25 22:40:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:06,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 730.75) internal successors, (2923), 3 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2923 [2023-12-25 22:40:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:06,065 INFO L225 Difference]: With dead ends: 8954 [2023-12-25 22:40:06,065 INFO L226 Difference]: Without dead ends: 4819 [2023-12-25 22:40:06,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2923 GetRequests, 2920 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:40:06,071 INFO L413 NwaCegarLoop]: 6349 mSDtfsCounter, 13606 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13606 SdHoareTripleChecker+Valid, 7000 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:06,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13606 Valid, 7000 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 22:40:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2023-12-25 22:40:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 4468. [2023-12-25 22:40:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 1.6659950749944035) internal successors, (7442), 4467 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 7442 transitions. [2023-12-25 22:40:06,124 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 7442 transitions. Word has length 2923 [2023-12-25 22:40:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:06,125 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 7442 transitions. [2023-12-25 22:40:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 730.75) internal successors, (2923), 3 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 7442 transitions. [2023-12-25 22:40:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2925 [2023-12-25 22:40:06,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:06,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:06,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:06,386 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,SelfDestructingSolverStorable15 [2023-12-25 22:40:06,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:06,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash -932141939, now seen corresponding path program 1 times [2023-12-25 22:40:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:06,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567172159] [2023-12-25 22:40:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:06,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448095753] [2023-12-25 22:40:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:06,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:06,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:40:06,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 22:40:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:09,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 12996 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 22:40:09,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:21,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567172159] [2023-12-25 22:40:21,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448095753] [2023-12-25 22:40:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448095753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:21,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:21,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:40:21,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953317849] [2023-12-25 22:40:21,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:21,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:40:21,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:40:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:40:21,513 INFO L87 Difference]: Start difference. First operand 4468 states and 7442 transitions. Second operand has 5 states, 5 states have (on average 584.8) internal successors, (2924), 5 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:24,676 INFO L93 Difference]: Finished difference Result 12573 states and 20949 transitions. [2023-12-25 22:40:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:40:24,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 584.8) internal successors, (2924), 5 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2924 [2023-12-25 22:40:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:24,690 INFO L225 Difference]: With dead ends: 12573 [2023-12-25 22:40:24,690 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 22:40:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2925 GetRequests, 2920 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:40:24,696 INFO L413 NwaCegarLoop]: 6219 mSDtfsCounter, 4035 mSDsluCounter, 17849 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4035 SdHoareTripleChecker+Valid, 24068 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:24,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4035 Valid, 24068 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4572 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 22:40:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 22:40:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8428. [2023-12-25 22:40:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 1.6664293342826628) internal successors, (14043), 8427 states have internal predecessors, (14043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 14043 transitions. [2023-12-25 22:40:24,828 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 14043 transitions. Word has length 2924 [2023-12-25 22:40:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:24,830 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 14043 transitions. [2023-12-25 22:40:24,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 584.8) internal successors, (2924), 5 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 14043 transitions. [2023-12-25 22:40:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2926 [2023-12-25 22:40:24,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:24,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:24,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:25,104 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,SelfDestructingSolverStorable16 [2023-12-25 22:40:25,104 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:25,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash -604813563, now seen corresponding path program 1 times [2023-12-25 22:40:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:25,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748550889] [2023-12-25 22:40:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:25,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028671908] [2023-12-25 22:40:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:25,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:25,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:25,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:40:25,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 22:40:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:28,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 12999 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 22:40:28,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-25 22:40:28,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:40:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-25 22:40:28,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748550889] [2023-12-25 22:40:28,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028671908] [2023-12-25 22:40:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028671908] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:40:28,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:40:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-25 22:40:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365768957] [2023-12-25 22:40:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:40:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:40:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:40:28,964 INFO L87 Difference]: Start difference. First operand 8428 states and 14043 transitions. Second operand has 5 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:29,304 INFO L93 Difference]: Finished difference Result 20816 states and 34688 transitions. [2023-12-25 22:40:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:40:29,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2925 [2023-12-25 22:40:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:29,328 INFO L225 Difference]: With dead ends: 20816 [2023-12-25 22:40:29,328 INFO L226 Difference]: Without dead ends: 12721 [2023-12-25 22:40:29,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5848 GetRequests, 5838 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:40:29,340 INFO L413 NwaCegarLoop]: 20890 mSDtfsCounter, 13735 mSDsluCounter, 48908 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13735 SdHoareTripleChecker+Valid, 69798 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13735 Valid, 69798 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12721 states. [2023-12-25 22:40:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12721 to 8422. [2023-12-25 22:40:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 1.6663104144400902) internal successors, (14032), 8421 states have internal predecessors, (14032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 14032 transitions. [2023-12-25 22:40:29,490 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 14032 transitions. Word has length 2925 [2023-12-25 22:40:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:29,492 INFO L495 AbstractCegarLoop]: Abstraction has 8422 states and 14032 transitions. [2023-12-25 22:40:29,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 14032 transitions. [2023-12-25 22:40:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2927 [2023-12-25 22:40:29,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:29,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:29,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:29,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:29,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:29,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -362470163, now seen corresponding path program 1 times [2023-12-25 22:40:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485416615] [2023-12-25 22:40:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:30,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880121588] [2023-12-25 22:40:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:30,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:30,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:30,027 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) [2023-12-25 22:40:30,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 22:40:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:33,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 13003 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 22:40:33,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:36,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:36,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:36,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485416615] [2023-12-25 22:40:36,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:36,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880121588] [2023-12-25 22:40:36,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880121588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:36,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:36,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:40:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848011342] [2023-12-25 22:40:36,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:40:36,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:40:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:40:36,810 INFO L87 Difference]: Start difference. First operand 8422 states and 14032 transitions. Second operand has 6 states, 6 states have (on average 487.6666666666667) internal successors, (2926), 5 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:38,720 INFO L93 Difference]: Finished difference Result 20579 states and 34275 transitions. [2023-12-25 22:40:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:40:38,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 487.6666666666667) internal successors, (2926), 5 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2926 [2023-12-25 22:40:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:38,736 INFO L225 Difference]: With dead ends: 20579 [2023-12-25 22:40:38,737 INFO L226 Difference]: Without dead ends: 12490 [2023-12-25 22:40:38,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2928 GetRequests, 2921 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:40:38,747 INFO L413 NwaCegarLoop]: 6156 mSDtfsCounter, 26102 mSDsluCounter, 13061 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26102 SdHoareTripleChecker+Valid, 19217 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:38,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26102 Valid, 19217 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 22:40:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12490 states. [2023-12-25 22:40:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12490 to 9498. [2023-12-25 22:40:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9498 states, 9497 states have (on average 1.6659997894071812) internal successors, (15822), 9497 states have internal predecessors, (15822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9498 states to 9498 states and 15822 transitions. [2023-12-25 22:40:38,872 INFO L78 Accepts]: Start accepts. Automaton has 9498 states and 15822 transitions. Word has length 2926 [2023-12-25 22:40:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:38,873 INFO L495 AbstractCegarLoop]: Abstraction has 9498 states and 15822 transitions. [2023-12-25 22:40:38,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 487.6666666666667) internal successors, (2926), 5 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 9498 states and 15822 transitions. [2023-12-25 22:40:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2928 [2023-12-25 22:40:38,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:38,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:38,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:39,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:39,144 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:39,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1614877913, now seen corresponding path program 1 times [2023-12-25 22:40:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:39,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977745577] [2023-12-25 22:40:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:39,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:39,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981773852] [2023-12-25 22:40:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:39,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:39,340 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) [2023-12-25 22:40:39,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 22:40:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:42,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 13006 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 22:40:42,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:43,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:43,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:43,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977745577] [2023-12-25 22:40:43,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981773852] [2023-12-25 22:40:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981773852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:43,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:43,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:40:43,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620671393] [2023-12-25 22:40:43,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:40:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:43,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:40:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:40:43,357 INFO L87 Difference]: Start difference. First operand 9498 states and 15822 transitions. Second operand has 6 states, 6 states have (on average 487.8333333333333) internal successors, (2927), 6 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:47,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:47,208 INFO L93 Difference]: Finished difference Result 25502 states and 42500 transitions. [2023-12-25 22:40:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:40:47,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 487.8333333333333) internal successors, (2927), 6 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2927 [2023-12-25 22:40:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:47,225 INFO L225 Difference]: With dead ends: 25502 [2023-12-25 22:40:47,225 INFO L226 Difference]: Without dead ends: 16694 [2023-12-25 22:40:47,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2929 GetRequests, 2922 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:40:47,234 INFO L413 NwaCegarLoop]: 10102 mSDtfsCounter, 13666 mSDsluCounter, 25996 mSDsCounter, 0 mSdLazyCounter, 6939 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13666 SdHoareTripleChecker+Valid, 36098 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:47,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13666 Valid, 36098 Invalid, 6940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6939 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 22:40:47,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2023-12-25 22:40:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 10936. [2023-12-25 22:40:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10936 states, 10935 states have (on average 1.6657521719250115) internal successors, (18215), 10935 states have internal predecessors, (18215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 18215 transitions. [2023-12-25 22:40:47,364 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 18215 transitions. Word has length 2927 [2023-12-25 22:40:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:47,365 INFO L495 AbstractCegarLoop]: Abstraction has 10936 states and 18215 transitions. [2023-12-25 22:40:47,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 487.8333333333333) internal successors, (2927), 6 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 18215 transitions. [2023-12-25 22:40:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2929 [2023-12-25 22:40:47,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:47,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:47,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:47,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:47,680 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:47,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash 475163149, now seen corresponding path program 1 times [2023-12-25 22:40:47,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:47,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854304060] [2023-12-25 22:40:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:47,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:47,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307367198] [2023-12-25 22:40:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:47,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:47,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:47,882 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) [2023-12-25 22:40:47,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 22:40:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:50,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 13009 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:40:50,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:51,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854304060] [2023-12-25 22:40:51,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307367198] [2023-12-25 22:40:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307367198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:51,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:51,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:40:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907181223] [2023-12-25 22:40:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:40:51,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:40:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:40:51,568 INFO L87 Difference]: Start difference. First operand 10936 states and 18215 transitions. Second operand has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:54,869 INFO L93 Difference]: Finished difference Result 26221 states and 43694 transitions. [2023-12-25 22:40:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:40:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2928 [2023-12-25 22:40:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:54,882 INFO L225 Difference]: With dead ends: 26221 [2023-12-25 22:40:54,882 INFO L226 Difference]: Without dead ends: 16694 [2023-12-25 22:40:54,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2929 GetRequests, 2923 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:40:54,886 INFO L413 NwaCegarLoop]: 5820 mSDtfsCounter, 16064 mSDsluCounter, 17440 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16064 SdHoareTripleChecker+Valid, 23260 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:54,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16064 Valid, 23260 Invalid, 5360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 22:40:54,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2023-12-25 22:40:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 10958. [2023-12-25 22:40:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10958 states, 10957 states have (on average 1.665510632472392) internal successors, (18249), 10957 states have internal predecessors, (18249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10958 states to 10958 states and 18249 transitions. [2023-12-25 22:40:55,002 INFO L78 Accepts]: Start accepts. Automaton has 10958 states and 18249 transitions. Word has length 2928 [2023-12-25 22:40:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:55,003 INFO L495 AbstractCegarLoop]: Abstraction has 10958 states and 18249 transitions. [2023-12-25 22:40:55,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:40:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10958 states and 18249 transitions. [2023-12-25 22:40:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2930 [2023-12-25 22:40:55,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:55,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:55,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:55,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:55,269 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:55,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash -659338671, now seen corresponding path program 1 times [2023-12-25 22:40:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:55,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853305432] [2023-12-25 22:40:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:55,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:55,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342114989] [2023-12-25 22:40:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:55,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:55,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:55,489 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) [2023-12-25 22:40:55,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 22:40:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:58,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 13012 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:40:58,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:03,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:41:03,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:03,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853305432] [2023-12-25 22:41:03,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:03,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342114989] [2023-12-25 22:41:03,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342114989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:41:03,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:41:03,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:41:03,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616350525] [2023-12-25 22:41:03,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:03,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:41:03,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:41:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:41:03,405 INFO L87 Difference]: Start difference. First operand 10958 states and 18249 transitions. Second operand has 6 states, 6 states have (on average 488.1666666666667) internal successors, (2929), 6 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:06,619 INFO L93 Difference]: Finished difference Result 26243 states and 43726 transitions. [2023-12-25 22:41:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:41:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 488.1666666666667) internal successors, (2929), 6 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2929 [2023-12-25 22:41:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:06,638 INFO L225 Difference]: With dead ends: 26243 [2023-12-25 22:41:06,638 INFO L226 Difference]: Without dead ends: 16694 [2023-12-25 22:41:06,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2930 GetRequests, 2924 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:41:06,649 INFO L413 NwaCegarLoop]: 5820 mSDtfsCounter, 9890 mSDsluCounter, 17440 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9890 SdHoareTripleChecker+Valid, 23260 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:06,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9890 Valid, 23260 Invalid, 5360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 22:41:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2023-12-25 22:41:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 15174. [2023-12-25 22:41:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15174 states, 15173 states have (on average 1.666315165095894) internal successors, (25283), 15173 states have internal predecessors, (25283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15174 states to 15174 states and 25283 transitions. [2023-12-25 22:41:06,806 INFO L78 Accepts]: Start accepts. Automaton has 15174 states and 25283 transitions. Word has length 2929 [2023-12-25 22:41:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:06,807 INFO L495 AbstractCegarLoop]: Abstraction has 15174 states and 25283 transitions. [2023-12-25 22:41:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 488.1666666666667) internal successors, (2929), 6 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 15174 states and 25283 transitions. [2023-12-25 22:41:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2931 [2023-12-25 22:41:06,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:06,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:06,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:07,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:07,127 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:07,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 377101081, now seen corresponding path program 1 times [2023-12-25 22:41:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009928249] [2023-12-25 22:41:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:07,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:07,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043282489] [2023-12-25 22:41:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:07,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:07,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:07,325 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) [2023-12-25 22:41:07,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 22:41:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:10,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 13015 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:41:10,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:16,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:41:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009928249] [2023-12-25 22:41:16,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043282489] [2023-12-25 22:41:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043282489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:41:16,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:41:16,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:41:16,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111528206] [2023-12-25 22:41:16,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:41:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:41:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:41:16,621 INFO L87 Difference]: Start difference. First operand 15174 states and 25283 transitions. Second operand has 6 states, 6 states have (on average 488.3333333333333) internal successors, (2930), 6 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:19,856 INFO L93 Difference]: Finished difference Result 30459 states and 50758 transitions. [2023-12-25 22:41:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:41:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 488.3333333333333) internal successors, (2930), 6 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2930 [2023-12-25 22:41:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:19,875 INFO L225 Difference]: With dead ends: 30459 [2023-12-25 22:41:19,875 INFO L226 Difference]: Without dead ends: 16694 [2023-12-25 22:41:19,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2931 GetRequests, 2925 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:41:19,888 INFO L413 NwaCegarLoop]: 5820 mSDtfsCounter, 9883 mSDsluCounter, 17440 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9883 SdHoareTripleChecker+Valid, 23260 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:19,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9883 Valid, 23260 Invalid, 5360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 22:41:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2023-12-25 22:41:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 15186. [2023-12-25 22:41:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15186 states, 15185 states have (on average 1.666183733947975) internal successors, (25301), 15185 states have internal predecessors, (25301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15186 states to 15186 states and 25301 transitions. [2023-12-25 22:41:20,061 INFO L78 Accepts]: Start accepts. Automaton has 15186 states and 25301 transitions. Word has length 2930 [2023-12-25 22:41:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:20,062 INFO L495 AbstractCegarLoop]: Abstraction has 15186 states and 25301 transitions. [2023-12-25 22:41:20,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 488.3333333333333) internal successors, (2930), 6 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15186 states and 25301 transitions. [2023-12-25 22:41:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2932 [2023-12-25 22:41:20,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:20,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:20,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:20,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:20,311 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:20,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1482379233, now seen corresponding path program 1 times [2023-12-25 22:41:20,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837758413] [2023-12-25 22:41:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:20,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253328496] [2023-12-25 22:41:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:20,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:20,521 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) [2023-12-25 22:41:20,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 22:41:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:23,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 13019 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-25 22:41:23,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:28,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:41:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837758413] [2023-12-25 22:41:28,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253328496] [2023-12-25 22:41:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253328496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:41:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:41:28,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 22:41:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889700797] [2023-12-25 22:41:28,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:28,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 22:41:28,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 22:41:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:41:28,058 INFO L87 Difference]: Start difference. First operand 15186 states and 25301 transitions. Second operand has 9 states, 9 states have (on average 325.6666666666667) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:31,510 INFO L93 Difference]: Finished difference Result 31955 states and 53230 transitions. [2023-12-25 22:41:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:41:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 325.6666666666667) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2931 [2023-12-25 22:41:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:31,528 INFO L225 Difference]: With dead ends: 31955 [2023-12-25 22:41:31,528 INFO L226 Difference]: Without dead ends: 18178 [2023-12-25 22:41:31,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2934 GetRequests, 2923 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:41:31,540 INFO L413 NwaCegarLoop]: 6156 mSDtfsCounter, 32842 mSDsluCounter, 24563 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32842 SdHoareTripleChecker+Valid, 30719 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:31,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32842 Valid, 30719 Invalid, 5300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 22:41:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18178 states. [2023-12-25 22:41:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18178 to 15655. [2023-12-25 22:41:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15655 states, 15654 states have (on average 1.6661556151782293) internal successors, (26082), 15654 states have internal predecessors, (26082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15655 states to 15655 states and 26082 transitions. [2023-12-25 22:41:31,715 INFO L78 Accepts]: Start accepts. Automaton has 15655 states and 26082 transitions. Word has length 2931 [2023-12-25 22:41:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 15655 states and 26082 transitions. [2023-12-25 22:41:31,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 325.6666666666667) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 15655 states and 26082 transitions. [2023-12-25 22:41:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2933 [2023-12-25 22:41:31,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:31,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:31,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-25 22:41:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-25 22:41:32,040 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:32,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash -448705101, now seen corresponding path program 1 times [2023-12-25 22:41:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035758177] [2023-12-25 22:41:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:32,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:32,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103948925] [2023-12-25 22:41:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:32,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:32,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:32,255 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) [2023-12-25 22:41:32,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 22:41:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:35,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 13022 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 22:41:35,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:36,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:41:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035758177] [2023-12-25 22:41:36,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103948925] [2023-12-25 22:41:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103948925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:41:36,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:41:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:41:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022857316] [2023-12-25 22:41:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:41:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:41:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:41:36,372 INFO L87 Difference]: Start difference. First operand 15655 states and 26082 transitions. Second operand has 7 states, 7 states have (on average 418.85714285714283) internal successors, (2932), 7 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:43,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:43,674 INFO L93 Difference]: Finished difference Result 60060 states and 100096 transitions. [2023-12-25 22:41:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:41:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 418.85714285714283) internal successors, (2932), 7 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2932 [2023-12-25 22:41:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:43,720 INFO L225 Difference]: With dead ends: 60060 [2023-12-25 22:41:43,721 INFO L226 Difference]: Without dead ends: 46255 [2023-12-25 22:41:43,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2937 GetRequests, 2926 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:41:43,741 INFO L413 NwaCegarLoop]: 18860 mSDtfsCounter, 17124 mSDsluCounter, 58677 mSDsCounter, 0 mSdLazyCounter, 13866 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17124 SdHoareTripleChecker+Valid, 77537 SdHoareTripleChecker+Invalid, 13869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:43,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17124 Valid, 77537 Invalid, 13869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13866 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 22:41:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46255 states. [2023-12-25 22:41:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46255 to 15711. [2023-12-25 22:41:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15711 states, 15710 states have (on average 1.6657542966263525) internal successors, (26169), 15710 states have internal predecessors, (26169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 26169 transitions. [2023-12-25 22:41:44,147 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 26169 transitions. Word has length 2932 [2023-12-25 22:41:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:44,148 INFO L495 AbstractCegarLoop]: Abstraction has 15711 states and 26169 transitions. [2023-12-25 22:41:44,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 418.85714285714283) internal successors, (2932), 7 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 26169 transitions. [2023-12-25 22:41:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2934 [2023-12-25 22:41:44,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:44,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:44,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:44,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-25 22:41:44,396 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:44,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1178725795, now seen corresponding path program 1 times [2023-12-25 22:41:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:44,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422612946] [2023-12-25 22:41:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:44,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:44,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852643971] [2023-12-25 22:41:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:44,585 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) [2023-12-25 22:41:44,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 22:41:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:47,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 13025 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:41:47,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:52,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:41:52,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422612946] [2023-12-25 22:41:52,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852643971] [2023-12-25 22:41:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852643971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:41:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:41:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:41:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124958336] [2023-12-25 22:41:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:52,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:41:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:41:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:41:52,693 INFO L87 Difference]: Start difference. First operand 15711 states and 26169 transitions. Second operand has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:59,495 INFO L93 Difference]: Finished difference Result 60088 states and 100130 transitions. [2023-12-25 22:41:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:41:59,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2933 [2023-12-25 22:41:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:59,538 INFO L225 Difference]: With dead ends: 60088 [2023-12-25 22:41:59,538 INFO L226 Difference]: Without dead ends: 46255 [2023-12-25 22:41:59,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2938 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:41:59,558 INFO L413 NwaCegarLoop]: 13574 mSDtfsCounter, 18847 mSDsluCounter, 45462 mSDsCounter, 0 mSdLazyCounter, 11654 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18847 SdHoareTripleChecker+Valid, 59036 SdHoareTripleChecker+Invalid, 11657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:59,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18847 Valid, 59036 Invalid, 11657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11654 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 22:41:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46255 states. [2023-12-25 22:41:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46255 to 22577. [2023-12-25 22:41:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22577 states, 22576 states have (on average 1.6662384833451453) internal successors, (37617), 22576 states have internal predecessors, (37617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22577 states to 22577 states and 37617 transitions. [2023-12-25 22:41:59,859 INFO L78 Accepts]: Start accepts. Automaton has 22577 states and 37617 transitions. Word has length 2933 [2023-12-25 22:41:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:59,860 INFO L495 AbstractCegarLoop]: Abstraction has 22577 states and 37617 transitions. [2023-12-25 22:41:59,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:41:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 22577 states and 37617 transitions. [2023-12-25 22:42:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2934 [2023-12-25 22:42:00,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:00,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:00,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:00,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 22:42:00,367 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:00,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1208637857, now seen corresponding path program 1 times [2023-12-25 22:42:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662604315] [2023-12-25 22:42:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:00,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:00,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911434007] [2023-12-25 22:42:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:00,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:00,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:00,548 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) [2023-12-25 22:42:00,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 22:42:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:03,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 13026 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:42:03,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:08,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:42:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662604315] [2023-12-25 22:42:08,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911434007] [2023-12-25 22:42:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911434007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:42:08,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:42:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:42:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975721480] [2023-12-25 22:42:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:08,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:42:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:42:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:42:08,775 INFO L87 Difference]: Start difference. First operand 22577 states and 37617 transitions. Second operand has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:15,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:15,599 INFO L93 Difference]: Finished difference Result 94566 states and 157614 transitions. [2023-12-25 22:42:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:42:15,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2933 [2023-12-25 22:42:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:15,668 INFO L225 Difference]: With dead ends: 94566 [2023-12-25 22:42:15,668 INFO L226 Difference]: Without dead ends: 73867 [2023-12-25 22:42:15,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2938 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:42:15,698 INFO L413 NwaCegarLoop]: 13572 mSDtfsCounter, 20704 mSDsluCounter, 45459 mSDsCounter, 0 mSdLazyCounter, 11666 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20704 SdHoareTripleChecker+Valid, 59031 SdHoareTripleChecker+Invalid, 11669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:15,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20704 Valid, 59031 Invalid, 11669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11666 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 22:42:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73867 states. [2023-12-25 22:42:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73867 to 22651. [2023-12-25 22:42:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22651 states, 22650 states have (on average 1.6661810154525387) internal successors, (37739), 22650 states have internal predecessors, (37739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22651 states to 22651 states and 37739 transitions. [2023-12-25 22:42:16,113 INFO L78 Accepts]: Start accepts. Automaton has 22651 states and 37739 transitions. Word has length 2933 [2023-12-25 22:42:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:16,114 INFO L495 AbstractCegarLoop]: Abstraction has 22651 states and 37739 transitions. [2023-12-25 22:42:16,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 22651 states and 37739 transitions. [2023-12-25 22:42:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2934 [2023-12-25 22:42:16,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:16,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:16,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:16,380 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:16,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1146936605, now seen corresponding path program 1 times [2023-12-25 22:42:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541430209] [2023-12-25 22:42:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:16,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:16,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073405796] [2023-12-25 22:42:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:16,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:16,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:16,559 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) [2023-12-25 22:42:16,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 22:42:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:19,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 13027 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:42:19,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:24,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:42:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541430209] [2023-12-25 22:42:24,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073405796] [2023-12-25 22:42:24,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073405796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:42:24,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:42:24,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:42:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559041595] [2023-12-25 22:42:24,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:42:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:42:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:42:24,434 INFO L87 Difference]: Start difference. First operand 22651 states and 37739 transitions. Second operand has 6 states, 6 states have (on average 488.8333333333333) internal successors, (2933), 6 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:27,582 INFO L93 Difference]: Finished difference Result 58408 states and 97344 transitions. [2023-12-25 22:42:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:42:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 488.8333333333333) internal successors, (2933), 6 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2933 [2023-12-25 22:42:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:27,616 INFO L225 Difference]: With dead ends: 58408 [2023-12-25 22:42:27,616 INFO L226 Difference]: Without dead ends: 37649 [2023-12-25 22:42:27,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2934 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:42:27,634 INFO L413 NwaCegarLoop]: 5821 mSDtfsCounter, 11877 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11877 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:27,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11877 Valid, 23262 Invalid, 5364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 22:42:27,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37649 states. [2023-12-25 22:42:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37649 to 29515. [2023-12-25 22:42:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29515 states, 29514 states have (on average 1.666497255539744) internal successors, (49185), 29514 states have internal predecessors, (49185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29515 states to 29515 states and 49185 transitions. [2023-12-25 22:42:27,918 INFO L78 Accepts]: Start accepts. Automaton has 29515 states and 49185 transitions. Word has length 2933 [2023-12-25 22:42:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:27,919 INFO L495 AbstractCegarLoop]: Abstraction has 29515 states and 49185 transitions. [2023-12-25 22:42:27,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 488.8333333333333) internal successors, (2933), 6 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 29515 states and 49185 transitions. [2023-12-25 22:42:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2935 [2023-12-25 22:42:27,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:27,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:27,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-25 22:42:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-25 22:42:28,167 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:28,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash -227574839, now seen corresponding path program 1 times [2023-12-25 22:42:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102220034] [2023-12-25 22:42:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:28,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:28,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611445142] [2023-12-25 22:42:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:28,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:28,345 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:28,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 22:42:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:31,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 13028 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:42:31,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:36,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:42:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102220034] [2023-12-25 22:42:36,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611445142] [2023-12-25 22:42:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611445142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:42:36,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:42:36,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:42:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646181771] [2023-12-25 22:42:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:36,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:42:36,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:42:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:42:36,388 INFO L87 Difference]: Start difference. First operand 29515 states and 49185 transitions. Second operand has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:43,212 INFO L93 Difference]: Finished difference Result 101486 states and 169148 transitions. [2023-12-25 22:42:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:42:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2934 [2023-12-25 22:42:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:43,279 INFO L225 Difference]: With dead ends: 101486 [2023-12-25 22:42:43,279 INFO L226 Difference]: Without dead ends: 73863 [2023-12-25 22:42:43,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:42:43,310 INFO L413 NwaCegarLoop]: 13562 mSDtfsCounter, 20650 mSDsluCounter, 45434 mSDsCounter, 0 mSdLazyCounter, 11624 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20650 SdHoareTripleChecker+Valid, 58996 SdHoareTripleChecker+Invalid, 11627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:43,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20650 Valid, 58996 Invalid, 11627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11624 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 22:42:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73863 states. [2023-12-25 22:42:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73863 to 36393. [2023-12-25 22:42:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36393 states, 36392 states have (on average 1.6665475928775555) internal successors, (60649), 36392 states have internal predecessors, (60649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36393 states to 36393 states and 60649 transitions. [2023-12-25 22:42:43,742 INFO L78 Accepts]: Start accepts. Automaton has 36393 states and 60649 transitions. Word has length 2934 [2023-12-25 22:42:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:43,743 INFO L495 AbstractCegarLoop]: Abstraction has 36393 states and 60649 transitions. [2023-12-25 22:42:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 36393 states and 60649 transitions. [2023-12-25 22:42:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2935 [2023-12-25 22:42:43,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:43,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:43,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:43,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 22:42:43,992 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:43,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1154848761, now seen corresponding path program 1 times [2023-12-25 22:42:43,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:43,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160511561] [2023-12-25 22:42:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:43,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:44,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:44,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537126908] [2023-12-25 22:42:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:44,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:44,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:44,173 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:44,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 22:42:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:47,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 13029 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:42:47,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:52,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:42:52,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:52,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160511561] [2023-12-25 22:42:52,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:52,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537126908] [2023-12-25 22:42:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537126908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:42:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:42:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:42:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464607755] [2023-12-25 22:42:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:42:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:42:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:42:52,017 INFO L87 Difference]: Start difference. First operand 36393 states and 60649 transitions. Second operand has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:59,001 INFO L93 Difference]: Finished difference Result 122144 states and 203572 transitions. [2023-12-25 22:42:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:42:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2934 [2023-12-25 22:42:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:59,072 INFO L225 Difference]: With dead ends: 122144 [2023-12-25 22:42:59,072 INFO L226 Difference]: Without dead ends: 87643 [2023-12-25 22:42:59,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:42:59,095 INFO L413 NwaCegarLoop]: 13560 mSDtfsCounter, 18899 mSDsluCounter, 45431 mSDsCounter, 0 mSdLazyCounter, 11636 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18899 SdHoareTripleChecker+Valid, 58991 SdHoareTripleChecker+Invalid, 11639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:59,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18899 Valid, 58991 Invalid, 11639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11636 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-25 22:42:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87643 states. [2023-12-25 22:42:59,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87643 to 29527. [2023-12-25 22:42:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29527 states, 29526 states have (on average 1.666361850572377) internal successors, (49201), 29526 states have internal predecessors, (49201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29527 states to 29527 states and 49201 transitions. [2023-12-25 22:42:59,558 INFO L78 Accepts]: Start accepts. Automaton has 29527 states and 49201 transitions. Word has length 2934 [2023-12-25 22:42:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:59,560 INFO L495 AbstractCegarLoop]: Abstraction has 29527 states and 49201 transitions. [2023-12-25 22:42:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:42:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 29527 states and 49201 transitions. [2023-12-25 22:42:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2935 [2023-12-25 22:42:59,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:59,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:59,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:59,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:59,818 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:59,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1433602187, now seen corresponding path program 1 times [2023-12-25 22:42:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:59,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196831336] [2023-12-25 22:42:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:00,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:00,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041564945] [2023-12-25 22:43:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:00,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:00,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:00,192 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:00,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 22:43:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:03,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 13031 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:43:03,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:08,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:43:08,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196831336] [2023-12-25 22:43:08,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:08,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041564945] [2023-12-25 22:43:08,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041564945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:43:08,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:43:08,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:43:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677603560] [2023-12-25 22:43:08,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:08,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:43:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:43:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:43:08,008 INFO L87 Difference]: Start difference. First operand 29527 states and 49201 transitions. Second operand has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:11,165 INFO L93 Difference]: Finished difference Result 65308 states and 108836 transitions. [2023-12-25 22:43:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:43:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2934 [2023-12-25 22:43:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:11,201 INFO L225 Difference]: With dead ends: 65308 [2023-12-25 22:43:11,201 INFO L226 Difference]: Without dead ends: 37673 [2023-12-25 22:43:11,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2935 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:43:11,224 INFO L413 NwaCegarLoop]: 5821 mSDtfsCounter, 9014 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9014 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:11,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9014 Valid, 23262 Invalid, 5364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 22:43:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37673 states. [2023-12-25 22:43:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37673 to 29539. [2023-12-25 22:43:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29539 states, 29538 states have (on average 1.6662942650145576) internal successors, (49219), 29538 states have internal predecessors, (49219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29539 states to 29539 states and 49219 transitions. [2023-12-25 22:43:11,537 INFO L78 Accepts]: Start accepts. Automaton has 29539 states and 49219 transitions. Word has length 2934 [2023-12-25 22:43:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:11,539 INFO L495 AbstractCegarLoop]: Abstraction has 29539 states and 49219 transitions. [2023-12-25 22:43:11,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 29539 states and 49219 transitions. [2023-12-25 22:43:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2936 [2023-12-25 22:43:11,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:11,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:11,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:11,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:11,910 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:11,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash -817963223, now seen corresponding path program 1 times [2023-12-25 22:43:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:11,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631665776] [2023-12-25 22:43:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:11,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:12,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:12,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254839185] [2023-12-25 22:43:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:12,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:12,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:12,192 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:12,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 22:43:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:15,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 13031 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:43:15,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:17,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:43:17,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631665776] [2023-12-25 22:43:17,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254839185] [2023-12-25 22:43:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254839185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:43:17,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:43:17,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:43:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501087918] [2023-12-25 22:43:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:43:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:43:17,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:43:17,416 INFO L87 Difference]: Start difference. First operand 29539 states and 49219 transitions. Second operand has 7 states, 7 states have (on average 419.2857142857143) internal successors, (2935), 7 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:22,964 INFO L93 Difference]: Finished difference Result 94521 states and 157516 transitions. [2023-12-25 22:43:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:43:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.2857142857143) internal successors, (2935), 7 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2935 [2023-12-25 22:43:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:23,024 INFO L225 Difference]: With dead ends: 94521 [2023-12-25 22:43:23,025 INFO L226 Difference]: Without dead ends: 65433 [2023-12-25 22:43:23,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2937 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:43:23,041 INFO L413 NwaCegarLoop]: 13756 mSDtfsCounter, 16563 mSDsluCounter, 42770 mSDsCounter, 0 mSdLazyCounter, 9726 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16563 SdHoareTripleChecker+Valid, 56526 SdHoareTripleChecker+Invalid, 9729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:23,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16563 Valid, 56526 Invalid, 9729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 9726 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-25 22:43:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65433 states. [2023-12-25 22:43:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65433 to 33329. [2023-12-25 22:43:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33329 states, 33328 states have (on average 1.6661665866538646) internal successors, (55530), 33328 states have internal predecessors, (55530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33329 states to 33329 states and 55530 transitions. [2023-12-25 22:43:23,422 INFO L78 Accepts]: Start accepts. Automaton has 33329 states and 55530 transitions. Word has length 2935 [2023-12-25 22:43:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:23,422 INFO L495 AbstractCegarLoop]: Abstraction has 33329 states and 55530 transitions. [2023-12-25 22:43:23,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.2857142857143) internal successors, (2935), 7 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 33329 states and 55530 transitions. [2023-12-25 22:43:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2937 [2023-12-25 22:43:23,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:23,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:23,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:23,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:23,865 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:23,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -287181763, now seen corresponding path program 1 times [2023-12-25 22:43:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775132041] [2023-12-25 22:43:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:24,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:24,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967748424] [2023-12-25 22:43:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:24,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:24,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:24,144 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:24,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 22:43:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:27,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 13034 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:43:27,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:31,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:43:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775132041] [2023-12-25 22:43:31,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967748424] [2023-12-25 22:43:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967748424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:43:31,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:43:31,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 22:43:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680972083] [2023-12-25 22:43:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:31,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:43:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:43:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:43:31,653 INFO L87 Difference]: Start difference. First operand 33329 states and 55530 transitions. Second operand has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:39,272 INFO L93 Difference]: Finished difference Result 83590 states and 139245 transitions. [2023-12-25 22:43:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 22:43:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2936 [2023-12-25 22:43:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:39,320 INFO L225 Difference]: With dead ends: 83590 [2023-12-25 22:43:39,321 INFO L226 Difference]: Without dead ends: 52153 [2023-12-25 22:43:39,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2946 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2023-12-25 22:43:39,347 INFO L413 NwaCegarLoop]: 17109 mSDtfsCounter, 42713 mSDsluCounter, 73126 mSDsCounter, 0 mSdLazyCounter, 12566 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42713 SdHoareTripleChecker+Valid, 90235 SdHoareTripleChecker+Invalid, 12622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 12566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:39,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42713 Valid, 90235 Invalid, 12622 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [56 Valid, 12566 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 22:43:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52153 states. [2023-12-25 22:43:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52153 to 34727. [2023-12-25 22:43:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34727 states, 34726 states have (on average 1.6660715314173817) internal successors, (57856), 34726 states have internal predecessors, (57856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34727 states to 34727 states and 57856 transitions. [2023-12-25 22:43:39,825 INFO L78 Accepts]: Start accepts. Automaton has 34727 states and 57856 transitions. Word has length 2936 [2023-12-25 22:43:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:39,826 INFO L495 AbstractCegarLoop]: Abstraction has 34727 states and 57856 transitions. [2023-12-25 22:43:39,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 34727 states and 57856 transitions. [2023-12-25 22:43:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2937 [2023-12-25 22:43:39,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:39,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:39,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-25 22:43:40,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:40,080 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:40,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash 430396667, now seen corresponding path program 1 times [2023-12-25 22:43:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:40,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333816925] [2023-12-25 22:43:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:40,262 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362505678] [2023-12-25 22:43:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:40,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:40,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:40,264 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:40,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 22:43:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:43,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 13035 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:43:43,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:48,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:43:48,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333816925] [2023-12-25 22:43:48,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362505678] [2023-12-25 22:43:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362505678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:43:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:43:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 22:43:48,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093588871] [2023-12-25 22:43:48,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:48,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 22:43:48,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 22:43:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:48,112 INFO L87 Difference]: Start difference. First operand 34727 states and 57856 transitions. Second operand has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 10 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:55,297 INFO L93 Difference]: Finished difference Result 83823 states and 139627 transitions. [2023-12-25 22:43:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:43:55,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 10 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2936 [2023-12-25 22:43:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:55,342 INFO L225 Difference]: With dead ends: 83823 [2023-12-25 22:43:55,342 INFO L226 Difference]: Without dead ends: 52386 [2023-12-25 22:43:55,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2926 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-12-25 22:43:55,367 INFO L413 NwaCegarLoop]: 14055 mSDtfsCounter, 43824 mSDsluCounter, 57132 mSDsCounter, 0 mSdLazyCounter, 11822 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43824 SdHoareTripleChecker+Valid, 71187 SdHoareTripleChecker+Invalid, 11878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 11822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:55,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43824 Valid, 71187 Invalid, 11878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 11822 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-25 22:43:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52386 states. [2023-12-25 22:43:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52386 to 35447. [2023-12-25 22:43:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35447 states, 35446 states have (on average 1.666027196298595) internal successors, (59054), 35446 states have internal predecessors, (59054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35447 states to 35447 states and 59054 transitions. [2023-12-25 22:43:55,725 INFO L78 Accepts]: Start accepts. Automaton has 35447 states and 59054 transitions. Word has length 2936 [2023-12-25 22:43:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:55,726 INFO L495 AbstractCegarLoop]: Abstraction has 35447 states and 59054 transitions. [2023-12-25 22:43:55,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 10 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:43:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 35447 states and 59054 transitions. [2023-12-25 22:43:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2937 [2023-12-25 22:43:55,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:55,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:55,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:55,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-25 22:43:55,976 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:55,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:55,977 INFO L85 PathProgramCache]: Analyzing trace with hash 970225209, now seen corresponding path program 1 times [2023-12-25 22:43:55,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:55,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326625669] [2023-12-25 22:43:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:55,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:56,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:56,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97181740] [2023-12-25 22:43:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:56,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:56,381 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:56,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 22:43:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:59,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 13036 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 22:43:59,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:04,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:44:04,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326625669] [2023-12-25 22:44:04,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97181740] [2023-12-25 22:44:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97181740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:44:04,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:44:04,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 22:44:04,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816013985] [2023-12-25 22:44:04,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:44:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:44:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:44:04,085 INFO L87 Difference]: Start difference. First operand 35447 states and 59054 transitions. Second operand has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:10,703 INFO L93 Difference]: Finished difference Result 90328 states and 150460 transitions. [2023-12-25 22:44:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 22:44:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2936 [2023-12-25 22:44:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:10,757 INFO L225 Difference]: With dead ends: 90328 [2023-12-25 22:44:10,757 INFO L226 Difference]: Without dead ends: 58891 [2023-12-25 22:44:10,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2946 GetRequests, 2927 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2023-12-25 22:44:10,784 INFO L413 NwaCegarLoop]: 17109 mSDtfsCounter, 42614 mSDsluCounter, 67426 mSDsCounter, 0 mSdLazyCounter, 11327 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42614 SdHoareTripleChecker+Valid, 84535 SdHoareTripleChecker+Invalid, 11383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 11327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:10,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42614 Valid, 84535 Invalid, 11383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 11327 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-25 22:44:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58891 states. [2023-12-25 22:44:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58891 to 35447. [2023-12-25 22:44:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35447 states, 35446 states have (on average 1.666027196298595) internal successors, (59054), 35446 states have internal predecessors, (59054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35447 states to 35447 states and 59054 transitions. [2023-12-25 22:44:11,287 INFO L78 Accepts]: Start accepts. Automaton has 35447 states and 59054 transitions. Word has length 2936 [2023-12-25 22:44:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:11,288 INFO L495 AbstractCegarLoop]: Abstraction has 35447 states and 59054 transitions. [2023-12-25 22:44:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 293.6) internal successors, (2936), 9 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 35447 states and 59054 transitions. [2023-12-25 22:44:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2937 [2023-12-25 22:44:11,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:11,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:11,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:11,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:11,560 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:11,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1583241285, now seen corresponding path program 1 times [2023-12-25 22:44:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568596896] [2023-12-25 22:44:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:11,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:11,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422385897] [2023-12-25 22:44:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:11,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:11,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:11,726 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:11,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-25 22:44:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:15,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 13037 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 22:44:15,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:21,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:44:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:21,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568596896] [2023-12-25 22:44:21,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:21,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422385897] [2023-12-25 22:44:21,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422385897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:44:21,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:44:21,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:44:21,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372349249] [2023-12-25 22:44:21,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 22:44:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 22:44:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:44:21,038 INFO L87 Difference]: Start difference. First operand 35447 states and 59054 transitions. Second operand has 8 states, 8 states have (on average 367.0) internal successors, (2936), 7 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:25,706 INFO L93 Difference]: Finished difference Result 78218 states and 130296 transitions. [2023-12-25 22:44:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:44:25,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 367.0) internal successors, (2936), 7 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2936 [2023-12-25 22:44:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:25,744 INFO L225 Difference]: With dead ends: 78218 [2023-12-25 22:44:25,744 INFO L226 Difference]: Without dead ends: 46781 [2023-12-25 22:44:25,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2940 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:44:25,767 INFO L413 NwaCegarLoop]: 11002 mSDtfsCounter, 31753 mSDsluCounter, 36474 mSDsCounter, 0 mSdLazyCounter, 6700 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31753 SdHoareTripleChecker+Valid, 47476 SdHoareTripleChecker+Invalid, 6755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 6700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:25,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31753 Valid, 47476 Invalid, 6755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 6700 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 22:44:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46781 states. [2023-12-25 22:44:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46781 to 36361. [2023-12-25 22:44:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36361 states, 36360 states have (on average 1.6660616061606162) internal successors, (60578), 36360 states have internal predecessors, (60578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36361 states to 36361 states and 60578 transitions. [2023-12-25 22:44:26,132 INFO L78 Accepts]: Start accepts. Automaton has 36361 states and 60578 transitions. Word has length 2936 [2023-12-25 22:44:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:26,133 INFO L495 AbstractCegarLoop]: Abstraction has 36361 states and 60578 transitions. [2023-12-25 22:44:26,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.0) internal successors, (2936), 7 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 36361 states and 60578 transitions. [2023-12-25 22:44:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2938 [2023-12-25 22:44:26,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:26,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:26,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:26,383 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:26,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash -367749179, now seen corresponding path program 1 times [2023-12-25 22:44:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000674635] [2023-12-25 22:44:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:26,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642003131] [2023-12-25 22:44:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:26,703 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:26,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-25 22:44:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:29,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 13037 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 22:44:29,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:31,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:44:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000674635] [2023-12-25 22:44:31,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642003131] [2023-12-25 22:44:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642003131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:44:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:44:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:44:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623378063] [2023-12-25 22:44:31,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:31,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:44:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:44:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:44:31,206 INFO L87 Difference]: Start difference. First operand 36361 states and 60578 transitions. Second operand has 7 states, 7 states have (on average 419.57142857142856) internal successors, (2937), 7 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:38,109 INFO L93 Difference]: Finished difference Result 136175 states and 226882 transitions. [2023-12-25 22:44:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:44:38,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.57142857142856) internal successors, (2937), 7 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2937 [2023-12-25 22:44:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:38,198 INFO L225 Difference]: With dead ends: 136175 [2023-12-25 22:44:38,198 INFO L226 Difference]: Without dead ends: 104624 [2023-12-25 22:44:38,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2942 GetRequests, 2931 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:44:38,215 INFO L413 NwaCegarLoop]: 17647 mSDtfsCounter, 16056 mSDsluCounter, 55644 mSDsCounter, 0 mSdLazyCounter, 12744 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16056 SdHoareTripleChecker+Valid, 73291 SdHoareTripleChecker+Invalid, 12747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:38,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16056 Valid, 73291 Invalid, 12747 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 12744 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 22:44:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104624 states. [2023-12-25 22:44:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104624 to 36529. [2023-12-25 22:44:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36529 states, 36528 states have (on average 1.6655168637757336) internal successors, (60838), 36528 states have internal predecessors, (60838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36529 states to 36529 states and 60838 transitions. [2023-12-25 22:44:38,940 INFO L78 Accepts]: Start accepts. Automaton has 36529 states and 60838 transitions. Word has length 2937 [2023-12-25 22:44:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:38,945 INFO L495 AbstractCegarLoop]: Abstraction has 36529 states and 60838 transitions. [2023-12-25 22:44:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.57142857142856) internal successors, (2937), 7 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 36529 states and 60838 transitions. [2023-12-25 22:44:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2939 [2023-12-25 22:44:39,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:39,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:39,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-25 22:44:39,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-25 22:44:39,309 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:39,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 849599483, now seen corresponding path program 1 times [2023-12-25 22:44:39,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044925855] [2023-12-25 22:44:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:39,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902441186] [2023-12-25 22:44:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:39,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:39,549 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:39,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-25 22:44:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:42,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 13040 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:44:42,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:47,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:44:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:47,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044925855] [2023-12-25 22:44:47,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:47,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902441186] [2023-12-25 22:44:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902441186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:44:47,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:44:47,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:44:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743154467] [2023-12-25 22:44:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:47,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:44:47,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:44:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:44:47,035 INFO L87 Difference]: Start difference. First operand 36529 states and 60838 transitions. Second operand has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:53,682 INFO L93 Difference]: Finished difference Result 136229 states and 226936 transitions. [2023-12-25 22:44:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:44:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2938 [2023-12-25 22:44:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:53,780 INFO L225 Difference]: With dead ends: 136229 [2023-12-25 22:44:53,780 INFO L226 Difference]: Without dead ends: 104624 [2023-12-25 22:44:53,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2932 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:44:53,818 INFO L413 NwaCegarLoop]: 13167 mSDtfsCounter, 18896 mSDsluCounter, 44444 mSDsCounter, 0 mSdLazyCounter, 11568 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18896 SdHoareTripleChecker+Valid, 57611 SdHoareTripleChecker+Invalid, 11571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:53,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18896 Valid, 57611 Invalid, 11571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11568 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 22:44:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104624 states. [2023-12-25 22:44:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104624 to 51923. [2023-12-25 22:44:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51923 states, 51922 states have (on average 1.6657293632756827) internal successors, (86488), 51922 states have internal predecessors, (86488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51923 states to 51923 states and 86488 transitions. [2023-12-25 22:44:54,686 INFO L78 Accepts]: Start accepts. Automaton has 51923 states and 86488 transitions. Word has length 2938 [2023-12-25 22:44:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:54,687 INFO L495 AbstractCegarLoop]: Abstraction has 51923 states and 86488 transitions. [2023-12-25 22:44:54,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:44:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 51923 states and 86488 transitions. [2023-12-25 22:44:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2939 [2023-12-25 22:44:54,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:54,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:54,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:54,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 22:44:54,964 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:54,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1505973499, now seen corresponding path program 1 times [2023-12-25 22:44:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215082759] [2023-12-25 22:44:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:55,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:55,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026090568] [2023-12-25 22:44:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:55,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:55,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:55,261 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:55,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-25 22:44:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:58,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 13044 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:44:58,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:02,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:45:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215082759] [2023-12-25 22:45:02,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026090568] [2023-12-25 22:45:02,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026090568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:45:02,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:45:02,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:45:02,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602869287] [2023-12-25 22:45:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:45:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:45:02,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:45:02,608 INFO L87 Difference]: Start difference. First operand 51923 states and 86488 transitions. Second operand has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:09,329 INFO L93 Difference]: Finished difference Result 213675 states and 355966 transitions. [2023-12-25 22:45:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:45:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2938 [2023-12-25 22:45:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:09,488 INFO L225 Difference]: With dead ends: 213675 [2023-12-25 22:45:09,488 INFO L226 Difference]: Without dead ends: 166676 [2023-12-25 22:45:09,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2932 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:09,552 INFO L413 NwaCegarLoop]: 13165 mSDtfsCounter, 17491 mSDsluCounter, 44441 mSDsCounter, 0 mSdLazyCounter, 11580 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17491 SdHoareTripleChecker+Valid, 57606 SdHoareTripleChecker+Invalid, 11583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:09,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17491 Valid, 57606 Invalid, 11583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11580 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 22:45:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166676 states. [2023-12-25 22:45:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166676 to 52131. [2023-12-25 22:45:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52131 states, 52130 states have (on average 1.6656819489737196) internal successors, (86832), 52130 states have internal predecessors, (86832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52131 states to 52131 states and 86832 transitions. [2023-12-25 22:45:10,756 INFO L78 Accepts]: Start accepts. Automaton has 52131 states and 86832 transitions. Word has length 2938 [2023-12-25 22:45:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:10,757 INFO L495 AbstractCegarLoop]: Abstraction has 52131 states and 86832 transitions. [2023-12-25 22:45:10,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.7142857142857) internal successors, (2938), 7 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 52131 states and 86832 transitions. [2023-12-25 22:45:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2939 [2023-12-25 22:45:10,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:10,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:45:10,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-25 22:45:11,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 22:45:11,037 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:11,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1784032583, now seen corresponding path program 1 times [2023-12-25 22:45:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:11,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311959028] [2023-12-25 22:45:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:11,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:11,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29404341] [2023-12-25 22:45:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:11,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:11,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:11,305 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:11,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-25 22:45:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:14,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 13045 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:45:14,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:18,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:45:18,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311959028] [2023-12-25 22:45:18,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29404341] [2023-12-25 22:45:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29404341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:45:18,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:45:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:45:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210576570] [2023-12-25 22:45:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:45:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:45:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:45:18,391 INFO L87 Difference]: Start difference. First operand 52131 states and 86832 transitions. Second operand has 6 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:21,568 INFO L93 Difference]: Finished difference Result 131106 states and 218417 transitions. [2023-12-25 22:45:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:45:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2938 [2023-12-25 22:45:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:21,643 INFO L225 Difference]: With dead ends: 131106 [2023-12-25 22:45:21,643 INFO L226 Difference]: Without dead ends: 83927 [2023-12-25 22:45:21,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:45:21,683 INFO L413 NwaCegarLoop]: 5821 mSDtfsCounter, 8168 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8168 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:21,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8168 Valid, 23262 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 22:45:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83927 states. [2023-12-25 22:45:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83927 to 67523. [2023-12-25 22:45:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67523 states, 67522 states have (on average 1.665827434021504) internal successors, (112480), 67522 states have internal predecessors, (112480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67523 states to 67523 states and 112480 transitions. [2023-12-25 22:45:22,677 INFO L78 Accepts]: Start accepts. Automaton has 67523 states and 112480 transitions. Word has length 2938 [2023-12-25 22:45:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:22,678 INFO L495 AbstractCegarLoop]: Abstraction has 67523 states and 112480 transitions. [2023-12-25 22:45:22,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 489.6666666666667) internal successors, (2938), 6 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 67523 states and 112480 transitions. [2023-12-25 22:45:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2940 [2023-12-25 22:45:22,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:22,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:45:22,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:23,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-25 22:45:23,109 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:23,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash -641232627, now seen corresponding path program 1 times [2023-12-25 22:45:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:23,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009572513] [2023-12-25 22:45:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:23,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:23,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050217421] [2023-12-25 22:45:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:23,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:23,445 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:23,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-25 22:45:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:26,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 13043 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:45:26,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:30,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:45:30,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009572513] [2023-12-25 22:45:30,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050217421] [2023-12-25 22:45:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050217421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:45:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:45:30,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:45:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475070150] [2023-12-25 22:45:30,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:45:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:45:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:45:30,811 INFO L87 Difference]: Start difference. First operand 67523 states and 112480 transitions. Second operand has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:37,587 INFO L93 Difference]: Finished difference Result 229183 states and 381810 transitions. [2023-12-25 22:45:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:45:37,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2939 [2023-12-25 22:45:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:37,742 INFO L225 Difference]: With dead ends: 229183 [2023-12-25 22:45:37,742 INFO L226 Difference]: Without dead ends: 166612 [2023-12-25 22:45:37,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:37,813 INFO L413 NwaCegarLoop]: 13155 mSDtfsCounter, 18900 mSDsluCounter, 44416 mSDsCounter, 0 mSdLazyCounter, 11538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18900 SdHoareTripleChecker+Valid, 57571 SdHoareTripleChecker+Invalid, 11541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:37,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18900 Valid, 57571 Invalid, 11541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11538 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 22:45:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166612 states. [2023-12-25 22:45:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166612 to 82929. [2023-12-25 22:45:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82929 states, 82928 states have (on average 1.665854717345167) internal successors, (138146), 82928 states have internal predecessors, (138146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82929 states to 82929 states and 138146 transitions. [2023-12-25 22:45:39,274 INFO L78 Accepts]: Start accepts. Automaton has 82929 states and 138146 transitions. Word has length 2939 [2023-12-25 22:45:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:39,275 INFO L495 AbstractCegarLoop]: Abstraction has 82929 states and 138146 transitions. [2023-12-25 22:45:39,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 82929 states and 138146 transitions. [2023-12-25 22:45:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2940 [2023-12-25 22:45:39,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:39,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:45:39,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:39,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:39,692 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:39,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1768474611, now seen corresponding path program 1 times [2023-12-25 22:45:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015307876] [2023-12-25 22:45:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:39,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:39,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747170886] [2023-12-25 22:45:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:39,920 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:39,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-25 22:45:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:42,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 13047 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:45:42,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:47,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:45:47,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:47,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015307876] [2023-12-25 22:45:47,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:47,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747170886] [2023-12-25 22:45:47,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747170886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:45:47,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:45:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:45:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366839637] [2023-12-25 22:45:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:47,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:45:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:45:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:45:47,094 INFO L87 Difference]: Start difference. First operand 82929 states and 138146 transitions. Second operand has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:54,003 INFO L93 Difference]: Finished difference Result 275485 states and 458932 transitions. [2023-12-25 22:45:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:45:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2939 [2023-12-25 22:45:54,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:54,195 INFO L225 Difference]: With dead ends: 275485 [2023-12-25 22:45:54,195 INFO L226 Difference]: Without dead ends: 197508 [2023-12-25 22:45:54,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:54,275 INFO L413 NwaCegarLoop]: 13153 mSDtfsCounter, 18958 mSDsluCounter, 44413 mSDsCounter, 0 mSdLazyCounter, 11550 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18958 SdHoareTripleChecker+Valid, 57566 SdHoareTripleChecker+Invalid, 11553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:54,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18958 Valid, 57566 Invalid, 11553 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11550 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 22:45:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197508 states. [2023-12-25 22:45:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197508 to 67535. [2023-12-25 22:45:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67535 states, 67534 states have (on average 1.6657683537181271) internal successors, (112496), 67534 states have internal predecessors, (112496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67535 states to 67535 states and 112496 transitions. [2023-12-25 22:45:55,745 INFO L78 Accepts]: Start accepts. Automaton has 67535 states and 112496 transitions. Word has length 2939 [2023-12-25 22:45:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:55,746 INFO L495 AbstractCegarLoop]: Abstraction has 67535 states and 112496 transitions. [2023-12-25 22:45:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:45:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 67535 states and 112496 transitions. [2023-12-25 22:45:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2940 [2023-12-25 22:45:55,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:55,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:45:55,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-25 22:45:56,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-25 22:45:56,148 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:56,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -679448049, now seen corresponding path program 1 times [2023-12-25 22:45:56,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:56,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538289014] [2023-12-25 22:45:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:56,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:56,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574146495] [2023-12-25 22:45:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:56,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:56,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:56,398 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:56,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-25 22:45:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:59,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 13048 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:45:59,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:01,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:46:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538289014] [2023-12-25 22:46:01,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:01,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574146495] [2023-12-25 22:46:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574146495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:46:01,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:46:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:46:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475584171] [2023-12-25 22:46:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:46:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:46:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:46:01,857 INFO L87 Difference]: Start difference. First operand 67535 states and 112496 transitions. Second operand has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:08,384 INFO L93 Difference]: Finished difference Result 198431 states and 330558 transitions. [2023-12-25 22:46:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:46:08,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2939 [2023-12-25 22:46:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:08,503 INFO L225 Difference]: With dead ends: 198431 [2023-12-25 22:46:08,503 INFO L226 Difference]: Without dead ends: 135848 [2023-12-25 22:46:08,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:08,554 INFO L413 NwaCegarLoop]: 13157 mSDtfsCounter, 12613 mSDsluCounter, 44419 mSDsCounter, 0 mSdLazyCounter, 11505 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12613 SdHoareTripleChecker+Valid, 57576 SdHoareTripleChecker+Invalid, 11508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:08,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12613 Valid, 57576 Invalid, 11508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11505 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-25 22:46:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135848 states. [2023-12-25 22:46:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135848 to 67535. [2023-12-25 22:46:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67535 states, 67534 states have (on average 1.6657683537181271) internal successors, (112496), 67534 states have internal predecessors, (112496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67535 states to 67535 states and 112496 transitions. [2023-12-25 22:46:09,687 INFO L78 Accepts]: Start accepts. Automaton has 67535 states and 112496 transitions. Word has length 2939 [2023-12-25 22:46:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:09,689 INFO L495 AbstractCegarLoop]: Abstraction has 67535 states and 112496 transitions. [2023-12-25 22:46:09,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.85714285714283) internal successors, (2939), 7 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 67535 states and 112496 transitions. [2023-12-25 22:46:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2940 [2023-12-25 22:46:09,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:09,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:46:09,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:10,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-25 22:46:10,070 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:10,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash -819523823, now seen corresponding path program 1 times [2023-12-25 22:46:10,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077811625] [2023-12-25 22:46:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:10,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:10,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052406255] [2023-12-25 22:46:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:10,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:10,237 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:10,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-25 22:46:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:13,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 13049 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 22:46:13,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:17,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:46:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077811625] [2023-12-25 22:46:17,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052406255] [2023-12-25 22:46:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052406255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:46:17,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:46:17,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:46:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130065521] [2023-12-25 22:46:17,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:17,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:46:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:46:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:46:17,386 INFO L87 Difference]: Start difference. First operand 67535 states and 112496 transitions. Second operand has 6 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:20,604 INFO L93 Difference]: Finished difference Result 146534 states and 244111 transitions. [2023-12-25 22:46:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:46:20,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2939 [2023-12-25 22:46:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:20,782 INFO L225 Difference]: With dead ends: 146534 [2023-12-25 22:46:20,782 INFO L226 Difference]: Without dead ends: 83951 [2023-12-25 22:46:20,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2940 GetRequests, 2934 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:46:20,791 INFO L413 NwaCegarLoop]: 5821 mSDtfsCounter, 8161 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8161 SdHoareTripleChecker+Valid, 23262 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:20,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8161 Valid, 23262 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 22:46:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83951 states. [2023-12-25 22:46:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83951 to 67547. [2023-12-25 22:46:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67547 states, 67546 states have (on average 1.6657389038581114) internal successors, (112514), 67546 states have internal predecessors, (112514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67547 states to 67547 states and 112514 transitions. [2023-12-25 22:46:21,641 INFO L78 Accepts]: Start accepts. Automaton has 67547 states and 112514 transitions. Word has length 2939 [2023-12-25 22:46:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:21,643 INFO L495 AbstractCegarLoop]: Abstraction has 67547 states and 112514 transitions. [2023-12-25 22:46:21,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 489.8333333333333) internal successors, (2939), 6 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 67547 states and 112514 transitions. [2023-12-25 22:46:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2941 [2023-12-25 22:46:21,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:21,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:46:21,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-25 22:46:21,894 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2100625031, now seen corresponding path program 1 times [2023-12-25 22:46:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112934668] [2023-12-25 22:46:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:22,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:22,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728513834] [2023-12-25 22:46:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:22,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:22,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:22,265 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:22,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-25 22:46:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:25,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 13046 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 22:46:25,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:28,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:46:28,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112934668] [2023-12-25 22:46:28,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728513834] [2023-12-25 22:46:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728513834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:46:28,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:46:28,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:46:28,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976262955] [2023-12-25 22:46:28,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:28,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:46:28,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:46:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:46:28,137 INFO L87 Difference]: Start difference. First operand 67547 states and 112514 transitions. Second operand has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:36,211 INFO L93 Difference]: Finished difference Result 289845 states and 482818 transitions. [2023-12-25 22:46:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:46:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2940 [2023-12-25 22:46:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:36,402 INFO L225 Difference]: With dead ends: 289845 [2023-12-25 22:46:36,402 INFO L226 Difference]: Without dead ends: 220648 [2023-12-25 22:46:36,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2945 GetRequests, 2934 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:36,426 INFO L413 NwaCegarLoop]: 17645 mSDtfsCounter, 21073 mSDsluCounter, 55641 mSDsCounter, 0 mSdLazyCounter, 12735 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21073 SdHoareTripleChecker+Valid, 73286 SdHoareTripleChecker+Invalid, 12738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:36,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21073 Valid, 73286 Invalid, 12738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12735 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 22:46:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220648 states. [2023-12-25 22:46:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220648 to 78799. [2023-12-25 22:46:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78799 states, 78798 states have (on average 1.665727556536968) internal successors, (131256), 78798 states have internal predecessors, (131256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78799 states to 78799 states and 131256 transitions. [2023-12-25 22:46:37,745 INFO L78 Accepts]: Start accepts. Automaton has 78799 states and 131256 transitions. Word has length 2940 [2023-12-25 22:46:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:37,745 INFO L495 AbstractCegarLoop]: Abstraction has 78799 states and 131256 transitions. [2023-12-25 22:46:37,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 78799 states and 131256 transitions. [2023-12-25 22:46:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2942 [2023-12-25 22:46:37,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:37,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:46:38,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:38,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:38,200 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:38,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2091861549, now seen corresponding path program 1 times [2023-12-25 22:46:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:38,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508913997] [2023-12-25 22:46:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:38,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:38,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692894376] [2023-12-25 22:46:38,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:38,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:38,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:38,472 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:38,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-25 22:46:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:41,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 13049 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 22:46:41,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:46,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:46:46,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508913997] [2023-12-25 22:46:46,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692894376] [2023-12-25 22:46:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692894376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:46:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:46:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 22:46:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163101194] [2023-12-25 22:46:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:46,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 22:46:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 22:46:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:46:46,741 INFO L87 Difference]: Start difference. First operand 78799 states and 131256 transitions. Second operand has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:54,429 INFO L93 Difference]: Finished difference Result 188872 states and 314509 transitions. [2023-12-25 22:46:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 22:46:54,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2941 [2023-12-25 22:46:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:54,523 INFO L225 Difference]: With dead ends: 188872 [2023-12-25 22:46:54,523 INFO L226 Difference]: Without dead ends: 115025 [2023-12-25 22:46:54,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2954 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2023-12-25 22:46:54,538 INFO L413 NwaCegarLoop]: 16115 mSDtfsCounter, 75711 mSDsluCounter, 80825 mSDsCounter, 0 mSdLazyCounter, 12669 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75711 SdHoareTripleChecker+Valid, 96940 SdHoareTripleChecker+Invalid, 12724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 12669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:54,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75711 Valid, 96940 Invalid, 12724 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 12669 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 22:46:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115025 states. [2023-12-25 22:46:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115025 to 82902. [2023-12-25 22:46:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82902 states, 82901 states have (on average 1.665552888384941) internal successors, (138076), 82901 states have internal predecessors, (138076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82902 states to 82902 states and 138076 transitions. [2023-12-25 22:46:55,687 INFO L78 Accepts]: Start accepts. Automaton has 82902 states and 138076 transitions. Word has length 2941 [2023-12-25 22:46:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:55,689 INFO L495 AbstractCegarLoop]: Abstraction has 82902 states and 138076 transitions. [2023-12-25 22:46:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:46:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 82902 states and 138076 transitions. [2023-12-25 22:46:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2942 [2023-12-25 22:46:55,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:55,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:46:55,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:55,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:55,946 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:55,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash 383486865, now seen corresponding path program 1 times [2023-12-25 22:46:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:55,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044861903] [2023-12-25 22:46:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:56,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963619305] [2023-12-25 22:46:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:56,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:56,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:56,244 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:56,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-25 22:46:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:59,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 13050 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 22:46:59,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:04,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:47:04,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044861903] [2023-12-25 22:47:04,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963619305] [2023-12-25 22:47:04,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963619305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:47:04,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:47:04,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 22:47:04,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768520236] [2023-12-25 22:47:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:04,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 22:47:04,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 22:47:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:04,718 INFO L87 Difference]: Start difference. First operand 82902 states and 138076 transitions. Second operand has 13 states, 13 states have (on average 226.23076923076923) internal successors, (2941), 12 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:12,051 INFO L93 Difference]: Finished difference Result 185922 states and 309609 transitions. [2023-12-25 22:47:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 22:47:12,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 226.23076923076923) internal successors, (2941), 12 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2941 [2023-12-25 22:47:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:12,158 INFO L225 Difference]: With dead ends: 185922 [2023-12-25 22:47:12,158 INFO L226 Difference]: Without dead ends: 112075 [2023-12-25 22:47:12,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2951 GetRequests, 2929 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-12-25 22:47:12,213 INFO L413 NwaCegarLoop]: 13559 mSDtfsCounter, 58717 mSDsluCounter, 81501 mSDsCounter, 0 mSdLazyCounter, 12885 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58717 SdHoareTripleChecker+Valid, 95060 SdHoareTripleChecker+Invalid, 12940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 12885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:12,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58717 Valid, 95060 Invalid, 12940 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 12885 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 22:47:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112075 states. [2023-12-25 22:47:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112075 to 82902. [2023-12-25 22:47:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82902 states, 82901 states have (on average 1.665552888384941) internal successors, (138076), 82901 states have internal predecessors, (138076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82902 states to 82902 states and 138076 transitions. [2023-12-25 22:47:13,509 INFO L78 Accepts]: Start accepts. Automaton has 82902 states and 138076 transitions. Word has length 2941 [2023-12-25 22:47:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 82902 states and 138076 transitions. [2023-12-25 22:47:13,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 226.23076923076923) internal successors, (2941), 12 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 82902 states and 138076 transitions. [2023-12-25 22:47:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2942 [2023-12-25 22:47:13,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:13,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:47:13,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-25 22:47:13,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-25 22:47:13,767 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:13,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash -997752557, now seen corresponding path program 1 times [2023-12-25 22:47:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:13,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694162477] [2023-12-25 22:47:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:14,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32192113] [2023-12-25 22:47:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:14,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:14,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:14,051 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:14,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-25 22:47:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:17,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 13051 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:47:17,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:22,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:47:22,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694162477] [2023-12-25 22:47:22,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32192113] [2023-12-25 22:47:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32192113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:47:22,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:47:22,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 22:47:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200727149] [2023-12-25 22:47:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 22:47:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 22:47:22,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:47:22,447 INFO L87 Difference]: Start difference. First operand 82902 states and 138076 transitions. Second operand has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:30,197 INFO L93 Difference]: Finished difference Result 194596 states and 324041 transitions. [2023-12-25 22:47:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 22:47:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2941 [2023-12-25 22:47:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:30,335 INFO L225 Difference]: With dead ends: 194596 [2023-12-25 22:47:30,336 INFO L226 Difference]: Without dead ends: 120749 [2023-12-25 22:47:30,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2954 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2023-12-25 22:47:30,400 INFO L413 NwaCegarLoop]: 16115 mSDtfsCounter, 75573 mSDsluCounter, 81019 mSDsCounter, 0 mSdLazyCounter, 12464 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75573 SdHoareTripleChecker+Valid, 97134 SdHoareTripleChecker+Invalid, 12519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 12464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:30,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75573 Valid, 97134 Invalid, 12519 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [55 Valid, 12464 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-25 22:47:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120749 states. [2023-12-25 22:47:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120749 to 82914. [2023-12-25 22:47:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82914 states, 82913 states have (on average 1.665540988747241) internal successors, (138095), 82913 states have internal predecessors, (138095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82914 states to 82914 states and 138095 transitions. [2023-12-25 22:47:31,957 INFO L78 Accepts]: Start accepts. Automaton has 82914 states and 138095 transitions. Word has length 2941 [2023-12-25 22:47:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:31,958 INFO L495 AbstractCegarLoop]: Abstraction has 82914 states and 138095 transitions. [2023-12-25 22:47:31,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:31,959 INFO L276 IsEmpty]: Start isEmpty. Operand 82914 states and 138095 transitions. [2023-12-25 22:47:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2942 [2023-12-25 22:47:32,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:32,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:47:32,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-25 22:47:32,215 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:32,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash 930881941, now seen corresponding path program 1 times [2023-12-25 22:47:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:32,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326450939] [2023-12-25 22:47:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:32,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:32,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807728235] [2023-12-25 22:47:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:32,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:32,571 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:32,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-25 22:47:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:35,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 13052 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:47:35,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:42,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:47:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326450939] [2023-12-25 22:47:42,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:42,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807728235] [2023-12-25 22:47:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807728235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:47:42,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:47:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 22:47:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059202890] [2023-12-25 22:47:42,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:42,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:47:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:47:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:47:42,267 INFO L87 Difference]: Start difference. First operand 82914 states and 138095 transitions. Second operand has 10 states, 10 states have (on average 294.1) internal successors, (2941), 9 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:47,893 INFO L93 Difference]: Finished difference Result 180997 states and 301420 transitions. [2023-12-25 22:47:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 22:47:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 294.1) internal successors, (2941), 9 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2941 [2023-12-25 22:47:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:47,995 INFO L225 Difference]: With dead ends: 180997 [2023-12-25 22:47:47,996 INFO L226 Difference]: Without dead ends: 107150 [2023-12-25 22:47:48,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2947 GetRequests, 2932 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-25 22:47:48,051 INFO L413 NwaCegarLoop]: 11003 mSDtfsCounter, 51926 mSDsluCounter, 47449 mSDsCounter, 0 mSdLazyCounter, 8594 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51926 SdHoareTripleChecker+Valid, 58452 SdHoareTripleChecker+Invalid, 8648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 8594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:48,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51926 Valid, 58452 Invalid, 8648 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 8594 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-25 22:47:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107150 states. [2023-12-25 22:47:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107150 to 85814. [2023-12-25 22:47:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85814 states, 85813 states have (on average 1.665551839464883) internal successors, (142926), 85813 states have internal predecessors, (142926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85814 states to 85814 states and 142926 transitions. [2023-12-25 22:47:49,174 INFO L78 Accepts]: Start accepts. Automaton has 85814 states and 142926 transitions. Word has length 2941 [2023-12-25 22:47:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:49,175 INFO L495 AbstractCegarLoop]: Abstraction has 85814 states and 142926 transitions. [2023-12-25 22:47:49,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 294.1) internal successors, (2941), 9 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:47:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 85814 states and 142926 transitions. [2023-12-25 22:47:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2943 [2023-12-25 22:47:49,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:49,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:47:49,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:49,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-25 22:47:49,676 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:49,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash -171237449, now seen corresponding path program 1 times [2023-12-25 22:47:49,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:49,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093224168] [2023-12-25 22:47:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:49,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:49,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:49,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340128329] [2023-12-25 22:47:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:49,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:49,984 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:49,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-25 22:47:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:53,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 13052 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 22:47:53,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:56,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:47:56,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093224168] [2023-12-25 22:47:56,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340128329] [2023-12-25 22:47:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340128329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:47:56,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:47:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:47:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998904121] [2023-12-25 22:47:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:47:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:47:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:47:56,206 INFO L87 Difference]: Start difference. First operand 85814 states and 142926 transitions. Second operand has 7 states, 7 states have (on average 420.2857142857143) internal successors, (2942), 7 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:03,385 INFO L93 Difference]: Finished difference Result 392216 states and 653304 transitions. [2023-12-25 22:48:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 22:48:03,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 420.2857142857143) internal successors, (2942), 7 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2942 [2023-12-25 22:48:03,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:03,675 INFO L225 Difference]: With dead ends: 392216 [2023-12-25 22:48:03,675 INFO L226 Difference]: Without dead ends: 308179 [2023-12-25 22:48:04,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2947 GetRequests, 2936 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:04,075 INFO L413 NwaCegarLoop]: 11528 mSDtfsCounter, 22169 mSDsluCounter, 40348 mSDsCounter, 0 mSdLazyCounter, 11356 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22169 SdHoareTripleChecker+Valid, 51876 SdHoareTripleChecker+Invalid, 11359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:04,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22169 Valid, 51876 Invalid, 11359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11356 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-25 22:48:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308179 states. [2023-12-25 22:48:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308179 to 121394. [2023-12-25 22:48:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121394 states, 121393 states have (on average 1.6657797401827124) internal successors, (202214), 121393 states have internal predecessors, (202214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121394 states to 121394 states and 202214 transitions. [2023-12-25 22:48:06,445 INFO L78 Accepts]: Start accepts. Automaton has 121394 states and 202214 transitions. Word has length 2942 [2023-12-25 22:48:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:06,445 INFO L495 AbstractCegarLoop]: Abstraction has 121394 states and 202214 transitions. [2023-12-25 22:48:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 420.2857142857143) internal successors, (2942), 7 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 121394 states and 202214 transitions. [2023-12-25 22:48:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2943 [2023-12-25 22:48:06,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:06,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:48:06,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:06,716 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:06,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1543976765, now seen corresponding path program 1 times [2023-12-25 22:48:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569701164] [2023-12-25 22:48:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:07,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199736030] [2023-12-25 22:48:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:07,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:07,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:07,015 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:07,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-25 22:48:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:10,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 13052 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:48:10,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:15,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:48:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569701164] [2023-12-25 22:48:15,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199736030] [2023-12-25 22:48:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199736030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:48:15,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:48:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 22:48:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049567802] [2023-12-25 22:48:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 22:48:15,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 22:48:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:15,389 INFO L87 Difference]: Start difference. First operand 121394 states and 202214 transitions. Second operand has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:25,095 INFO L93 Difference]: Finished difference Result 260416 states and 433752 transitions. [2023-12-25 22:48:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 22:48:25,096 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2942 [2023-12-25 22:48:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:25,223 INFO L225 Difference]: With dead ends: 260416 [2023-12-25 22:48:25,223 INFO L226 Difference]: Without dead ends: 151081 [2023-12-25 22:48:25,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2951 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-12-25 22:48:25,297 INFO L413 NwaCegarLoop]: 12003 mSDtfsCounter, 46234 mSDsluCounter, 73536 mSDsCounter, 0 mSdLazyCounter, 17439 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46234 SdHoareTripleChecker+Valid, 85539 SdHoareTripleChecker+Invalid, 17495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 17439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:25,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46234 Valid, 85539 Invalid, 17495 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [56 Valid, 17439 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-25 22:48:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151081 states. [2023-12-25 22:48:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151081 to 126533. [2023-12-25 22:48:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126533 states, 126532 states have (on average 1.6656023772642494) internal successors, (210752), 126532 states have internal predecessors, (210752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126533 states to 126533 states and 210752 transitions. [2023-12-25 22:48:27,197 INFO L78 Accepts]: Start accepts. Automaton has 126533 states and 210752 transitions. Word has length 2942 [2023-12-25 22:48:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 126533 states and 210752 transitions. [2023-12-25 22:48:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 126533 states and 210752 transitions. [2023-12-25 22:48:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2943 [2023-12-25 22:48:27,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:27,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:48:27,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-12-25 22:48:27,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:27,472 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:27,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash 162737343, now seen corresponding path program 1 times [2023-12-25 22:48:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:27,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793182712] [2023-12-25 22:48:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:27,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:27,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:27,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978985295] [2023-12-25 22:48:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:27,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:27,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:27,806 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:27,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-25 22:48:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:30,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 13053 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:48:30,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:36,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:48:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793182712] [2023-12-25 22:48:36,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978985295] [2023-12-25 22:48:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978985295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:48:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:48:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 22:48:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022541302] [2023-12-25 22:48:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 22:48:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:36,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 22:48:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:48:36,028 INFO L87 Difference]: Start difference. First operand 126533 states and 210752 transitions. Second operand has 12 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:48,062 INFO L93 Difference]: Finished difference Result 286367 states and 476915 transitions. [2023-12-25 22:48:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 22:48:48,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2942 [2023-12-25 22:48:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:48,230 INFO L225 Difference]: With dead ends: 286367 [2023-12-25 22:48:48,230 INFO L226 Difference]: Without dead ends: 179804 [2023-12-25 22:48:48,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2955 GetRequests, 2931 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2023-12-25 22:48:48,303 INFO L413 NwaCegarLoop]: 19537 mSDtfsCounter, 54357 mSDsluCounter, 98678 mSDsCounter, 0 mSdLazyCounter, 21039 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54357 SdHoareTripleChecker+Valid, 118215 SdHoareTripleChecker+Invalid, 21095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 21039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:48,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54357 Valid, 118215 Invalid, 21095 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [56 Valid, 21039 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-25 22:48:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179804 states. [2023-12-25 22:48:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179804 to 127322. [2023-12-25 22:48:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127322 states, 127321 states have (on average 1.6655461392857422) internal successors, (212059), 127321 states have internal predecessors, (212059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127322 states to 127322 states and 212059 transitions. [2023-12-25 22:48:50,198 INFO L78 Accepts]: Start accepts. Automaton has 127322 states and 212059 transitions. Word has length 2942 [2023-12-25 22:48:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:50,199 INFO L495 AbstractCegarLoop]: Abstraction has 127322 states and 212059 transitions. [2023-12-25 22:48:50,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:48:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 127322 states and 212059 transitions. [2023-12-25 22:48:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2943 [2023-12-25 22:48:50,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:50,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:48:50,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:50,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:50,465 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:50,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2091371841, now seen corresponding path program 1 times [2023-12-25 22:48:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704118221] [2023-12-25 22:48:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:50,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457264263] [2023-12-25 22:48:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:50,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:50,829 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:50,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-25 22:48:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:54,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 13054 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 22:48:54,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:59,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:48:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704118221] [2023-12-25 22:48:59,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457264263] [2023-12-25 22:48:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457264263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:48:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:48:59,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 22:48:59,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146525650] [2023-12-25 22:48:59,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:59,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 22:48:59,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:59,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 22:48:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:59,332 INFO L87 Difference]: Start difference. First operand 127322 states and 212059 transitions. Second operand has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:49:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:12,597 INFO L93 Difference]: Finished difference Result 288583 states and 480595 transitions. [2023-12-25 22:49:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 22:49:12,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2942 [2023-12-25 22:49:12,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:12,743 INFO L225 Difference]: With dead ends: 288583 [2023-12-25 22:49:12,744 INFO L226 Difference]: Without dead ends: 182020 [2023-12-25 22:49:12,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2955 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2023-12-25 22:49:12,770 INFO L413 NwaCegarLoop]: 19537 mSDtfsCounter, 53910 mSDsluCounter, 115786 mSDsCounter, 0 mSdLazyCounter, 25696 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53910 SdHoareTripleChecker+Valid, 135323 SdHoareTripleChecker+Invalid, 25752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 25696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:12,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53910 Valid, 135323 Invalid, 25752 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [56 Valid, 25696 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-25 22:49:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182020 states. [2023-12-25 22:49:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182020 to 127322. [2023-12-25 22:49:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127322 states, 127321 states have (on average 1.6655461392857422) internal successors, (212059), 127321 states have internal predecessors, (212059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:49:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127322 states to 127322 states and 212059 transitions. [2023-12-25 22:49:14,412 INFO L78 Accepts]: Start accepts. Automaton has 127322 states and 212059 transitions. Word has length 2942 [2023-12-25 22:49:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:14,413 INFO L495 AbstractCegarLoop]: Abstraction has 127322 states and 212059 transitions. [2023-12-25 22:49:14,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 226.30769230769232) internal successors, (2942), 12 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:49:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 127322 states and 212059 transitions. [2023-12-25 22:49:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2943 [2023-12-25 22:49:14,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:14,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:49:14,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-25 22:49:15,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-12-25 22:49:15,012 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:15,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash 271752959, now seen corresponding path program 1 times [2023-12-25 22:49:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:15,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379693297] [2023-12-25 22:49:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:15,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635686451] [2023-12-25 22:49:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:15,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:15,188 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:15,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-25 22:49:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:18,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 13055 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 22:49:18,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:25,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:49:25,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379693297] [2023-12-25 22:49:25,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635686451] [2023-12-25 22:49:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635686451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:49:25,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:49:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 22:49:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411458667] [2023-12-25 22:49:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:25,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:49:25,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:25,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:49:25,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-25 22:49:25,274 INFO L87 Difference]: Start difference. First operand 127322 states and 212059 transitions. Second operand has 10 states, 10 states have (on average 294.2) internal successors, (2942), 9 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:49:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:33,117 INFO L93 Difference]: Finished difference Result 267225 states and 445073 transitions. [2023-12-25 22:49:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 22:49:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 294.2) internal successors, (2942), 9 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2942 [2023-12-25 22:49:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:33,258 INFO L225 Difference]: With dead ends: 267225 [2023-12-25 22:49:33,258 INFO L226 Difference]: Without dead ends: 160662 [2023-12-25 22:49:33,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2948 GetRequests, 2933 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-25 22:49:33,316 INFO L413 NwaCegarLoop]: 16707 mSDtfsCounter, 45135 mSDsluCounter, 57372 mSDsCounter, 0 mSdLazyCounter, 13871 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45135 SdHoareTripleChecker+Valid, 74079 SdHoareTripleChecker+Invalid, 13926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 13871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:33,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45135 Valid, 74079 Invalid, 13926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 13871 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 22:49:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160662 states. [2023-12-25 22:49:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160662 to 132314. [2023-12-25 22:49:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132314 states, 132313 states have (on average 1.6655128369850278) internal successors, (220369), 132313 states have internal predecessors, (220369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:49:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132314 states to 132314 states and 220369 transitions. [2023-12-25 22:49:35,293 INFO L78 Accepts]: Start accepts. Automaton has 132314 states and 220369 transitions. Word has length 2942 [2023-12-25 22:49:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:35,294 INFO L495 AbstractCegarLoop]: Abstraction has 132314 states and 220369 transitions. [2023-12-25 22:49:35,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 294.2) internal successors, (2942), 9 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:49:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 132314 states and 220369 transitions. [2023-12-25 22:49:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2944 [2023-12-25 22:49:35,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:35,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:49:35,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-25 22:49:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-12-25 22:49:35,571 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1878607277, now seen corresponding path program 1 times [2023-12-25 22:49:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537462853] [2023-12-25 22:49:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:35,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:35,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690369423] [2023-12-25 22:49:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:35,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:35,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:35,952 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:35,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process