/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.2.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 17:28:33,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 17:28:34,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 17:28:34,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 17:28:34,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 17:28:34,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 17:28:34,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 17:28:34,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 17:28:34,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 17:28:34,118 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 17:28:34,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 17:28:34,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 17:28:34,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 17:28:34,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 17:28:34,121 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 17:28:34,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 17:28:34,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 17:28:34,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 17:28:34,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 17:28:34,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 17:28:34,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 17:28:34,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 17:28:34,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 17:28:34,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 17:28:34,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 17:28:34,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 17:28:34,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 17:28:34,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 17:28:34,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 17:28:34,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:28:34,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 17:28:34,127 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 17:28:34,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 17:28:34,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 17:28:34,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 17:28:34,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 17:28:34,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 17:28:34,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 17:28:34,387 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 17:28:34,387 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 17:28:34,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.2.prop1-back-serstep.c [2023-12-25 17:28:35,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 17:28:35,902 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 17:28:35,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.2.prop1-back-serstep.c [2023-12-25 17:28:35,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791753413/44278f14e29242f2abeca5ed28e5f53b/FLAGe8bb21175 [2023-12-25 17:28:35,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791753413/44278f14e29242f2abeca5ed28e5f53b [2023-12-25 17:28:35,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 17:28:35,931 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 17:28:35,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 17:28:35,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 17:28:35,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 17:28:35,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:28:35" (1/1) ... [2023-12-25 17:28:35,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118d6fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:35, skipping insertion in model container [2023-12-25 17:28:35,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:28:35" (1/1) ... [2023-12-25 17:28:36,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 17:28:36,164 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.2.prop1-back-serstep.c[1177,1190] [2023-12-25 17:28:36,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:28:36,653 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 17:28:36,663 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.collision.2.prop1-back-serstep.c[1177,1190] [2023-12-25 17:28:36,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:28:36,876 INFO L206 MainTranslator]: Completed translation [2023-12-25 17:28:36,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36 WrapperNode [2023-12-25 17:28:36,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 17:28:36,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 17:28:36,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 17:28:36,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 17:28:36,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:36,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:37,845 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 10477 [2023-12-25 17:28:37,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 17:28:37,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 17:28:37,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 17:28:37,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 17:28:37,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:37,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:37,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,173 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 17:28:38,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 17:28:38,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 17:28:38,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 17:28:38,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 17:28:38,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (1/1) ... [2023-12-25 17:28:38,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:28:38,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:38,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 17:28:38,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 17:28:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 17:28:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 17:28:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 17:28:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 17:28:39,421 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 17:28:39,423 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 17:28:44,710 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 17:28:44,824 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 17:28:44,824 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 17:28:44,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:28:44 BoogieIcfgContainer [2023-12-25 17:28:44,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 17:28:44,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 17:28:44,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 17:28:44,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 17:28:44,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:28:35" (1/3) ... [2023-12-25 17:28:44,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165b2b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:28:44, skipping insertion in model container [2023-12-25 17:28:44,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:28:36" (2/3) ... [2023-12-25 17:28:44,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165b2b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:28:44, skipping insertion in model container [2023-12-25 17:28:44,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:28:44" (3/3) ... [2023-12-25 17:28:44,831 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.2.prop1-back-serstep.c [2023-12-25 17:28:44,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 17:28:44,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 17:28:44,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 17:28:44,924 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;@5fa5cb34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 17:28:44,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 17:28:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 2633 states, 2631 states have (on average 1.6765488407449638) internal successors, (4411), 2632 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-25 17:28:44,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:44,950 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, 1, 1, 1] [2023-12-25 17:28:44,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:44,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1979801894, now seen corresponding path program 1 times [2023-12-25 17:28:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:44,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251227016] [2023-12-25 17:28:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:46,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:46,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251227016] [2023-12-25 17:28:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251227016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:46,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756107442] [2023-12-25 17:28:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:46,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:46,272 INFO L87 Difference]: Start difference. First operand has 2633 states, 2631 states have (on average 1.6765488407449638) internal successors, (4411), 2632 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:46,471 INFO L93 Difference]: Finished difference Result 5181 states and 8683 transitions. [2023-12-25 17:28:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:28:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2023-12-25 17:28:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:46,501 INFO L225 Difference]: With dead ends: 5181 [2023-12-25 17:28:46,501 INFO L226 Difference]: Without dead ends: 2633 [2023-12-25 17:28:46,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:46,514 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 1 mSDsluCounter, 8803 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13207 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:46,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13207 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2023-12-25 17:28:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2023-12-25 17:28:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2632 states have (on average 1.6751519756838906) internal successors, (4409), 2632 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4409 transitions. [2023-12-25 17:28:46,626 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4409 transitions. Word has length 234 [2023-12-25 17:28:46,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:46,631 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 4409 transitions. [2023-12-25 17:28:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4409 transitions. [2023-12-25 17:28:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-25 17:28:46,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:46,638 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, 1, 1, 1, 1] [2023-12-25 17:28:46,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 17:28:46,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:46,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:46,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1246042898, now seen corresponding path program 1 times [2023-12-25 17:28:46,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:46,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100429888] [2023-12-25 17:28:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:47,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:47,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100429888] [2023-12-25 17:28:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100429888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:47,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879100128] [2023-12-25 17:28:47,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:47,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:47,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:47,129 INFO L87 Difference]: Start difference. First operand 2633 states and 4409 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:47,229 INFO L93 Difference]: Finished difference Result 5184 states and 8681 transitions. [2023-12-25 17:28:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:28:47,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-25 17:28:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:47,240 INFO L225 Difference]: With dead ends: 5184 [2023-12-25 17:28:47,240 INFO L226 Difference]: Without dead ends: 2636 [2023-12-25 17:28:47,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:47,245 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 1 mSDsluCounter, 8801 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13205 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:47,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13205 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2023-12-25 17:28:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2635. [2023-12-25 17:28:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.6746393318147303) internal successors, (4411), 2634 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4411 transitions. [2023-12-25 17:28:47,290 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4411 transitions. Word has length 235 [2023-12-25 17:28:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:47,292 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 4411 transitions. [2023-12-25 17:28:47,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4411 transitions. [2023-12-25 17:28:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-25 17:28:47,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:47,295 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, 1, 1, 1, 1, 1] [2023-12-25 17:28:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 17:28:47,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1537200450, now seen corresponding path program 1 times [2023-12-25 17:28:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820630709] [2023-12-25 17:28:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:47,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820630709] [2023-12-25 17:28:47,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820630709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:47,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:47,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728369580] [2023-12-25 17:28:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:47,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:47,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:47,876 INFO L87 Difference]: Start difference. First operand 2635 states and 4411 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:48,040 INFO L93 Difference]: Finished difference Result 7729 states and 12942 transitions. [2023-12-25 17:28:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:28:48,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-25 17:28:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:48,058 INFO L225 Difference]: With dead ends: 7729 [2023-12-25 17:28:48,058 INFO L226 Difference]: Without dead ends: 5179 [2023-12-25 17:28:48,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:28:48,067 INFO L413 NwaCegarLoop]: 4829 mSDtfsCounter, 4257 mSDsluCounter, 9224 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 14053 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:48,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 14053 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2023-12-25 17:28:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 2637. [2023-12-25 17:28:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2636 states have (on average 1.6741274658573597) internal successors, (4413), 2636 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4413 transitions. [2023-12-25 17:28:48,141 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4413 transitions. Word has length 236 [2023-12-25 17:28:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:48,142 INFO L495 AbstractCegarLoop]: Abstraction has 2637 states and 4413 transitions. [2023-12-25 17:28:48,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4413 transitions. [2023-12-25 17:28:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-25 17:28:48,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:48,153 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, 1, 1, 1, 1, 1, 1] [2023-12-25 17:28:48,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 17:28:48,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:48,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash 297868538, now seen corresponding path program 1 times [2023-12-25 17:28:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883090095] [2023-12-25 17:28:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:48,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:48,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883090095] [2023-12-25 17:28:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883090095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:48,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487754867] [2023-12-25 17:28:48,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:48,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:28:48,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:28:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:28:48,797 INFO L87 Difference]: Start difference. First operand 2637 states and 4413 transitions. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:48,985 INFO L93 Difference]: Finished difference Result 7990 states and 13373 transitions. [2023-12-25 17:28:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:28:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-25 17:28:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:49,004 INFO L225 Difference]: With dead ends: 7990 [2023-12-25 17:28:49,005 INFO L226 Difference]: Without dead ends: 5438 [2023-12-25 17:28:49,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:28:49,017 INFO L413 NwaCegarLoop]: 4828 mSDtfsCounter, 17378 mSDsluCounter, 8802 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17378 SdHoareTripleChecker+Valid, 13630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:49,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17378 Valid, 13630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5438 states. [2023-12-25 17:28:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5438 to 2892. [2023-12-25 17:28:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2891 states have (on average 1.6734693877551021) internal successors, (4838), 2891 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4838 transitions. [2023-12-25 17:28:49,095 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4838 transitions. Word has length 237 [2023-12-25 17:28:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:49,096 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4838 transitions. [2023-12-25 17:28:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4838 transitions. [2023-12-25 17:28:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:28:49,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:49,170 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:28:49,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 17:28:49,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:49,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash -283919711, now seen corresponding path program 1 times [2023-12-25 17:28:49,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:49,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910107599] [2023-12-25 17:28:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:49,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:28:49,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110051425] [2023-12-25 17:28:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:49,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:49,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:49,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:49,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 17:28:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:51,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 7412 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:28:51,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:28:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:51,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:28:51,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:51,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910107599] [2023-12-25 17:28:51,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:28:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110051425] [2023-12-25 17:28:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110051425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:51,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451093494] [2023-12-25 17:28:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:51,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:51,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:51,476 INFO L87 Difference]: Start difference. First operand 2892 states and 4838 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:51,574 INFO L93 Difference]: Finished difference Result 5454 states and 9126 transitions. [2023-12-25 17:28:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:28:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:28:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:51,586 INFO L225 Difference]: With dead ends: 5454 [2023-12-25 17:28:51,586 INFO L226 Difference]: Without dead ends: 2902 [2023-12-25 17:28:51,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:51,590 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:51,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2023-12-25 17:28:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2894. [2023-12-25 17:28:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2894 states, 2893 states have (on average 1.673003802281369) internal successors, (4840), 2893 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 4840 transitions. [2023-12-25 17:28:51,643 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 4840 transitions. Word has length 1804 [2023-12-25 17:28:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:51,644 INFO L495 AbstractCegarLoop]: Abstraction has 2894 states and 4840 transitions. [2023-12-25 17:28:51,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 4840 transitions. [2023-12-25 17:28:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:28:51,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:51,728 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:28:51,752 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 17:28:51,944 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 17:28:51,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:51,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1094792047, now seen corresponding path program 1 times [2023-12-25 17:28:51,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:51,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660204795] [2023-12-25 17:28:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:52,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:28:52,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265768063] [2023-12-25 17:28:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:52,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:52,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:52,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:52,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 17:28:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:54,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 7413 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:28:54,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:28:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:54,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:28:54,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660204795] [2023-12-25 17:28:54,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:28:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265768063] [2023-12-25 17:28:54,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265768063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:54,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:54,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:54,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492580713] [2023-12-25 17:28:54,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:54,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:54,082 INFO L87 Difference]: Start difference. First operand 2894 states and 4840 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:54,175 INFO L93 Difference]: Finished difference Result 5457 states and 9128 transitions. [2023-12-25 17:28:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:28:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:28:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:54,193 INFO L225 Difference]: With dead ends: 5457 [2023-12-25 17:28:54,193 INFO L226 Difference]: Without dead ends: 2903 [2023-12-25 17:28:54,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:54,196 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:54,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2023-12-25 17:28:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2895. [2023-12-25 17:28:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2894 states have (on average 1.6727712508638564) internal successors, (4841), 2894 states have internal predecessors, (4841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4841 transitions. [2023-12-25 17:28:54,244 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4841 transitions. Word has length 1804 [2023-12-25 17:28:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:54,245 INFO L495 AbstractCegarLoop]: Abstraction has 2895 states and 4841 transitions. [2023-12-25 17:28:54,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4841 transitions. [2023-12-25 17:28:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:28:54,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:54,270 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:28:54,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-25 17:28:54,485 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 17:28:54,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:54,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 860632417, now seen corresponding path program 1 times [2023-12-25 17:28:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554828035] [2023-12-25 17:28:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:54,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:54,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:28:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873522384] [2023-12-25 17:28:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:54,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:54,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 17:28:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:56,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 7414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:28:56,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:28:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:56,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:28:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554828035] [2023-12-25 17:28:56,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:28:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873522384] [2023-12-25 17:28:56,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873522384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:56,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:56,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:56,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393793872] [2023-12-25 17:28:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:56,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:56,675 INFO L87 Difference]: Start difference. First operand 2895 states and 4841 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:56,775 INFO L93 Difference]: Finished difference Result 5459 states and 9130 transitions. [2023-12-25 17:28:56,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:28:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:28:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:56,787 INFO L225 Difference]: With dead ends: 5459 [2023-12-25 17:28:56,788 INFO L226 Difference]: Without dead ends: 2904 [2023-12-25 17:28:56,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:56,792 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:56,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2023-12-25 17:28:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2896. [2023-12-25 17:28:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2895 states have (on average 1.6725388601036268) internal successors, (4842), 2895 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4842 transitions. [2023-12-25 17:28:56,848 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4842 transitions. Word has length 1804 [2023-12-25 17:28:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:56,849 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 4842 transitions. [2023-12-25 17:28:56,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4842 transitions. [2023-12-25 17:28:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:28:56,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:56,885 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:28:56,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 17:28:57,098 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 17:28:57,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:57,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash 606301523, now seen corresponding path program 1 times [2023-12-25 17:28:57,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:57,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177643252] [2023-12-25 17:28:57,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:57,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:57,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:28:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779418396] [2023-12-25 17:28:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:57,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:57,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:57,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:57,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 17:28:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:59,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 7415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:28:59,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:28:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:59,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:28:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177643252] [2023-12-25 17:28:59,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:28:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779418396] [2023-12-25 17:28:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779418396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:59,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:28:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004572169] [2023-12-25 17:28:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:28:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:28:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:59,082 INFO L87 Difference]: Start difference. First operand 2896 states and 4842 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:59,165 INFO L93 Difference]: Finished difference Result 5461 states and 9132 transitions. [2023-12-25 17:28:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:28:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:28:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:59,182 INFO L225 Difference]: With dead ends: 5461 [2023-12-25 17:28:59,183 INFO L226 Difference]: Without dead ends: 2905 [2023-12-25 17:28:59,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:28:59,188 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:59,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:28:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2023-12-25 17:28:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2897. [2023-12-25 17:28:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 1.6723066298342542) internal successors, (4843), 2896 states have internal predecessors, (4843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4843 transitions. [2023-12-25 17:28:59,234 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4843 transitions. Word has length 1804 [2023-12-25 17:28:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:59,235 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 4843 transitions. [2023-12-25 17:28:59,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4843 transitions. [2023-12-25 17:28:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:28:59,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:59,261 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-12-25 17:28:59,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 17:28:59,472 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 17:28:59,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:59,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2014793055, now seen corresponding path program 1 times [2023-12-25 17:28:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394732763] [2023-12-25 17:28:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:59,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:28:59,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898902369] [2023-12-25 17:28:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:59,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:59,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:59,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:59,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 17:29:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:01,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 7416 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:29:01,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:01,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:29:01,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:01,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394732763] [2023-12-25 17:29:01,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:01,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898902369] [2023-12-25 17:29:01,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898902369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:29:01,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:29:01,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:29:01,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862334802] [2023-12-25 17:29:01,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:01,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:29:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:29:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:01,289 INFO L87 Difference]: Start difference. First operand 2897 states and 4843 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:01,366 INFO L93 Difference]: Finished difference Result 5463 states and 9134 transitions. [2023-12-25 17:29:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:29:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:29:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:01,373 INFO L225 Difference]: With dead ends: 5463 [2023-12-25 17:29:01,373 INFO L226 Difference]: Without dead ends: 2906 [2023-12-25 17:29:01,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:01,377 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:01,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:29:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2023-12-25 17:29:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2898. [2023-12-25 17:29:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2897 states have (on average 1.672074559889541) internal successors, (4844), 2897 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4844 transitions. [2023-12-25 17:29:01,416 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4844 transitions. Word has length 1804 [2023-12-25 17:29:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:01,417 INFO L495 AbstractCegarLoop]: Abstraction has 2898 states and 4844 transitions. [2023-12-25 17:29:01,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4844 transitions. [2023-12-25 17:29:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:29:01,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:01,443 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-12-25 17:29:01,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-25 17:29:01,660 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 17:29:01,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:01,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1813971729, now seen corresponding path program 1 times [2023-12-25 17:29:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840546295] [2023-12-25 17:29:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:01,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:01,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664504083] [2023-12-25 17:29:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:01,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:01,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:01,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:01,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 17:29:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:03,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 7417 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:29:03,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:03,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:29:03,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840546295] [2023-12-25 17:29:03,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664504083] [2023-12-25 17:29:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664504083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:29:03,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:29:03,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:29:03,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871052213] [2023-12-25 17:29:03,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:29:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:29:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:03,504 INFO L87 Difference]: Start difference. First operand 2898 states and 4844 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:03,590 INFO L93 Difference]: Finished difference Result 5465 states and 9136 transitions. [2023-12-25 17:29:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:29:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:29:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:03,599 INFO L225 Difference]: With dead ends: 5465 [2023-12-25 17:29:03,599 INFO L226 Difference]: Without dead ends: 2907 [2023-12-25 17:29:03,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:03,602 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:03,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:29:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2023-12-25 17:29:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2899. [2023-12-25 17:29:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 1.6718426501035197) internal successors, (4845), 2898 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4845 transitions. [2023-12-25 17:29:03,660 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4845 transitions. Word has length 1804 [2023-12-25 17:29:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 2899 states and 4845 transitions. [2023-12-25 17:29:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4845 transitions. [2023-12-25 17:29:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:29:03,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:03,688 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-12-25 17:29:03,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:03,904 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 17:29:03,904 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:03,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash -954140063, now seen corresponding path program 1 times [2023-12-25 17:29:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922430428] [2023-12-25 17:29:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:04,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044245490] [2023-12-25 17:29:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:04,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:04,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:04,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:04,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 17:29:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:05,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 7418 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:29:05,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:05,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:29:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:05,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922430428] [2023-12-25 17:29:05,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:05,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044245490] [2023-12-25 17:29:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044245490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:29:05,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:29:05,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:29:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848940799] [2023-12-25 17:29:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:05,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:29:05,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:29:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:05,741 INFO L87 Difference]: Start difference. First operand 2899 states and 4845 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:05,829 INFO L93 Difference]: Finished difference Result 5467 states and 9138 transitions. [2023-12-25 17:29:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:29:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:29:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:05,837 INFO L225 Difference]: With dead ends: 5467 [2023-12-25 17:29:05,837 INFO L226 Difference]: Without dead ends: 2908 [2023-12-25 17:29:05,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:05,840 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:05,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:29:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2023-12-25 17:29:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2900. [2023-12-25 17:29:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2899 states have (on average 1.6716109003104518) internal successors, (4846), 2899 states have internal predecessors, (4846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4846 transitions. [2023-12-25 17:29:05,880 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4846 transitions. Word has length 1804 [2023-12-25 17:29:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:05,881 INFO L495 AbstractCegarLoop]: Abstraction has 2900 states and 4846 transitions. [2023-12-25 17:29:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4846 transitions. [2023-12-25 17:29:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:29:05,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:05,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:05,933 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 17:29:06,120 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 17:29:06,121 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:06,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1407980243, now seen corresponding path program 1 times [2023-12-25 17:29:06,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:06,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284744675] [2023-12-25 17:29:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:06,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:06,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38901008] [2023-12-25 17:29:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:06,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:06,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:06,238 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:06,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 17:29:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:07,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 7419 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:29:07,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:07,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:29:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284744675] [2023-12-25 17:29:07,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38901008] [2023-12-25 17:29:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38901008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:29:07,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:29:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:29:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401092544] [2023-12-25 17:29:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:07,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:29:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:29:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:07,920 INFO L87 Difference]: Start difference. First operand 2900 states and 4846 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:08,007 INFO L93 Difference]: Finished difference Result 5469 states and 9140 transitions. [2023-12-25 17:29:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:29:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:29:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:08,015 INFO L225 Difference]: With dead ends: 5469 [2023-12-25 17:29:08,015 INFO L226 Difference]: Without dead ends: 2909 [2023-12-25 17:29:08,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:08,020 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:08,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:29:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2023-12-25 17:29:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2901. [2023-12-25 17:29:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2900 states have (on average 1.6713793103448276) internal successors, (4847), 2900 states have internal predecessors, (4847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 4847 transitions. [2023-12-25 17:29:08,065 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 4847 transitions. Word has length 1804 [2023-12-25 17:29:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:08,067 INFO L495 AbstractCegarLoop]: Abstraction has 2901 states and 4847 transitions. [2023-12-25 17:29:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 4847 transitions. [2023-12-25 17:29:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:29:08,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:08,093 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:08,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:08,309 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 17:29:08,310 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:08,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1831821243, now seen corresponding path program 1 times [2023-12-25 17:29:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695571302] [2023-12-25 17:29:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:08,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:08,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832351258] [2023-12-25 17:29:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:08,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:08,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:08,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:08,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 17:29:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:10,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 7420 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 17:29:10,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:10,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:29:10,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:10,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695571302] [2023-12-25 17:29:10,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:10,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832351258] [2023-12-25 17:29:10,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832351258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:29:10,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:29:10,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:29:10,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7378747] [2023-12-25 17:29:10,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:10,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:29:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:29:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:10,073 INFO L87 Difference]: Start difference. First operand 2901 states and 4847 transitions. Second operand has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:10,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:10,145 INFO L93 Difference]: Finished difference Result 5471 states and 9142 transitions. [2023-12-25 17:29:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:29:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 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 1804 [2023-12-25 17:29:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:10,152 INFO L225 Difference]: With dead ends: 5471 [2023-12-25 17:29:10,153 INFO L226 Difference]: Without dead ends: 2910 [2023-12-25 17:29:10,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:29:10,156 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 12 mSDsluCounter, 8798 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:10,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:29:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2023-12-25 17:29:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2902. [2023-12-25 17:29:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2901 states have (on average 1.671147880041365) internal successors, (4848), 2901 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4848 transitions. [2023-12-25 17:29:10,193 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4848 transitions. Word has length 1804 [2023-12-25 17:29:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:10,195 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 4848 transitions. [2023-12-25 17:29:10,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4848 transitions. [2023-12-25 17:29:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-25 17:29:10,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:10,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:10,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:10,432 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 17:29:10,433 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:10,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1852290889, now seen corresponding path program 1 times [2023-12-25 17:29:10,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:10,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467077251] [2023-12-25 17:29:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:10,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:10,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:10,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020501371] [2023-12-25 17:29:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:10,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:10,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:10,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:10,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 17:29:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:12,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 7421 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:12,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 17:29:12,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-25 17:29:12,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:12,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467077251] [2023-12-25 17:29:12,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:12,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020501371] [2023-12-25 17:29:12,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020501371] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:12,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:12,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980157204] [2023-12-25 17:29:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:12,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:12,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:12,620 INFO L87 Difference]: Start difference. First operand 2902 states and 4848 transitions. Second operand has 5 states, 5 states have (on average 327.4) internal successors, (1637), 5 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:15,151 INFO L93 Difference]: Finished difference Result 10412 states and 17349 transitions. [2023-12-25 17:29:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:15,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 327.4) internal successors, (1637), 5 states have internal predecessors, (1637), 0 states have call successors, (0), 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 1804 [2023-12-25 17:29:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:15,165 INFO L225 Difference]: With dead ends: 10412 [2023-12-25 17:29:15,165 INFO L226 Difference]: Without dead ends: 5457 [2023-12-25 17:29:15,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3607 GetRequests, 3598 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:15,172 INFO L413 NwaCegarLoop]: 7757 mSDtfsCounter, 8014 mSDsluCounter, 11395 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8014 SdHoareTripleChecker+Valid, 19152 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:15,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8014 Valid, 19152 Invalid, 3664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3499 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 17:29:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2023-12-25 17:29:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 2904. [2023-12-25 17:29:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2903 states have (on average 1.6706854977609369) internal successors, (4850), 2903 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4850 transitions. [2023-12-25 17:29:15,220 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4850 transitions. Word has length 1804 [2023-12-25 17:29:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:15,222 INFO L495 AbstractCegarLoop]: Abstraction has 2904 states and 4850 transitions. [2023-12-25 17:29:15,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.4) internal successors, (1637), 5 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4850 transitions. [2023-12-25 17:29:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1806 [2023-12-25 17:29:15,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:15,247 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:15,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:15,469 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 17:29:15,470 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:15,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1785244481, now seen corresponding path program 1 times [2023-12-25 17:29:15,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:15,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783185777] [2023-12-25 17:29:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:15,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:15,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118914765] [2023-12-25 17:29:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:15,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:15,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:15,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:15,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 17:29:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:17,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 7424 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:17,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 10 proven. 157 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 17:29:17,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-25 17:29:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:17,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783185777] [2023-12-25 17:29:17,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:17,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118914765] [2023-12-25 17:29:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118914765] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924281332] [2023-12-25 17:29:17,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:17,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:17,567 INFO L87 Difference]: Start difference. First operand 2904 states and 4850 transitions. Second operand has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:19,667 INFO L93 Difference]: Finished difference Result 10420 states and 17357 transitions. [2023-12-25 17:29:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:19,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 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 1805 [2023-12-25 17:29:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:19,680 INFO L225 Difference]: With dead ends: 10420 [2023-12-25 17:29:19,680 INFO L226 Difference]: Without dead ends: 5458 [2023-12-25 17:29:19,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3609 GetRequests, 3600 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:19,687 INFO L413 NwaCegarLoop]: 7749 mSDtfsCounter, 11767 mSDsluCounter, 7519 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11767 SdHoareTripleChecker+Valid, 15268 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:19,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11767 Valid, 15268 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 17:29:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2023-12-25 17:29:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 2906. [2023-12-25 17:29:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2905 states have (on average 1.670223752151463) internal successors, (4852), 2905 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4852 transitions. [2023-12-25 17:29:19,735 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4852 transitions. Word has length 1805 [2023-12-25 17:29:19,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:19,737 INFO L495 AbstractCegarLoop]: Abstraction has 2906 states and 4852 transitions. [2023-12-25 17:29:19,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4852 transitions. [2023-12-25 17:29:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1807 [2023-12-25 17:29:19,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:19,765 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:19,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:19,980 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 17:29:19,980 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:19,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 31984349, now seen corresponding path program 1 times [2023-12-25 17:29:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745887675] [2023-12-25 17:29:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:20,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:20,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605032724] [2023-12-25 17:29:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:20,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:20,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:20,105 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:20,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 17:29:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:21,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 7427 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:21,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 12 proven. 157 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 17:29:22,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-12-25 17:29:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745887675] [2023-12-25 17:29:22,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605032724] [2023-12-25 17:29:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605032724] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:22,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:22,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637622552] [2023-12-25 17:29:22,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:22,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:22,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:22,078 INFO L87 Difference]: Start difference. First operand 2906 states and 4852 transitions. Second operand has 5 states, 5 states have (on average 328.6) internal successors, (1643), 5 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:24,367 INFO L93 Difference]: Finished difference Result 10428 states and 17365 transitions. [2023-12-25 17:29:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:24,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 328.6) internal successors, (1643), 5 states have internal predecessors, (1643), 0 states have call successors, (0), 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 1806 [2023-12-25 17:29:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:24,379 INFO L225 Difference]: With dead ends: 10428 [2023-12-25 17:29:24,379 INFO L226 Difference]: Without dead ends: 5459 [2023-12-25 17:29:24,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3611 GetRequests, 3602 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:24,386 INFO L413 NwaCegarLoop]: 7741 mSDtfsCounter, 8002 mSDsluCounter, 11375 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8002 SdHoareTripleChecker+Valid, 19116 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:24,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8002 Valid, 19116 Invalid, 3664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3499 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:29:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2023-12-25 17:29:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 2908. [2023-12-25 17:29:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2907 states have (on average 1.669762641898865) internal successors, (4854), 2907 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4854 transitions. [2023-12-25 17:29:24,432 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4854 transitions. Word has length 1806 [2023-12-25 17:29:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:24,433 INFO L495 AbstractCegarLoop]: Abstraction has 2908 states and 4854 transitions. [2023-12-25 17:29:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 328.6) internal successors, (1643), 5 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4854 transitions. [2023-12-25 17:29:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1808 [2023-12-25 17:29:24,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:24,458 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:24,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:24,680 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 17:29:24,681 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:24,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash -378388197, now seen corresponding path program 1 times [2023-12-25 17:29:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233910023] [2023-12-25 17:29:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:24,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8317024] [2023-12-25 17:29:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:24,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:24,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:24,802 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:24,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 17:29:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:26,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 7431 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:26,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 14 proven. 157 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 17:29:26,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-25 17:29:26,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233910023] [2023-12-25 17:29:26,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8317024] [2023-12-25 17:29:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8317024] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:26,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:26,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:26,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022062087] [2023-12-25 17:29:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:26,694 INFO L87 Difference]: Start difference. First operand 2908 states and 4854 transitions. Second operand has 5 states, 5 states have (on average 329.2) internal successors, (1646), 5 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:28,618 INFO L93 Difference]: Finished difference Result 10436 states and 17373 transitions. [2023-12-25 17:29:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:28,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 329.2) internal successors, (1646), 5 states have internal predecessors, (1646), 0 states have call successors, (0), 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 1807 [2023-12-25 17:29:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:28,630 INFO L225 Difference]: With dead ends: 10436 [2023-12-25 17:29:28,631 INFO L226 Difference]: Without dead ends: 5460 [2023-12-25 17:29:28,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3613 GetRequests, 3604 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:28,638 INFO L413 NwaCegarLoop]: 7733 mSDtfsCounter, 11751 mSDsluCounter, 7509 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11751 SdHoareTripleChecker+Valid, 15242 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:28,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11751 Valid, 15242 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:29:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2023-12-25 17:29:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 2910. [2023-12-25 17:29:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 1.6693021656926779) internal successors, (4856), 2909 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4856 transitions. [2023-12-25 17:29:28,688 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4856 transitions. Word has length 1807 [2023-12-25 17:29:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:28,689 INFO L495 AbstractCegarLoop]: Abstraction has 2910 states and 4856 transitions. [2023-12-25 17:29:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 329.2) internal successors, (1646), 5 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4856 transitions. [2023-12-25 17:29:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1809 [2023-12-25 17:29:28,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:28,714 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:28,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:28,928 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 17:29:28,928 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:28,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash -653167995, now seen corresponding path program 1 times [2023-12-25 17:29:28,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:28,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737406732] [2023-12-25 17:29:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:28,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:29,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:29,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646000523] [2023-12-25 17:29:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:29,040 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:29,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 17:29:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:30,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 7434 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:30,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 16 proven. 157 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 17:29:30,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-25 17:29:30,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737406732] [2023-12-25 17:29:30,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646000523] [2023-12-25 17:29:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646000523] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:31,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265286394] [2023-12-25 17:29:31,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:31,004 INFO L87 Difference]: Start difference. First operand 2910 states and 4856 transitions. Second operand has 5 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:32,963 INFO L93 Difference]: Finished difference Result 10444 states and 17381 transitions. [2023-12-25 17:29:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:32,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 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 1808 [2023-12-25 17:29:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:32,973 INFO L225 Difference]: With dead ends: 10444 [2023-12-25 17:29:32,973 INFO L226 Difference]: Without dead ends: 5461 [2023-12-25 17:29:32,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3615 GetRequests, 3606 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:32,980 INFO L413 NwaCegarLoop]: 7725 mSDtfsCounter, 11737 mSDsluCounter, 7505 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11737 SdHoareTripleChecker+Valid, 15230 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:32,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11737 Valid, 15230 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:29:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2023-12-25 17:29:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 2912. [2023-12-25 17:29:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2911 states have (on average 1.6688423222260391) internal successors, (4858), 2911 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4858 transitions. [2023-12-25 17:29:33,034 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4858 transitions. Word has length 1808 [2023-12-25 17:29:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:33,036 INFO L495 AbstractCegarLoop]: Abstraction has 2912 states and 4858 transitions. [2023-12-25 17:29:33,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4858 transitions. [2023-12-25 17:29:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1810 [2023-12-25 17:29:33,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:33,061 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:33,089 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 17:29:33,276 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 17:29:33,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:33,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:33,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1900681205, now seen corresponding path program 1 times [2023-12-25 17:29:33,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:33,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761266159] [2023-12-25 17:29:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:33,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:33,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:33,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523231280] [2023-12-25 17:29:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:33,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:33,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:33,392 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 17:29:33,396 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 17:29:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:34,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 7437 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:34,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 18 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 17:29:35,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-25 17:29:35,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761266159] [2023-12-25 17:29:35,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523231280] [2023-12-25 17:29:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523231280] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:35,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:35,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:35,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931694639] [2023-12-25 17:29:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:35,288 INFO L87 Difference]: Start difference. First operand 2912 states and 4858 transitions. Second operand has 5 states, 5 states have (on average 330.4) internal successors, (1652), 5 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:37,221 INFO L93 Difference]: Finished difference Result 10452 states and 17389 transitions. [2023-12-25 17:29:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:37,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 330.4) internal successors, (1652), 5 states have internal predecessors, (1652), 0 states have call successors, (0), 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 1809 [2023-12-25 17:29:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:37,229 INFO L225 Difference]: With dead ends: 10452 [2023-12-25 17:29:37,229 INFO L226 Difference]: Without dead ends: 5462 [2023-12-25 17:29:37,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3617 GetRequests, 3608 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:37,236 INFO L413 NwaCegarLoop]: 7717 mSDtfsCounter, 11735 mSDsluCounter, 7499 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11735 SdHoareTripleChecker+Valid, 15216 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:37,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11735 Valid, 15216 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:29:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2023-12-25 17:29:37,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 2914. [2023-12-25 17:29:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2913 states have (on average 1.6683831101956745) internal successors, (4860), 2913 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 4860 transitions. [2023-12-25 17:29:37,288 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 4860 transitions. Word has length 1809 [2023-12-25 17:29:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 4860 transitions. [2023-12-25 17:29:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.4) internal successors, (1652), 5 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 4860 transitions. [2023-12-25 17:29:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1811 [2023-12-25 17:29:37,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:37,313 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:37,336 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 17:29:37,513 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 17:29:37,514 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:37,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1202575531, now seen corresponding path program 1 times [2023-12-25 17:29:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158899572] [2023-12-25 17:29:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:37,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:37,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373530894] [2023-12-25 17:29:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:37,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:37,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:37,669 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 17:29:37,685 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 17:29:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:39,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 7440 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:29:39,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 19 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:39,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-25 17:29:39,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:39,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158899572] [2023-12-25 17:29:39,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:39,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373530894] [2023-12-25 17:29:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373530894] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:39,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:39,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:29:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243396368] [2023-12-25 17:29:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:29:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:29:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:29:39,632 INFO L87 Difference]: Start difference. First operand 2914 states and 4860 transitions. Second operand has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:43,698 INFO L93 Difference]: Finished difference Result 13049 states and 21716 transitions. [2023-12-25 17:29:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:29:43,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 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 1810 [2023-12-25 17:29:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:43,708 INFO L225 Difference]: With dead ends: 13049 [2023-12-25 17:29:43,708 INFO L226 Difference]: Without dead ends: 8052 [2023-12-25 17:29:43,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3620 GetRequests, 3608 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 17:29:43,712 INFO L413 NwaCegarLoop]: 7711 mSDtfsCounter, 12239 mSDsluCounter, 25962 mSDsCounter, 0 mSdLazyCounter, 6953 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12239 SdHoareTripleChecker+Valid, 33673 SdHoareTripleChecker+Invalid, 7120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 6953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:43,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12239 Valid, 33673 Invalid, 7120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [167 Valid, 6953 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:29:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8052 states. [2023-12-25 17:29:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8052 to 2916. [2023-12-25 17:29:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 1.6679245283018869) internal successors, (4862), 2915 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4862 transitions. [2023-12-25 17:29:43,777 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4862 transitions. Word has length 1810 [2023-12-25 17:29:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:43,778 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4862 transitions. [2023-12-25 17:29:43,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4862 transitions. [2023-12-25 17:29:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1812 [2023-12-25 17:29:43,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:43,802 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:43,829 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 17:29:44,026 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 17:29:44,027 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:44,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1382174033, now seen corresponding path program 1 times [2023-12-25 17:29:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559989119] [2023-12-25 17:29:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:44,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069177521] [2023-12-25 17:29:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:44,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:44,210 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 17:29:44,227 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 17:29:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:45,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 7444 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:45,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 20 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:46,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-25 17:29:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:46,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559989119] [2023-12-25 17:29:46,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:46,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069177521] [2023-12-25 17:29:46,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069177521] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:46,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:46,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225031313] [2023-12-25 17:29:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:46,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:46,130 INFO L87 Difference]: Start difference. First operand 2916 states and 4862 transitions. Second operand has 5 states, 5 states have (on average 331.6) internal successors, (1658), 5 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:48,079 INFO L93 Difference]: Finished difference Result 10468 states and 17405 transitions. [2023-12-25 17:29:48,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:48,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 331.6) internal successors, (1658), 5 states have internal predecessors, (1658), 0 states have call successors, (0), 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 1811 [2023-12-25 17:29:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:48,085 INFO L225 Difference]: With dead ends: 10468 [2023-12-25 17:29:48,085 INFO L226 Difference]: Without dead ends: 5464 [2023-12-25 17:29:48,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3621 GetRequests, 3612 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:48,088 INFO L413 NwaCegarLoop]: 7701 mSDtfsCounter, 11719 mSDsluCounter, 7489 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11719 SdHoareTripleChecker+Valid, 15190 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:48,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11719 Valid, 15190 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:29:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2023-12-25 17:29:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 2918. [2023-12-25 17:29:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2917 states have (on average 1.667466575248543) internal successors, (4864), 2917 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 4864 transitions. [2023-12-25 17:29:48,130 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 4864 transitions. Word has length 1811 [2023-12-25 17:29:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:48,131 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 4864 transitions. [2023-12-25 17:29:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.6) internal successors, (1658), 5 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 4864 transitions. [2023-12-25 17:29:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1813 [2023-12-25 17:29:48,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:48,155 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:48,183 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 17:29:48,383 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 17:29:48,383 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:48,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:48,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1223061843, now seen corresponding path program 1 times [2023-12-25 17:29:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:48,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907313567] [2023-12-25 17:29:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:48,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:48,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:48,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777893627] [2023-12-25 17:29:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:48,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:48,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:48,489 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 17:29:48,494 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 17:29:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:50,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 7447 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:50,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:50,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-25 17:29:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907313567] [2023-12-25 17:29:50,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777893627] [2023-12-25 17:29:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777893627] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:50,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:50,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:50,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385902822] [2023-12-25 17:29:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:50,354 INFO L87 Difference]: Start difference. First operand 2918 states and 4864 transitions. Second operand has 5 states, 5 states have (on average 332.6) internal successors, (1663), 5 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:52,285 INFO L93 Difference]: Finished difference Result 10479 states and 17418 transitions. [2023-12-25 17:29:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 332.6) internal successors, (1663), 5 states have internal predecessors, (1663), 0 states have call successors, (0), 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 1812 [2023-12-25 17:29:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:52,292 INFO L225 Difference]: With dead ends: 10479 [2023-12-25 17:29:52,293 INFO L226 Difference]: Without dead ends: 5468 [2023-12-25 17:29:52,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3623 GetRequests, 3614 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:52,296 INFO L413 NwaCegarLoop]: 7688 mSDtfsCounter, 11709 mSDsluCounter, 7483 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11709 SdHoareTripleChecker+Valid, 15171 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:52,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11709 Valid, 15171 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:29:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5468 states. [2023-12-25 17:29:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5468 to 2923. [2023-12-25 17:29:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 1.6670088980150581) internal successors, (4871), 2922 states have internal predecessors, (4871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4871 transitions. [2023-12-25 17:29:52,334 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4871 transitions. Word has length 1812 [2023-12-25 17:29:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:52,336 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 4871 transitions. [2023-12-25 17:29:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 332.6) internal successors, (1663), 5 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4871 transitions. [2023-12-25 17:29:52,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1814 [2023-12-25 17:29:52,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:52,359 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:52,381 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 17:29:52,572 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 17:29:52,572 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:52,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1865894843, now seen corresponding path program 1 times [2023-12-25 17:29:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:52,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585469438] [2023-12-25 17:29:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:52,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:52,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684429781] [2023-12-25 17:29:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:52,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:52,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:52,672 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 17:29:52,677 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 17:29:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:54,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 7450 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:54,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 26 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:54,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-25 17:29:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585469438] [2023-12-25 17:29:54,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684429781] [2023-12-25 17:29:54,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684429781] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:54,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:54,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620720490] [2023-12-25 17:29:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:54,523 INFO L87 Difference]: Start difference. First operand 2923 states and 4871 transitions. Second operand has 5 states, 5 states have (on average 333.2) internal successors, (1666), 5 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:56,498 INFO L93 Difference]: Finished difference Result 10522 states and 17484 transitions. [2023-12-25 17:29:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:29:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 333.2) internal successors, (1666), 5 states have internal predecessors, (1666), 0 states have call successors, (0), 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 1813 [2023-12-25 17:29:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:56,505 INFO L225 Difference]: With dead ends: 10522 [2023-12-25 17:29:56,505 INFO L226 Difference]: Without dead ends: 5469 [2023-12-25 17:29:56,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3625 GetRequests, 3616 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:29:56,509 INFO L413 NwaCegarLoop]: 7680 mSDtfsCounter, 11699 mSDsluCounter, 7478 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11699 SdHoareTripleChecker+Valid, 15158 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:56,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11699 Valid, 15158 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:29:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2023-12-25 17:29:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 2925. [2023-12-25 17:29:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2924 states have (on average 1.6665526675786593) internal successors, (4873), 2924 states have internal predecessors, (4873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4873 transitions. [2023-12-25 17:29:56,549 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4873 transitions. Word has length 1813 [2023-12-25 17:29:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:56,550 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 4873 transitions. [2023-12-25 17:29:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 333.2) internal successors, (1666), 5 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4873 transitions. [2023-12-25 17:29:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2023-12-25 17:29:56,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:56,574 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:29:56,599 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 17:29:56,796 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 17:29:56,796 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:56,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1909409929, now seen corresponding path program 1 times [2023-12-25 17:29:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153200645] [2023-12-25 17:29:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:56,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:29:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493750925] [2023-12-25 17:29:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:56,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:56,898 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 17:29:56,916 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 17:29:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:58,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 7454 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:29:58,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 28 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:58,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 17:29:58,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153200645] [2023-12-25 17:29:58,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:29:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493750925] [2023-12-25 17:29:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493750925] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:58,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:29:58,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:29:58,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877902364] [2023-12-25 17:29:58,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:29:58,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:29:58,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:58,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:29:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:29:58,781 INFO L87 Difference]: Start difference. First operand 2925 states and 4873 transitions. Second operand has 5 states, 5 states have (on average 334.2) internal successors, (1671), 5 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:00,983 INFO L93 Difference]: Finished difference Result 10533 states and 17497 transitions. [2023-12-25 17:30:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:00,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 334.2) internal successors, (1671), 5 states have internal predecessors, (1671), 0 states have call successors, (0), 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 1814 [2023-12-25 17:30:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:00,990 INFO L225 Difference]: With dead ends: 10533 [2023-12-25 17:30:00,990 INFO L226 Difference]: Without dead ends: 5473 [2023-12-25 17:30:00,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3627 GetRequests, 3618 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:00,994 INFO L413 NwaCegarLoop]: 7667 mSDtfsCounter, 7950 mSDsluCounter, 11291 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7950 SdHoareTripleChecker+Valid, 18958 SdHoareTripleChecker+Invalid, 3648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:00,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7950 Valid, 18958 Invalid, 3648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:30:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2023-12-25 17:30:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 2930. [2023-12-25 17:30:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2929 states have (on average 1.6660976442471833) internal successors, (4880), 2929 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4880 transitions. [2023-12-25 17:30:01,036 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4880 transitions. Word has length 1814 [2023-12-25 17:30:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:01,037 INFO L495 AbstractCegarLoop]: Abstraction has 2930 states and 4880 transitions. [2023-12-25 17:30:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 334.2) internal successors, (1671), 5 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4880 transitions. [2023-12-25 17:30:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2023-12-25 17:30:01,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:01,061 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:01,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 17:30:01,276 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 17:30:01,276 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:01,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash 738209719, now seen corresponding path program 1 times [2023-12-25 17:30:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:01,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844908397] [2023-12-25 17:30:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:01,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:01,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382424077] [2023-12-25 17:30:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:01,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:01,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:01,383 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 17:30:01,400 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 17:30:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:02,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 7457 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:02,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 32 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:03,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-25 17:30:03,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844908397] [2023-12-25 17:30:03,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382424077] [2023-12-25 17:30:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382424077] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:03,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559377375] [2023-12-25 17:30:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:03,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:03,367 INFO L87 Difference]: Start difference. First operand 2930 states and 4880 transitions. Second operand has 5 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:05,271 INFO L93 Difference]: Finished difference Result 10560 states and 17536 transitions. [2023-12-25 17:30:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:05,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 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 1815 [2023-12-25 17:30:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:05,277 INFO L225 Difference]: With dead ends: 10560 [2023-12-25 17:30:05,277 INFO L226 Difference]: Without dead ends: 5477 [2023-12-25 17:30:05,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3629 GetRequests, 3620 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:05,281 INFO L413 NwaCegarLoop]: 7654 mSDtfsCounter, 11677 mSDsluCounter, 7466 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11677 SdHoareTripleChecker+Valid, 15120 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:05,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11677 Valid, 15120 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:30:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2023-12-25 17:30:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 2935. [2023-12-25 17:30:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 2934 states have (on average 1.665644171779141) internal successors, (4887), 2934 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 4887 transitions. [2023-12-25 17:30:05,323 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 4887 transitions. Word has length 1815 [2023-12-25 17:30:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:05,324 INFO L495 AbstractCegarLoop]: Abstraction has 2935 states and 4887 transitions. [2023-12-25 17:30:05,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 4887 transitions. [2023-12-25 17:30:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1817 [2023-12-25 17:30:05,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:05,348 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:05,376 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 17:30:05,576 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 17:30:05,576 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:05,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1633250815, now seen corresponding path program 1 times [2023-12-25 17:30:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221821187] [2023-12-25 17:30:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:05,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731945536] [2023-12-25 17:30:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:05,685 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 17:30:05,703 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 17:30:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:07,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 7461 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:07,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 36 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:07,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-25 17:30:07,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:07,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221821187] [2023-12-25 17:30:07,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:07,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731945536] [2023-12-25 17:30:07,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731945536] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:07,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:07,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665734453] [2023-12-25 17:30:07,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:07,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:07,585 INFO L87 Difference]: Start difference. First operand 2935 states and 4887 transitions. Second operand has 5 states, 5 states have (on average 335.8) internal successors, (1679), 5 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:09,796 INFO L93 Difference]: Finished difference Result 10581 states and 17565 transitions. [2023-12-25 17:30:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:09,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 335.8) internal successors, (1679), 5 states have internal predecessors, (1679), 0 states have call successors, (0), 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 1816 [2023-12-25 17:30:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:09,803 INFO L225 Difference]: With dead ends: 10581 [2023-12-25 17:30:09,803 INFO L226 Difference]: Without dead ends: 5478 [2023-12-25 17:30:09,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3631 GetRequests, 3622 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:09,806 INFO L413 NwaCegarLoop]: 7646 mSDtfsCounter, 7936 mSDsluCounter, 11269 mSDsCounter, 0 mSdLazyCounter, 3475 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7936 SdHoareTripleChecker+Valid, 18915 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:09,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7936 Valid, 18915 Invalid, 3640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3475 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:30:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2023-12-25 17:30:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 2937. [2023-12-25 17:30:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2936 states have (on average 1.6651907356948228) internal successors, (4889), 2936 states have internal predecessors, (4889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 4889 transitions. [2023-12-25 17:30:09,838 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 4889 transitions. Word has length 1816 [2023-12-25 17:30:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:09,839 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 4889 transitions. [2023-12-25 17:30:09,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 335.8) internal successors, (1679), 5 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 4889 transitions. [2023-12-25 17:30:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1818 [2023-12-25 17:30:09,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:09,862 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:09,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-25 17:30:10,076 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 17:30:10,076 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:10,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:10,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2126738959, now seen corresponding path program 1 times [2023-12-25 17:30:10,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:10,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551046087] [2023-12-25 17:30:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:10,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:10,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833012445] [2023-12-25 17:30:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:10,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:10,178 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 17:30:10,200 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 17:30:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:11,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 7464 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:11,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 38 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:12,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-25 17:30:12,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:12,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551046087] [2023-12-25 17:30:12,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:12,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833012445] [2023-12-25 17:30:12,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833012445] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:12,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:12,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72717161] [2023-12-25 17:30:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:12,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:12,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:12,129 INFO L87 Difference]: Start difference. First operand 2937 states and 4889 transitions. Second operand has 5 states, 5 states have (on average 336.8) internal successors, (1684), 5 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:14,340 INFO L93 Difference]: Finished difference Result 10592 states and 17578 transitions. [2023-12-25 17:30:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 336.8) internal successors, (1684), 5 states have internal predecessors, (1684), 0 states have call successors, (0), 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 1817 [2023-12-25 17:30:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:14,347 INFO L225 Difference]: With dead ends: 10592 [2023-12-25 17:30:14,347 INFO L226 Difference]: Without dead ends: 5482 [2023-12-25 17:30:14,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3633 GetRequests, 3624 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:14,350 INFO L413 NwaCegarLoop]: 7633 mSDtfsCounter, 7928 mSDsluCounter, 11257 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7928 SdHoareTripleChecker+Valid, 18890 SdHoareTripleChecker+Invalid, 3632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:14,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7928 Valid, 18890 Invalid, 3632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3467 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:30:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-12-25 17:30:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 2942. [2023-12-25 17:30:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2941 states have (on average 1.6647398843930636) internal successors, (4896), 2941 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 4896 transitions. [2023-12-25 17:30:14,389 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 4896 transitions. Word has length 1817 [2023-12-25 17:30:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:14,390 INFO L495 AbstractCegarLoop]: Abstraction has 2942 states and 4896 transitions. [2023-12-25 17:30:14,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 336.8) internal successors, (1684), 5 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 4896 transitions. [2023-12-25 17:30:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1819 [2023-12-25 17:30:14,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:14,414 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:14,436 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 17:30:14,626 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 17:30:14,627 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:14,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash 380904845, now seen corresponding path program 1 times [2023-12-25 17:30:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:14,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434159947] [2023-12-25 17:30:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:14,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:14,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358824765] [2023-12-25 17:30:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:14,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:14,728 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 17:30:14,747 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 17:30:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:16,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 7467 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:30:16,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 42 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:16,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-25 17:30:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434159947] [2023-12-25 17:30:16,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358824765] [2023-12-25 17:30:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358824765] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:30:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168378883] [2023-12-25 17:30:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:30:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:30:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:30:16,670 INFO L87 Difference]: Start difference. First operand 2942 states and 4896 transitions. Second operand has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:20,159 INFO L93 Difference]: Finished difference Result 13268 states and 22024 transitions. [2023-12-25 17:30:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:30:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 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 1818 [2023-12-25 17:30:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:20,169 INFO L225 Difference]: With dead ends: 13268 [2023-12-25 17:30:20,169 INFO L226 Difference]: Without dead ends: 8135 [2023-12-25 17:30:20,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3637 GetRequests, 3624 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:30:20,175 INFO L413 NwaCegarLoop]: 7623 mSDtfsCounter, 19614 mSDsluCounter, 18431 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19614 SdHoareTripleChecker+Valid, 26054 SdHoareTripleChecker+Invalid, 5452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:20,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19614 Valid, 26054 Invalid, 5452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [169 Valid, 5283 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-25 17:30:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2023-12-25 17:30:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 2947. [2023-12-25 17:30:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2946 states have (on average 1.6642905634758995) internal successors, (4903), 2946 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 4903 transitions. [2023-12-25 17:30:20,217 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 4903 transitions. Word has length 1818 [2023-12-25 17:30:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:20,217 INFO L495 AbstractCegarLoop]: Abstraction has 2947 states and 4903 transitions. [2023-12-25 17:30:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 4903 transitions. [2023-12-25 17:30:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1820 [2023-12-25 17:30:20,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:20,237 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:20,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 17:30:20,458 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 17:30:20,459 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:20,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2054712445, now seen corresponding path program 1 times [2023-12-25 17:30:20,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:20,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156061308] [2023-12-25 17:30:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:20,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:20,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921596124] [2023-12-25 17:30:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:20,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:20,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:20,629 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 17:30:20,654 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 17:30:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:22,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 7470 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:22,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 46 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:22,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-25 17:30:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156061308] [2023-12-25 17:30:22,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921596124] [2023-12-25 17:30:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921596124] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415882579] [2023-12-25 17:30:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:22,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:22,516 INFO L87 Difference]: Start difference. First operand 2947 states and 4903 transitions. Second operand has 5 states, 5 states have (on average 338.4) internal successors, (1692), 5 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:24,742 INFO L93 Difference]: Finished difference Result 10640 states and 17646 transitions. [2023-12-25 17:30:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:24,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 338.4) internal successors, (1692), 5 states have internal predecessors, (1692), 0 states have call successors, (0), 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 1819 [2023-12-25 17:30:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:24,748 INFO L225 Difference]: With dead ends: 10640 [2023-12-25 17:30:24,748 INFO L226 Difference]: Without dead ends: 5487 [2023-12-25 17:30:24,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3637 GetRequests, 3628 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:24,753 INFO L413 NwaCegarLoop]: 7612 mSDtfsCounter, 7914 mSDsluCounter, 11235 mSDsCounter, 0 mSdLazyCounter, 3459 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7914 SdHoareTripleChecker+Valid, 18847 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:24,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7914 Valid, 18847 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3459 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:30:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5487 states. [2023-12-25 17:30:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5487 to 2949. [2023-12-25 17:30:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 1.6638398914518318) internal successors, (4905), 2948 states have internal predecessors, (4905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4905 transitions. [2023-12-25 17:30:24,792 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4905 transitions. Word has length 1819 [2023-12-25 17:30:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:24,793 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4905 transitions. [2023-12-25 17:30:24,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.4) internal successors, (1692), 5 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4905 transitions. [2023-12-25 17:30:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1821 [2023-12-25 17:30:24,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:24,812 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:24,837 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 17:30:25,036 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 17:30:25,037 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:25,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 72875635, now seen corresponding path program 1 times [2023-12-25 17:30:25,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:25,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284007780] [2023-12-25 17:30:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:25,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578535683] [2023-12-25 17:30:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:25,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:25,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:25,142 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 17:30:25,160 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 17:30:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:26,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 7473 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:30:26,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 48 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:27,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-25 17:30:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284007780] [2023-12-25 17:30:27,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578535683] [2023-12-25 17:30:27,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578535683] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:27,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:27,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:30:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370291441] [2023-12-25 17:30:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:27,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:30:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:30:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:30:27,168 INFO L87 Difference]: Start difference. First operand 2949 states and 4905 transitions. Second operand has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:30,690 INFO L93 Difference]: Finished difference Result 13319 states and 22095 transitions. [2023-12-25 17:30:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:30:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 0 states have call successors, (0), 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 1820 [2023-12-25 17:30:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:30,697 INFO L225 Difference]: With dead ends: 13319 [2023-12-25 17:30:30,697 INFO L226 Difference]: Without dead ends: 8159 [2023-12-25 17:30:30,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3641 GetRequests, 3628 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:30:30,700 INFO L413 NwaCegarLoop]: 7602 mSDtfsCounter, 15865 mSDsluCounter, 18412 mSDsCounter, 0 mSdLazyCounter, 5275 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15865 SdHoareTripleChecker+Valid, 26014 SdHoareTripleChecker+Invalid, 5444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 5275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:30,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15865 Valid, 26014 Invalid, 5444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 5275 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 17:30:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2023-12-25 17:30:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 2954. [2023-12-25 17:30:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2953 states have (on average 1.6633931594988147) internal successors, (4912), 2953 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4912 transitions. [2023-12-25 17:30:30,732 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4912 transitions. Word has length 1820 [2023-12-25 17:30:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:30,733 INFO L495 AbstractCegarLoop]: Abstraction has 2954 states and 4912 transitions. [2023-12-25 17:30:30,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4912 transitions. [2023-12-25 17:30:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1822 [2023-12-25 17:30:30,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:30,755 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:30,776 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 17:30:30,956 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 17:30:30,956 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:30,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1342441159, now seen corresponding path program 1 times [2023-12-25 17:30:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:30,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662053897] [2023-12-25 17:30:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:30,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:31,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802709414] [2023-12-25 17:30:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:31,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:31,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:31,085 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 17:30:31,105 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 17:30:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:32,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 7477 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:32,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 52 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:32,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-25 17:30:32,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:32,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662053897] [2023-12-25 17:30:32,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:32,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802709414] [2023-12-25 17:30:32,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802709414] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:32,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:32,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237014578] [2023-12-25 17:30:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:32,995 INFO L87 Difference]: Start difference. First operand 2954 states and 4912 transitions. Second operand has 5 states, 5 states have (on average 340.4) internal successors, (1702), 5 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:34,909 INFO L93 Difference]: Finished difference Result 10678 states and 17698 transitions. [2023-12-25 17:30:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:34,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 340.4) internal successors, (1702), 5 states have internal predecessors, (1702), 0 states have call successors, (0), 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 1821 [2023-12-25 17:30:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:34,915 INFO L225 Difference]: With dead ends: 10678 [2023-12-25 17:30:34,915 INFO L226 Difference]: Without dead ends: 5495 [2023-12-25 17:30:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3641 GetRequests, 3632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:34,919 INFO L413 NwaCegarLoop]: 7586 mSDtfsCounter, 11613 mSDsluCounter, 7432 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11613 SdHoareTripleChecker+Valid, 15018 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:34,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11613 Valid, 15018 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:30:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2023-12-25 17:30:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 2959. [2023-12-25 17:30:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2958 states have (on average 1.662947937795808) internal successors, (4919), 2958 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4919 transitions. [2023-12-25 17:30:34,944 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4919 transitions. Word has length 1821 [2023-12-25 17:30:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:34,945 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4919 transitions. [2023-12-25 17:30:34,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 340.4) internal successors, (1702), 5 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4919 transitions. [2023-12-25 17:30:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1823 [2023-12-25 17:30:34,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:34,964 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:34,984 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 17:30:35,166 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 17:30:35,167 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:35,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash 308943809, now seen corresponding path program 1 times [2023-12-25 17:30:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:35,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578549094] [2023-12-25 17:30:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:35,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389272761] [2023-12-25 17:30:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:35,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:35,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:35,272 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 17:30:35,276 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 17:30:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:36,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 7480 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:36,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 56 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:37,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-25 17:30:37,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:37,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578549094] [2023-12-25 17:30:37,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:37,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389272761] [2023-12-25 17:30:37,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389272761] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:37,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:37,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817553032] [2023-12-25 17:30:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:37,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:37,349 INFO L87 Difference]: Start difference. First operand 2959 states and 4919 transitions. Second operand has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:39,528 INFO L93 Difference]: Finished difference Result 10699 states and 17727 transitions. [2023-12-25 17:30:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 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 1822 [2023-12-25 17:30:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:39,534 INFO L225 Difference]: With dead ends: 10699 [2023-12-25 17:30:39,534 INFO L226 Difference]: Without dead ends: 5496 [2023-12-25 17:30:39,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3643 GetRequests, 3634 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:39,538 INFO L413 NwaCegarLoop]: 7578 mSDtfsCounter, 7912 mSDsluCounter, 10964 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7912 SdHoareTripleChecker+Valid, 18542 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:39,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7912 Valid, 18542 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 17:30:39,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2023-12-25 17:30:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 2961. [2023-12-25 17:30:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2960 states have (on average 1.6625) internal successors, (4921), 2960 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4921 transitions. [2023-12-25 17:30:39,568 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4921 transitions. Word has length 1822 [2023-12-25 17:30:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:39,569 INFO L495 AbstractCegarLoop]: Abstraction has 2961 states and 4921 transitions. [2023-12-25 17:30:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4921 transitions. [2023-12-25 17:30:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1824 [2023-12-25 17:30:39,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:39,588 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:39,608 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 17:30:39,789 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 17:30:39,789 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1605393875, now seen corresponding path program 1 times [2023-12-25 17:30:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:39,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284126060] [2023-12-25 17:30:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:39,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731979254] [2023-12-25 17:30:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:39,887 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 17:30:39,888 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 17:30:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:41,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 7483 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:41,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 58 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:41,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-25 17:30:41,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284126060] [2023-12-25 17:30:41,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731979254] [2023-12-25 17:30:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731979254] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268972799] [2023-12-25 17:30:41,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:41,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:41,866 INFO L87 Difference]: Start difference. First operand 2961 states and 4921 transitions. Second operand has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:43,776 INFO L93 Difference]: Finished difference Result 10710 states and 17740 transitions. [2023-12-25 17:30:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 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 1823 [2023-12-25 17:30:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:43,782 INFO L225 Difference]: With dead ends: 10710 [2023-12-25 17:30:43,782 INFO L226 Difference]: Without dead ends: 5500 [2023-12-25 17:30:43,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3645 GetRequests, 3636 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:43,786 INFO L413 NwaCegarLoop]: 7565 mSDtfsCounter, 11593 mSDsluCounter, 7421 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11593 SdHoareTripleChecker+Valid, 14986 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:43,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11593 Valid, 14986 Invalid, 2676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:30:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2023-12-25 17:30:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 2966. [2023-12-25 17:30:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 1.6620573355817876) internal successors, (4928), 2965 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4928 transitions. [2023-12-25 17:30:43,814 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4928 transitions. Word has length 1823 [2023-12-25 17:30:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:43,815 INFO L495 AbstractCegarLoop]: Abstraction has 2966 states and 4928 transitions. [2023-12-25 17:30:43,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4928 transitions. [2023-12-25 17:30:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1825 [2023-12-25 17:30:43,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:43,838 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:43,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-25 17:30:44,039 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 17:30:44,039 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:44,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1558607667, now seen corresponding path program 1 times [2023-12-25 17:30:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:44,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561088621] [2023-12-25 17:30:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:44,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:44,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458503035] [2023-12-25 17:30:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:44,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:44,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:44,140 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 17:30:44,144 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 17:30:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:45,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 7486 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:45,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:46,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-25 17:30:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561088621] [2023-12-25 17:30:46,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458503035] [2023-12-25 17:30:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458503035] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:46,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:46,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79634861] [2023-12-25 17:30:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:46,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:46,172 INFO L87 Difference]: Start difference. First operand 2966 states and 4928 transitions. Second operand has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:48,107 INFO L93 Difference]: Finished difference Result 10737 states and 17779 transitions. [2023-12-25 17:30:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 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 1824 [2023-12-25 17:30:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:48,113 INFO L225 Difference]: With dead ends: 10737 [2023-12-25 17:30:48,113 INFO L226 Difference]: Without dead ends: 5504 [2023-12-25 17:30:48,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3647 GetRequests, 3638 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:48,117 INFO L413 NwaCegarLoop]: 7552 mSDtfsCounter, 11581 mSDsluCounter, 7415 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11581 SdHoareTripleChecker+Valid, 14967 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:48,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11581 Valid, 14967 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:30:48,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2023-12-25 17:30:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 2971. [2023-12-25 17:30:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2970 states have (on average 1.6616161616161615) internal successors, (4935), 2970 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4935 transitions. [2023-12-25 17:30:48,147 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4935 transitions. Word has length 1824 [2023-12-25 17:30:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:48,148 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 4935 transitions. [2023-12-25 17:30:48,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4935 transitions. [2023-12-25 17:30:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2023-12-25 17:30:48,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:48,167 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:48,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-25 17:30:48,368 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 17:30:48,368 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:48,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash -990547513, now seen corresponding path program 1 times [2023-12-25 17:30:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:48,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530385879] [2023-12-25 17:30:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:48,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881341537] [2023-12-25 17:30:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:48,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:48,471 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 17:30:48,475 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 17:30:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:50,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 7489 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:50,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:50,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-25 17:30:50,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530385879] [2023-12-25 17:30:50,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881341537] [2023-12-25 17:30:50,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881341537] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:50,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:50,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112888219] [2023-12-25 17:30:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:50,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:50,398 INFO L87 Difference]: Start difference. First operand 2971 states and 4935 transitions. Second operand has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:52,620 INFO L93 Difference]: Finished difference Result 10758 states and 17808 transitions. [2023-12-25 17:30:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 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 1825 [2023-12-25 17:30:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:52,627 INFO L225 Difference]: With dead ends: 10758 [2023-12-25 17:30:52,627 INFO L226 Difference]: Without dead ends: 5505 [2023-12-25 17:30:52,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3649 GetRequests, 3640 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:52,631 INFO L413 NwaCegarLoop]: 7544 mSDtfsCounter, 7870 mSDsluCounter, 11167 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7870 SdHoareTripleChecker+Valid, 18711 SdHoareTripleChecker+Invalid, 3592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:52,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7870 Valid, 18711 Invalid, 3592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 17:30:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2023-12-25 17:30:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 2973. [2023-12-25 17:30:52,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 2972 states have (on average 1.661170928667564) internal successors, (4937), 2972 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 4937 transitions. [2023-12-25 17:30:52,664 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 4937 transitions. Word has length 1825 [2023-12-25 17:30:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:52,665 INFO L495 AbstractCegarLoop]: Abstraction has 2973 states and 4937 transitions. [2023-12-25 17:30:52,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 4937 transitions. [2023-12-25 17:30:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1827 [2023-12-25 17:30:52,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:52,687 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:52,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-25 17:30:52,887 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 17:30:52,888 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:52,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash 394864113, now seen corresponding path program 1 times [2023-12-25 17:30:52,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:52,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667041825] [2023-12-25 17:30:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:52,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:52,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:52,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957572740] [2023-12-25 17:30:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:52,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:52,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:52,992 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 17:30:52,995 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 17:30:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:54,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 7493 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:30:54,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 68 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:54,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-25 17:30:54,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667041825] [2023-12-25 17:30:54,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957572740] [2023-12-25 17:30:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957572740] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:54,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:30:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971053327] [2023-12-25 17:30:54,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:54,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:54,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:30:54,988 INFO L87 Difference]: Start difference. First operand 2973 states and 4937 transitions. Second operand has 5 states, 5 states have (on average 344.6) internal successors, (1723), 5 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:56,909 INFO L93 Difference]: Finished difference Result 10769 states and 17821 transitions. [2023-12-25 17:30:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:30:56,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 344.6) internal successors, (1723), 5 states have internal predecessors, (1723), 0 states have call successors, (0), 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 1826 [2023-12-25 17:30:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:56,915 INFO L225 Difference]: With dead ends: 10769 [2023-12-25 17:30:56,915 INFO L226 Difference]: Without dead ends: 5509 [2023-12-25 17:30:56,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3651 GetRequests, 3642 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:30:56,918 INFO L413 NwaCegarLoop]: 7531 mSDtfsCounter, 11537 mSDsluCounter, 7405 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11537 SdHoareTripleChecker+Valid, 14936 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:56,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11537 Valid, 14936 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 17:30:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2023-12-25 17:30:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 2978. [2023-12-25 17:30:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 1.660732280819617) internal successors, (4944), 2977 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4944 transitions. [2023-12-25 17:30:56,947 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 4944 transitions. Word has length 1826 [2023-12-25 17:30:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:56,948 INFO L495 AbstractCegarLoop]: Abstraction has 2978 states and 4944 transitions. [2023-12-25 17:30:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 344.6) internal successors, (1723), 5 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 4944 transitions. [2023-12-25 17:30:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1828 [2023-12-25 17:30:56,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:56,968 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:56,991 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 17:30:57,169 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 17:30:57,169 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:57,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1909901511, now seen corresponding path program 1 times [2023-12-25 17:30:57,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:57,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481026744] [2023-12-25 17:30:57,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:57,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:30:57,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087422013] [2023-12-25 17:30:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:57,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:57,274 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 17:30:57,292 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 17:30:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:58,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 7496 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:30:58,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 72 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:59,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-25 17:30:59,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481026744] [2023-12-25 17:30:59,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:30:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087422013] [2023-12-25 17:30:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087422013] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:59,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:59,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:30:59,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067111235] [2023-12-25 17:30:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:30:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:30:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:30:59,251 INFO L87 Difference]: Start difference. First operand 2978 states and 4944 transitions. Second operand has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:02,929 INFO L93 Difference]: Finished difference Result 13526 states and 22390 transitions. [2023-12-25 17:31:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:31:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 1827 [2023-12-25 17:31:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:02,941 INFO L225 Difference]: With dead ends: 13526 [2023-12-25 17:31:02,941 INFO L226 Difference]: Without dead ends: 8243 [2023-12-25 17:31:02,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3655 GetRequests, 3642 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:31:02,946 INFO L413 NwaCegarLoop]: 7521 mSDtfsCounter, 12138 mSDsluCounter, 21853 mSDsCounter, 0 mSdLazyCounter, 5900 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12138 SdHoareTripleChecker+Valid, 29374 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 5900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:02,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12138 Valid, 29374 Invalid, 6068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 5900 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 17:31:02,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8243 states. [2023-12-25 17:31:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8243 to 2983. [2023-12-25 17:31:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2982 states have (on average 1.6602951039570757) internal successors, (4951), 2982 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 4951 transitions. [2023-12-25 17:31:03,047 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 4951 transitions. Word has length 1827 [2023-12-25 17:31:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:03,048 INFO L495 AbstractCegarLoop]: Abstraction has 2983 states and 4951 transitions. [2023-12-25 17:31:03,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 4951 transitions. [2023-12-25 17:31:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1829 [2023-12-25 17:31:03,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:03,068 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:03,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-25 17:31:03,269 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 17:31:03,270 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:03,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1917898875, now seen corresponding path program 1 times [2023-12-25 17:31:03,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:03,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710870585] [2023-12-25 17:31:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:03,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752452609] [2023-12-25 17:31:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:03,379 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 17:31:03,399 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 17:31:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:04,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 7500 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:31:04,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:05,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-25 17:31:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710870585] [2023-12-25 17:31:05,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752452609] [2023-12-25 17:31:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752452609] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:05,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:05,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:31:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709062251] [2023-12-25 17:31:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:31:05,326 INFO L87 Difference]: Start difference. First operand 2983 states and 4951 transitions. Second operand has 5 states, 5 states have (on average 346.2) internal successors, (1731), 5 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:07,473 INFO L93 Difference]: Finished difference Result 10813 states and 17883 transitions. [2023-12-25 17:31:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:07,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 346.2) internal successors, (1731), 5 states have internal predecessors, (1731), 0 states have call successors, (0), 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 1828 [2023-12-25 17:31:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:07,479 INFO L225 Difference]: With dead ends: 10813 [2023-12-25 17:31:07,479 INFO L226 Difference]: Without dead ends: 5510 [2023-12-25 17:31:07,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3655 GetRequests, 3646 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:07,483 INFO L413 NwaCegarLoop]: 7510 mSDtfsCounter, 7870 mSDsluCounter, 10916 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7870 SdHoareTripleChecker+Valid, 18426 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:07,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7870 Valid, 18426 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 17:31:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2023-12-25 17:31:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 2985. [2023-12-25 17:31:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:07,518 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1828 [2023-12-25 17:31:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:07,520 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 346.2) internal successors, (1731), 5 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1830 [2023-12-25 17:31:07,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:07,543 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:07,566 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 17:31:07,765 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 17:31:07,766 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:07,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1627357329, now seen corresponding path program 1 times [2023-12-25 17:31:07,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:07,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292181385] [2023-12-25 17:31:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:07,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764009897] [2023-12-25 17:31:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:07,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:07,861 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 17:31:07,865 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 17:31:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:09,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 7503 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:31:09,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 72 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:09,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-25 17:31:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292181385] [2023-12-25 17:31:09,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764009897] [2023-12-25 17:31:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764009897] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:09,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463195161] [2023-12-25 17:31:09,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:09,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:09,704 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:09,868 INFO L93 Difference]: Finished difference Result 10993 states and 18238 transitions. [2023-12-25 17:31:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:09,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 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 1829 [2023-12-25 17:31:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:09,877 INFO L225 Difference]: With dead ends: 10993 [2023-12-25 17:31:09,877 INFO L226 Difference]: Without dead ends: 8248 [2023-12-25 17:31:09,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3656 GetRequests, 3647 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:09,881 INFO L413 NwaCegarLoop]: 8912 mSDtfsCounter, 8436 mSDsluCounter, 22207 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8436 SdHoareTripleChecker+Valid, 31119 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:09,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8436 Valid, 31119 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2023-12-25 17:31:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 2985. [2023-12-25 17:31:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:09,930 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1829 [2023-12-25 17:31:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:09,931 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:09,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1831 [2023-12-25 17:31:09,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:09,980 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:10,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-25 17:31:10,180 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 17:31:10,181 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:10,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2133180097, now seen corresponding path program 1 times [2023-12-25 17:31:10,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:10,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134078313] [2023-12-25 17:31:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:10,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:10,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105603826] [2023-12-25 17:31:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:10,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:10,277 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 17:31:10,277 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 17:31:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:11,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 7506 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:31:11,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 68 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:12,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 17:31:12,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134078313] [2023-12-25 17:31:12,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105603826] [2023-12-25 17:31:12,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105603826] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:12,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:12,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:31:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846340156] [2023-12-25 17:31:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:12,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:31:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:31:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:12,095 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 4 states, 4 states have (on average 432.25) internal successors, (1729), 4 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:12,167 INFO L93 Difference]: Finished difference Result 8263 states and 13708 transitions. [2023-12-25 17:31:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:31:12,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 432.25) internal successors, (1729), 4 states have internal predecessors, (1729), 0 states have call successors, (0), 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 1830 [2023-12-25 17:31:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:12,173 INFO L225 Difference]: With dead ends: 8263 [2023-12-25 17:31:12,173 INFO L226 Difference]: Without dead ends: 5524 [2023-12-25 17:31:12,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3658 GetRequests, 3651 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:12,175 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 4183 mSDsluCounter, 9058 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4183 SdHoareTripleChecker+Valid, 13723 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:12,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4183 Valid, 13723 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2023-12-25 17:31:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 2985. [2023-12-25 17:31:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:12,204 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1830 [2023-12-25 17:31:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:12,205 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:12,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 432.25) internal successors, (1729), 4 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2023-12-25 17:31:12,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:12,227 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, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:12,254 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 17:31:12,440 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 17:31:12,440 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash 726361233, now seen corresponding path program 1 times [2023-12-25 17:31:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830891855] [2023-12-25 17:31:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:12,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280606821] [2023-12-25 17:31:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:12,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:12,537 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 17:31:12,552 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 17:31:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:14,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 7509 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:31:14,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:14,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-25 17:31:14,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:14,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830891855] [2023-12-25 17:31:14,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:14,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280606821] [2023-12-25 17:31:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280606821] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:14,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142750495] [2023-12-25 17:31:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:14,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:14,423 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:14,591 INFO L93 Difference]: Finished difference Result 10978 states and 18213 transitions. [2023-12-25 17:31:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:14,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 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 1831 [2023-12-25 17:31:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:14,600 INFO L225 Difference]: With dead ends: 10978 [2023-12-25 17:31:14,600 INFO L226 Difference]: Without dead ends: 8248 [2023-12-25 17:31:14,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3660 GetRequests, 3651 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:14,603 INFO L413 NwaCegarLoop]: 8937 mSDtfsCounter, 8445 mSDsluCounter, 22257 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8445 SdHoareTripleChecker+Valid, 31194 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:14,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8445 Valid, 31194 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2023-12-25 17:31:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 2985. [2023-12-25 17:31:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:14,638 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1831 [2023-12-25 17:31:14,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:14,639 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:14,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:14,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1833 [2023-12-25 17:31:14,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:14,659 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, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:14,678 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 17:31:14,859 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 17:31:14,859 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:14,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 37172073, now seen corresponding path program 1 times [2023-12-25 17:31:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784846678] [2023-12-25 17:31:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:14,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:14,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980863071] [2023-12-25 17:31:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:14,956 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 17:31:14,958 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 17:31:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:16,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 7512 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:31:16,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 58 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:16,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-25 17:31:16,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784846678] [2023-12-25 17:31:16,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980863071] [2023-12-25 17:31:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980863071] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:16,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822997708] [2023-12-25 17:31:16,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:16,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:16,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:16,836 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:16,966 INFO L93 Difference]: Finished difference Result 10975 states and 18208 transitions. [2023-12-25 17:31:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 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 1832 [2023-12-25 17:31:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:16,974 INFO L225 Difference]: With dead ends: 10975 [2023-12-25 17:31:16,975 INFO L226 Difference]: Without dead ends: 8251 [2023-12-25 17:31:16,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3662 GetRequests, 3653 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:16,978 INFO L413 NwaCegarLoop]: 8947 mSDtfsCounter, 8448 mSDsluCounter, 22277 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8448 SdHoareTripleChecker+Valid, 31224 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:16,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8448 Valid, 31224 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2023-12-25 17:31:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 2985. [2023-12-25 17:31:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:17,030 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1832 [2023-12-25 17:31:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:17,032 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1834 [2023-12-25 17:31:17,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:17,056 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, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:17,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-25 17:31:17,272 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 17:31:17,272 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:17,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:17,273 INFO L85 PathProgramCache]: Analyzing trace with hash 444466703, now seen corresponding path program 1 times [2023-12-25 17:31:17,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612659538] [2023-12-25 17:31:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:17,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:17,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087106655] [2023-12-25 17:31:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:17,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:17,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:17,371 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 17:31:17,372 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 17:31:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:18,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 7516 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:31:18,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 52 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:19,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-25 17:31:19,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612659538] [2023-12-25 17:31:19,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:19,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087106655] [2023-12-25 17:31:19,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087106655] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:19,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:19,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:31:19,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070643340] [2023-12-25 17:31:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:31:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:31:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:19,201 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:19,272 INFO L93 Difference]: Finished difference Result 8263 states and 13708 transitions. [2023-12-25 17:31:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:31:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 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 1833 [2023-12-25 17:31:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:19,277 INFO L225 Difference]: With dead ends: 8263 [2023-12-25 17:31:19,277 INFO L226 Difference]: Without dead ends: 5548 [2023-12-25 17:31:19,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3664 GetRequests, 3657 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:19,279 INFO L413 NwaCegarLoop]: 4705 mSDtfsCounter, 4198 mSDsluCounter, 9098 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4198 SdHoareTripleChecker+Valid, 13803 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:19,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4198 Valid, 13803 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2023-12-25 17:31:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 2985. [2023-12-25 17:31:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:19,307 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1833 [2023-12-25 17:31:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:19,308 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1835 [2023-12-25 17:31:19,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:19,331 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, 2, 2, 2, 2, 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, 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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] [2023-12-25 17:31:19,356 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 17:31:19,544 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 17:31:19,545 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:19,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1671854331, now seen corresponding path program 1 times [2023-12-25 17:31:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:19,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245828774] [2023-12-25 17:31:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:19,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:19,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:19,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940898307] [2023-12-25 17:31:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:19,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:19,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:19,644 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 17:31:19,647 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 17:31:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:21,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 7519 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:31:21,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 48 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:21,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-25 17:31:21,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:21,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245828774] [2023-12-25 17:31:21,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:21,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940898307] [2023-12-25 17:31:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940898307] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:21,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:31:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741571909] [2023-12-25 17:31:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:21,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:31:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:31:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:21,461 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:21,568 INFO L93 Difference]: Finished difference Result 8263 states and 13708 transitions. [2023-12-25 17:31:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:31:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 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 1834 [2023-12-25 17:31:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:21,575 INFO L225 Difference]: With dead ends: 8263 [2023-12-25 17:31:21,575 INFO L226 Difference]: Without dead ends: 5554 [2023-12-25 17:31:21,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3666 GetRequests, 3659 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:21,577 INFO L413 NwaCegarLoop]: 4715 mSDtfsCounter, 4201 mSDsluCounter, 9108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 13823 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:21,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4201 Valid, 13823 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2023-12-25 17:31:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 2985. [2023-12-25 17:31:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:21,610 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1834 [2023-12-25 17:31:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:21,611 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:21,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1836 [2023-12-25 17:31:21,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:21,633 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, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:21,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-25 17:31:21,834 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 17:31:21,834 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:21,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1823565643, now seen corresponding path program 1 times [2023-12-25 17:31:21,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:21,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409981244] [2023-12-25 17:31:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:21,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:21,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427429529] [2023-12-25 17:31:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:21,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:21,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:21,934 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 17:31:21,944 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 17:31:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:23,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 7522 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:31:23,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 42 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:23,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-25 17:31:23,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409981244] [2023-12-25 17:31:23,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:23,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427429529] [2023-12-25 17:31:23,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427429529] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:23,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:23,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:23,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189743143] [2023-12-25 17:31:23,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:23,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:23,793 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 344.2) internal successors, (1721), 5 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:23,933 INFO L93 Difference]: Finished difference Result 10948 states and 18163 transitions. [2023-12-25 17:31:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 344.2) internal successors, (1721), 5 states have internal predecessors, (1721), 0 states have call successors, (0), 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 1835 [2023-12-25 17:31:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:23,945 INFO L225 Difference]: With dead ends: 10948 [2023-12-25 17:31:23,945 INFO L226 Difference]: Without dead ends: 8248 [2023-12-25 17:31:23,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3668 GetRequests, 3659 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:23,950 INFO L413 NwaCegarLoop]: 8987 mSDtfsCounter, 8463 mSDsluCounter, 22357 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8463 SdHoareTripleChecker+Valid, 31344 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:23,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8463 Valid, 31344 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2023-12-25 17:31:23,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 2985. [2023-12-25 17:31:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:23,990 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1835 [2023-12-25 17:31:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:23,991 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:23,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 344.2) internal successors, (1721), 5 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1837 [2023-12-25 17:31:24,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:24,010 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, 2, 2, 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, 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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] [2023-12-25 17:31:24,030 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 17:31:24,211 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 17:31:24,211 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:24,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1923287661, now seen corresponding path program 1 times [2023-12-25 17:31:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552934630] [2023-12-25 17:31:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:24,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:24,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344211739] [2023-12-25 17:31:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:24,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:24,320 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 17:31:24,320 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 17:31:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:25,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 7526 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:31:25,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 38 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:26,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-25 17:31:26,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552934630] [2023-12-25 17:31:26,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344211739] [2023-12-25 17:31:26,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344211739] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:26,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:26,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656783740] [2023-12-25 17:31:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:26,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:26,206 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:26,344 INFO L93 Difference]: Finished difference Result 10945 states and 18158 transitions. [2023-12-25 17:31:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 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 1836 [2023-12-25 17:31:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:26,354 INFO L225 Difference]: With dead ends: 10945 [2023-12-25 17:31:26,354 INFO L226 Difference]: Without dead ends: 8251 [2023-12-25 17:31:26,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3670 GetRequests, 3661 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:26,358 INFO L413 NwaCegarLoop]: 8997 mSDtfsCounter, 8466 mSDsluCounter, 22377 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8466 SdHoareTripleChecker+Valid, 31374 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:26,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8466 Valid, 31374 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2023-12-25 17:31:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 2985. [2023-12-25 17:31:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:26,395 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1836 [2023-12-25 17:31:26,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:26,395 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:26,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1838 [2023-12-25 17:31:26,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:26,418 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, 2, 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, 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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] [2023-12-25 17:31:26,444 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 17:31:26,644 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 17:31:26,645 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:26,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1444510921, now seen corresponding path program 1 times [2023-12-25 17:31:26,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:26,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655567466] [2023-12-25 17:31:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:26,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177321206] [2023-12-25 17:31:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:26,741 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 17:31:26,777 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 17:31:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:28,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 7529 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:31:28,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 32 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:28,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-25 17:31:28,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:28,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655567466] [2023-12-25 17:31:28,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:28,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177321206] [2023-12-25 17:31:28,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177321206] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:28,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:28,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:28,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304555198] [2023-12-25 17:31:28,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:28,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:28,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:28,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:28,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:28,624 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:28,759 INFO L93 Difference]: Finished difference Result 10933 states and 18138 transitions. [2023-12-25 17:31:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 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 1837 [2023-12-25 17:31:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:28,769 INFO L225 Difference]: With dead ends: 10933 [2023-12-25 17:31:28,769 INFO L226 Difference]: Without dead ends: 8248 [2023-12-25 17:31:28,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3672 GetRequests, 3663 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:28,774 INFO L413 NwaCegarLoop]: 9012 mSDtfsCounter, 8472 mSDsluCounter, 22407 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8472 SdHoareTripleChecker+Valid, 31419 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:28,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8472 Valid, 31419 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2023-12-25 17:31:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 2985. [2023-12-25 17:31:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:28,817 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1837 [2023-12-25 17:31:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:28,818 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:28,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1839 [2023-12-25 17:31:28,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:28,837 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:28,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-25 17:31:29,038 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 17:31:29,038 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:29,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash 49974347, now seen corresponding path program 1 times [2023-12-25 17:31:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:29,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602718441] [2023-12-25 17:31:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:29,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:29,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949027385] [2023-12-25 17:31:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:29,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:29,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:29,138 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 17:31:29,140 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 17:31:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:30,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 7532 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:31:30,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 28 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:30,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-25 17:31:30,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:30,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602718441] [2023-12-25 17:31:30,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:30,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949027385] [2023-12-25 17:31:30,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949027385] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:30,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:30,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:31:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191902675] [2023-12-25 17:31:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:30,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:31:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:31:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:30,963 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 4 states, 4 states have (on average 429.25) internal successors, (1717), 4 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:31,039 INFO L93 Difference]: Finished difference Result 8263 states and 13708 transitions. [2023-12-25 17:31:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:31:31,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 429.25) internal successors, (1717), 4 states have internal predecessors, (1717), 0 states have call successors, (0), 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 1838 [2023-12-25 17:31:31,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:31,046 INFO L225 Difference]: With dead ends: 8263 [2023-12-25 17:31:31,047 INFO L226 Difference]: Without dead ends: 5584 [2023-12-25 17:31:31,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3674 GetRequests, 3667 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:31:31,050 INFO L413 NwaCegarLoop]: 4765 mSDtfsCounter, 4219 mSDsluCounter, 9158 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 13923 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:31,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 13923 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2023-12-25 17:31:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 2985. [2023-12-25 17:31:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:31,084 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1838 [2023-12-25 17:31:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 429.25) internal successors, (1717), 4 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1840 [2023-12-25 17:31:31,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:31,104 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:31,124 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 17:31:31,304 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 17:31:31,305 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:31,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:31,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1463671625, now seen corresponding path program 1 times [2023-12-25 17:31:31,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751997973] [2023-12-25 17:31:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:31,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:31,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:31,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221784067] [2023-12-25 17:31:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:31,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:31,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:31,400 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 17:31:31,401 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 17:31:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:32,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 7535 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:31:33,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:33,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-25 17:31:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751997973] [2023-12-25 17:31:33,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221784067] [2023-12-25 17:31:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221784067] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:31:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:31:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755302888] [2023-12-25 17:31:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:31:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:31:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:33,328 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:33,461 INFO L93 Difference]: Finished difference Result 10921 states and 18118 transitions. [2023-12-25 17:31:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:31:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 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 1839 [2023-12-25 17:31:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:33,470 INFO L225 Difference]: With dead ends: 10921 [2023-12-25 17:31:33,470 INFO L226 Difference]: Without dead ends: 8251 [2023-12-25 17:31:33,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3676 GetRequests, 3667 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:31:33,473 INFO L413 NwaCegarLoop]: 9037 mSDtfsCounter, 8481 mSDsluCounter, 22457 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8481 SdHoareTripleChecker+Valid, 31494 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:33,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8481 Valid, 31494 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:31:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2023-12-25 17:31:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 2985. [2023-12-25 17:31:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2984 states have (on average 1.65985254691689) internal successors, (4953), 2984 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4953 transitions. [2023-12-25 17:31:33,511 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4953 transitions. Word has length 1839 [2023-12-25 17:31:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:33,512 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4953 transitions. [2023-12-25 17:31:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4953 transitions. [2023-12-25 17:31:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1841 [2023-12-25 17:31:33,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:33,531 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:33,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-25 17:31:33,732 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 17:31:33,732 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:33,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash 202028277, now seen corresponding path program 1 times [2023-12-25 17:31:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789863894] [2023-12-25 17:31:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:33,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:33,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:33,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518525651] [2023-12-25 17:31:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:33,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:33,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:33,827 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 17:31:33,828 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 17:31:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:35,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 17:31:35,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:35,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:31:35,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789863894] [2023-12-25 17:31:35,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518525651] [2023-12-25 17:31:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518525651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:31:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:31:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:31:35,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307696676] [2023-12-25 17:31:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:31:35,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:31:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:31:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:31:35,501 INFO L87 Difference]: Start difference. First operand 2985 states and 4953 transitions. Second operand has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:35,651 INFO L93 Difference]: Finished difference Result 8274 states and 13722 transitions. [2023-12-25 17:31:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:31:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 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 1840 [2023-12-25 17:31:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:35,656 INFO L225 Difference]: With dead ends: 8274 [2023-12-25 17:31:35,657 INFO L226 Difference]: Without dead ends: 5629 [2023-12-25 17:31:35,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1842 GetRequests, 1836 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:31:35,659 INFO L413 NwaCegarLoop]: 7025 mSDtfsCounter, 4258 mSDsluCounter, 25445 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 32470 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:35,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 32470 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:31:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2023-12-25 17:31:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 2990. [2023-12-25 17:31:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2989 states have (on average 1.6587487453997993) internal successors, (4958), 2989 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4958 transitions. [2023-12-25 17:31:35,693 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4958 transitions. Word has length 1840 [2023-12-25 17:31:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:35,693 INFO L495 AbstractCegarLoop]: Abstraction has 2990 states and 4958 transitions. [2023-12-25 17:31:35,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4958 transitions. [2023-12-25 17:31:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1841 [2023-12-25 17:31:35,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:35,713 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:35,742 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 17:31:35,928 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 17:31:35,928 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:35,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1036128755, now seen corresponding path program 1 times [2023-12-25 17:31:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:35,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039393495] [2023-12-25 17:31:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:36,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:36,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400553351] [2023-12-25 17:31:36,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:36,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:36,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:36,046 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 17:31:36,047 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 17:31:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:37,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 17:31:37,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:39,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 94 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039393495] [2023-12-25 17:31:44,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400553351] [2023-12-25 17:31:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400553351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:31:44,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:31:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-25 17:31:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845676223] [2023-12-25 17:31:44,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:31:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 17:31:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 17:31:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:31:44,049 INFO L87 Difference]: Start difference. First operand 2990 states and 4958 transitions. Second operand has 20 states, 20 states have (on average 178.25) internal successors, (3565), 20 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:48,283 INFO L93 Difference]: Finished difference Result 14059 states and 23309 transitions. [2023-12-25 17:31:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 17:31:48,284 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 178.25) internal successors, (3565), 20 states have internal predecessors, (3565), 0 states have call successors, (0), 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 1840 [2023-12-25 17:31:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:48,294 INFO L225 Difference]: With dead ends: 14059 [2023-12-25 17:31:48,294 INFO L226 Difference]: Without dead ends: 11409 [2023-12-25 17:31:48,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3700 GetRequests, 3665 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 17:31:48,298 INFO L413 NwaCegarLoop]: 8803 mSDtfsCounter, 37206 mSDsluCounter, 100478 mSDsCounter, 0 mSdLazyCounter, 5142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37206 SdHoareTripleChecker+Valid, 109281 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:48,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37206 Valid, 109281 Invalid, 5144 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 5142 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 17:31:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11409 states. [2023-12-25 17:31:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11409 to 6106. [2023-12-25 17:31:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 1.6591318591318591) internal successors, (10129), 6105 states have internal predecessors, (10129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 10129 transitions. [2023-12-25 17:31:48,381 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 10129 transitions. Word has length 1840 [2023-12-25 17:31:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:48,382 INFO L495 AbstractCegarLoop]: Abstraction has 6106 states and 10129 transitions. [2023-12-25 17:31:48,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 178.25) internal successors, (3565), 20 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 10129 transitions. [2023-12-25 17:31:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1842 [2023-12-25 17:31:48,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:48,404 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:31:48,432 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 17:31:48,604 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 17:31:48,605 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:48,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1903262221, now seen corresponding path program 1 times [2023-12-25 17:31:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:48,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109454580] [2023-12-25 17:31:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:48,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:31:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776760984] [2023-12-25 17:31:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:48,706 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 17:31:48,724 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 17:31:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:50,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 7541 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:31:50,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 94 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:52,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 94 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109454580] [2023-12-25 17:31:54,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:31:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776760984] [2023-12-25 17:31:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776760984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:31:54,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:31:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-25 17:31:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62248236] [2023-12-25 17:31:54,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:31:54,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 17:31:54,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 17:31:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:31:54,533 INFO L87 Difference]: Start difference. First operand 6106 states and 10129 transitions. Second operand has 16 states, 16 states have (on average 218.3125) internal successors, (3493), 16 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:16,393 INFO L93 Difference]: Finished difference Result 49863 states and 82687 transitions. [2023-12-25 17:32:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-25 17:32:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 218.3125) internal successors, (3493), 16 states have internal predecessors, (3493), 0 states have call successors, (0), 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 1841 [2023-12-25 17:32:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:16,433 INFO L225 Difference]: With dead ends: 49863 [2023-12-25 17:32:16,433 INFO L226 Difference]: Without dead ends: 44325 [2023-12-25 17:32:16,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3725 GetRequests, 3678 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 17:32:16,446 INFO L413 NwaCegarLoop]: 30352 mSDtfsCounter, 35760 mSDsluCounter, 162523 mSDsCounter, 0 mSdLazyCounter, 39422 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35760 SdHoareTripleChecker+Valid, 192875 SdHoareTripleChecker+Invalid, 39425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:16,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35760 Valid, 192875 Invalid, 39425 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3 Valid, 39422 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2023-12-25 17:32:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44325 states. [2023-12-25 17:32:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44325 to 9471. [2023-12-25 17:32:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9471 states, 9470 states have (on average 1.6591341077085533) internal successors, (15712), 9470 states have internal predecessors, (15712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9471 states to 9471 states and 15712 transitions. [2023-12-25 17:32:16,761 INFO L78 Accepts]: Start accepts. Automaton has 9471 states and 15712 transitions. Word has length 1841 [2023-12-25 17:32:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:16,762 INFO L495 AbstractCegarLoop]: Abstraction has 9471 states and 15712 transitions. [2023-12-25 17:32:16,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 218.3125) internal successors, (3493), 16 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9471 states and 15712 transitions. [2023-12-25 17:32:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1842 [2023-12-25 17:32:16,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:16,786 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:32:16,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-25 17:32:16,986 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 17:32:16,987 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:16,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 462772849, now seen corresponding path program 1 times [2023-12-25 17:32:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654886172] [2023-12-25 17:32:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:17,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:32:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688384840] [2023-12-25 17:32:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:17,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:32:17,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:32:17,088 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 17:32:17,090 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 17:32:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:18,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 7540 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 17:32:18,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:32:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:20,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:32:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 92 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:22,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:22,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654886172] [2023-12-25 17:32:22,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:32:22,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688384840] [2023-12-25 17:32:22,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688384840] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:32:22,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:32:22,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2023-12-25 17:32:22,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418635330] [2023-12-25 17:32:22,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:32:22,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 17:32:22,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:22,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 17:32:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-25 17:32:22,425 INFO L87 Difference]: Start difference. First operand 9471 states and 15712 transitions. Second operand has 22 states, 22 states have (on average 162.86363636363637) internal successors, (3583), 22 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:37,168 INFO L93 Difference]: Finished difference Result 68489 states and 113528 transitions. [2023-12-25 17:32:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 17:32:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 162.86363636363637) internal successors, (3583), 22 states have internal predecessors, (3583), 0 states have call successors, (0), 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 1841 [2023-12-25 17:32:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:37,230 INFO L225 Difference]: With dead ends: 68489 [2023-12-25 17:32:37,230 INFO L226 Difference]: Without dead ends: 59814 [2023-12-25 17:32:37,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3715 GetRequests, 3668 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=478, Invalid=1874, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 17:32:37,279 INFO L413 NwaCegarLoop]: 10854 mSDtfsCounter, 61669 mSDsluCounter, 126392 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61669 SdHoareTripleChecker+Valid, 137246 SdHoareTripleChecker+Invalid, 28707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:37,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61669 Valid, 137246 Invalid, 28707 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-25 17:32:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59814 states. [2023-12-25 17:32:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59814 to 16855. [2023-12-25 17:32:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16855 states, 16854 states have (on average 1.6593686958585498) internal successors, (27967), 16854 states have internal predecessors, (27967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16855 states to 16855 states and 27967 transitions. [2023-12-25 17:32:37,624 INFO L78 Accepts]: Start accepts. Automaton has 16855 states and 27967 transitions. Word has length 1841 [2023-12-25 17:32:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 16855 states and 27967 transitions. [2023-12-25 17:32:37,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 162.86363636363637) internal successors, (3583), 22 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16855 states and 27967 transitions. [2023-12-25 17:32:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1843 [2023-12-25 17:32:37,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:37,658 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:32:37,691 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 17:32:37,880 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 17:32:37,881 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:37,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:37,881 INFO L85 PathProgramCache]: Analyzing trace with hash -873891111, now seen corresponding path program 1 times [2023-12-25 17:32:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:37,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372116229] [2023-12-25 17:32:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:37,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:32:37,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077427543] [2023-12-25 17:32:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:32:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:32:37,973 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 17:32:37,974 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 17:32:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:39,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 7543 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-25 17:32:39,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:32:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 56 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:47,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:32:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 88 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:56,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372116229] [2023-12-25 17:32:56,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:32:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077427543] [2023-12-25 17:32:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077427543] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:32:56,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:32:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 39 [2023-12-25 17:32:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176333829] [2023-12-25 17:32:56,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:32:56,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-25 17:32:56,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:56,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-25 17:32:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 17:32:56,497 INFO L87 Difference]: Start difference. First operand 16855 states and 27967 transitions. Second operand has 39 states, 39 states have (on average 92.3076923076923) internal successors, (3600), 39 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:28,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-25 17:39:28,358 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-25 17:39:28,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4325 GetRequests, 3661 SyntacticMatches, 0 SemanticMatches, 664 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198393 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=62949, Invalid=379941, Unknown=0, NotChecked=0, Total=442890 [2023-12-25 17:39:28,383 INFO L413 NwaCegarLoop]: 83334 mSDtfsCounter, 282452 mSDsluCounter, 1815533 mSDsCounter, 0 mSdLazyCounter, 293417 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282452 SdHoareTripleChecker+Valid, 1898867 SdHoareTripleChecker+Invalid, 293492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.7s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 293417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 196.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:39:28,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282452 Valid, 1898867 Invalid, 293492 Unknown, 0 Unchecked, 4.7s Time], IncrementalHoareTripleChecker [74 Valid, 293417 Invalid, 0 Unknown, 0 Unchecked, 196.7s Time] [2023-12-25 17:39:28,409 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 17:39:28,584 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 17:39:28,584 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-25 17:39:28,589 INFO L158 Benchmark]: Toolchain (without parser) took 652657.30ms. Allocated memory was 316.7MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 264.0MB in the beginning and 392.5MB in the end (delta: -128.5MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-25 17:39:28,589 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 17:39:28,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 944.92ms. Allocated memory is still 316.7MB. Free memory was 264.0MB in the beginning and 159.7MB in the end (delta: 104.3MB). Peak memory consumption was 103.8MB. Max. memory is 8.0GB. [2023-12-25 17:39:28,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 967.44ms. Allocated memory was 316.7MB in the beginning and 618.7MB in the end (delta: 302.0MB). Free memory was 159.7MB in the beginning and 464.3MB in the end (delta: -304.6MB). Peak memory consumption was 186.1MB. Max. memory is 8.0GB. [2023-12-25 17:39:28,590 INFO L158 Benchmark]: Boogie Preprocessor took 1061.71ms. Allocated memory was 618.7MB in the beginning and 1.1GB in the end (delta: 508.6MB). Free memory was 464.3MB in the beginning and 923.1MB in the end (delta: -458.8MB). Peak memory consumption was 103.3MB. Max. memory is 8.0GB. [2023-12-25 17:39:28,590 INFO L158 Benchmark]: RCFGBuilder took 5911.97ms. Allocated memory was 1.1GB in the beginning and 2.0GB in the end (delta: 825.2MB). Free memory was 923.1MB in the beginning and 1.6GB in the end (delta: -682.6MB). Peak memory consumption was 215.5MB. Max. memory is 8.0GB. [2023-12-25 17:39:28,590 INFO L158 Benchmark]: TraceAbstraction took 643761.85ms. Allocated memory was 2.0GB in the beginning and 3.0GB in the end (delta: 1.1GB). Free memory was 1.6GB in the beginning and 392.5MB in the end (delta: 1.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-25 17:39:28,597 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 944.92ms. Allocated memory is still 316.7MB. Free memory was 264.0MB in the beginning and 159.7MB in the end (delta: 104.3MB). Peak memory consumption was 103.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 967.44ms. Allocated memory was 316.7MB in the beginning and 618.7MB in the end (delta: 302.0MB). Free memory was 159.7MB in the beginning and 464.3MB in the end (delta: -304.6MB). Peak memory consumption was 186.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 1061.71ms. Allocated memory was 618.7MB in the beginning and 1.1GB in the end (delta: 508.6MB). Free memory was 464.3MB in the beginning and 923.1MB in the end (delta: -458.8MB). Peak memory consumption was 103.3MB. Max. memory is 8.0GB. * RCFGBuilder took 5911.97ms. Allocated memory was 1.1GB in the beginning and 2.0GB in the end (delta: 825.2MB). Free memory was 923.1MB in the beginning and 1.6GB in the end (delta: -682.6MB). Peak memory consumption was 215.5MB. Max. memory is 8.0GB. * TraceAbstraction took 643761.85ms. Allocated memory was 2.0GB in the beginning and 3.0GB in the end (delta: 1.1GB). Free memory was 1.6GB in the beginning and 392.5MB in the end (delta: 1.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...