/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.loyd.2.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:36:54,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:36:54,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:36:54,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:36:54,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:36:54,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:36:54,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:36:54,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:36:54,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:36:54,136 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:36:54,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:36:54,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:36:54,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:36:54,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:36:54,139 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:36:54,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:36:54,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:36:54,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:36:54,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:36:54,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:36:54,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:36:54,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:36:54,140 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:36:54,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:36:54,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:36:54,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:36:54,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:36:54,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:36:54,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:36:54,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:36:54,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:36:54,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:36:54,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:36:54,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:36:54,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:36:54,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:36:54,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:36:54,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:36:54,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:36:54,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:36:54,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:36:54,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:36:54,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:36:54,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:36:54,404 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:36:54,404 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:36:54,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.loyd.2.prop1-func-interl.c [2023-12-16 19:36:55,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:36:55,806 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:36:55,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.loyd.2.prop1-func-interl.c [2023-12-16 19:36:55,824 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23be91d8/a63896ddfb6d4f99bb7994bf6918f6e7/FLAGb23ee7f00 [2023-12-16 19:36:55,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23be91d8/a63896ddfb6d4f99bb7994bf6918f6e7 [2023-12-16 19:36:55,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:36:55,838 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:36:55,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:36:55,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:36:55,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:36:55,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:36:55" (1/1) ... [2023-12-16 19:36:55,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7661f83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:55, skipping insertion in model container [2023-12-16 19:36:55,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:36:55" (1/1) ... [2023-12-16 19:36:55,911 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:36:56,105 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.loyd.2.prop1-func-interl.c[1171,1184] [2023-12-16 19:36:56,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:36:56,365 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:36:56,377 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.loyd.2.prop1-func-interl.c[1171,1184] [2023-12-16 19:36:56,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:36:56,581 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:36:56,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56 WrapperNode [2023-12-16 19:36:56,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:36:56,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:36:56,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:36:56,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:36:56,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:56,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:56,909 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3769 [2023-12-16 19:36:56,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:36:56,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:36:56,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:36:56,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:36:57,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,142 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]. [2023-12-16 19:36:57,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:36:57,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:36:57,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:36:57,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:36:57,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (1/1) ... [2023-12-16 19:36:57,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:36:57,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:36:57,457 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) [2023-12-16 19:36:57,479 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 [2023-12-16 19:36:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:36:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:36:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:36:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:36:57,780 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:36:57,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:37:00,025 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:37:00,094 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:37:00,094 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:37:00,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:37:00 BoogieIcfgContainer [2023-12-16 19:37:00,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:37:00,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:37:00,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:37:00,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:37:00,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:36:55" (1/3) ... [2023-12-16 19:37:00,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f8189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:37:00, skipping insertion in model container [2023-12-16 19:37:00,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:36:56" (2/3) ... [2023-12-16 19:37:00,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f8189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:37:00, skipping insertion in model container [2023-12-16 19:37:00,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:37:00" (3/3) ... [2023-12-16 19:37:00,102 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.loyd.2.prop1-func-interl.c [2023-12-16 19:37:00,117 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:37:00,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:37:00,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:37:00,173 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;@2374cf03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:37:00,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:37:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 744 states, 742 states have (on average 1.673854447439353) internal successors, (1242), 743 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 19:37:00,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:00,186 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] [2023-12-16 19:37:00,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:00,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2024513867, now seen corresponding path program 1 times [2023-12-16 19:37:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934218055] [2023-12-16 19:37:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934218055] [2023-12-16 19:37:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934218055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:00,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:00,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:37:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085308358] [2023-12-16 19:37:00,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:00,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:37:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:00,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:37:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:37:00,926 INFO L87 Difference]: Start difference. First operand has 744 states, 742 states have (on average 1.673854447439353) internal successors, (1242), 743 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:02,032 INFO L93 Difference]: Finished difference Result 2136 states and 3572 transitions. [2023-12-16 19:37:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:37:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-16 19:37:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:02,060 INFO L225 Difference]: With dead ends: 2136 [2023-12-16 19:37:02,060 INFO L226 Difference]: Without dead ends: 1438 [2023-12-16 19:37:02,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:37:02,068 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 3521 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:02,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3521 Valid, 2832 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 19:37:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2023-12-16 19:37:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 757. [2023-12-16 19:37:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 1.667989417989418) internal successors, (1261), 756 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1261 transitions. [2023-12-16 19:37:02,148 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1261 transitions. Word has length 48 [2023-12-16 19:37:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:02,148 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1261 transitions. [2023-12-16 19:37:02,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1261 transitions. [2023-12-16 19:37:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 19:37:02,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:02,150 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] [2023-12-16 19:37:02,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:37:02,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:02,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1196577979, now seen corresponding path program 1 times [2023-12-16 19:37:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:02,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406732882] [2023-12-16 19:37:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:02,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406732882] [2023-12-16 19:37:02,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406732882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:02,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:02,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:37:02,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120368900] [2023-12-16 19:37:02,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:02,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:37:02,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:02,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:37:02,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:37:02,433 INFO L87 Difference]: Start difference. First operand 757 states and 1261 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:02,475 INFO L93 Difference]: Finished difference Result 761 states and 1265 transitions. [2023-12-16 19:37:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:37:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-16 19:37:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:02,479 INFO L225 Difference]: With dead ends: 761 [2023-12-16 19:37:02,479 INFO L226 Difference]: Without dead ends: 759 [2023-12-16 19:37:02,480 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 [2023-12-16 19:37:02,481 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 1 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3700 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 [2023-12-16 19:37:02,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3700 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:37:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-12-16 19:37:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2023-12-16 19:37:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.66622691292876) internal successors, (1263), 758 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1263 transitions. [2023-12-16 19:37:02,508 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1263 transitions. Word has length 49 [2023-12-16 19:37:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:02,509 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1263 transitions. [2023-12-16 19:37:02,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1263 transitions. [2023-12-16 19:37:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 19:37:02,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:02,512 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] [2023-12-16 19:37:02,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:37:02,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:02,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1559003521, now seen corresponding path program 1 times [2023-12-16 19:37:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053372192] [2023-12-16 19:37:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:02,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053372192] [2023-12-16 19:37:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053372192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:37:02,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297238172] [2023-12-16 19:37:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:37:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:37:02,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:37:02,671 INFO L87 Difference]: Start difference. First operand 759 states and 1263 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:02,717 INFO L93 Difference]: Finished difference Result 1460 states and 2431 transitions. [2023-12-16 19:37:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:37:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-16 19:37:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:02,722 INFO L225 Difference]: With dead ends: 1460 [2023-12-16 19:37:02,722 INFO L226 Difference]: Without dead ends: 762 [2023-12-16 19:37:02,723 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 [2023-12-16 19:37:02,726 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 1 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3698 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 [2023-12-16 19:37:02,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3698 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:37:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-16 19:37:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 761. [2023-12-16 19:37:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.6644736842105263) internal successors, (1265), 760 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1265 transitions. [2023-12-16 19:37:02,744 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1265 transitions. Word has length 50 [2023-12-16 19:37:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:02,747 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1265 transitions. [2023-12-16 19:37:02,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1265 transitions. [2023-12-16 19:37:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 19:37:02,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:02,751 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] [2023-12-16 19:37:02,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:37:02,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:02,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1296688557, now seen corresponding path program 1 times [2023-12-16 19:37:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891477352] [2023-12-16 19:37:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:02,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891477352] [2023-12-16 19:37:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891477352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:37:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239399778] [2023-12-16 19:37:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:37:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:37:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:37:02,931 INFO L87 Difference]: Start difference. First operand 761 states and 1265 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:03,029 INFO L93 Difference]: Finished difference Result 2151 states and 3582 transitions. [2023-12-16 19:37:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:37:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-16 19:37:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:03,035 INFO L225 Difference]: With dead ends: 2151 [2023-12-16 19:37:03,035 INFO L226 Difference]: Without dead ends: 1451 [2023-12-16 19:37:03,038 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 [2023-12-16 19:37:03,041 INFO L413 NwaCegarLoop]: 1252 mSDtfsCounter, 4672 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:03,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3713 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:37:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-12-16 19:37:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 763. [2023-12-16 19:37:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.662729658792651) internal successors, (1267), 762 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1267 transitions. [2023-12-16 19:37:03,060 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1267 transitions. Word has length 51 [2023-12-16 19:37:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:03,060 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1267 transitions. [2023-12-16 19:37:03,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1267 transitions. [2023-12-16 19:37:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-16 19:37:03,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:03,076 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:03,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:37:03,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:03,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1651985698, now seen corresponding path program 1 times [2023-12-16 19:37:03,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:03,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207934045] [2023-12-16 19:37:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:03,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:03,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749829922] [2023-12-16 19:37:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:03,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:03,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:03,192 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) [2023-12-16 19:37:03,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:37:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:04,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 3337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 19:37:04,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:04,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207934045] [2023-12-16 19:37:04,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749829922] [2023-12-16 19:37:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749829922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:04,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:04,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:37:04,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041797324] [2023-12-16 19:37:04,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:37:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:37:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:37:04,460 INFO L87 Difference]: Start difference. First operand 763 states and 1267 transitions. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:04,896 INFO L93 Difference]: Finished difference Result 1495 states and 2483 transitions. [2023-12-16 19:37:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:37:04,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 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 504 [2023-12-16 19:37:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:04,900 INFO L225 Difference]: With dead ends: 1495 [2023-12-16 19:37:04,900 INFO L226 Difference]: Without dead ends: 795 [2023-12-16 19:37:04,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:04,902 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 2357 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:04,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2357 Valid, 1102 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 19:37:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-16 19:37:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 763. [2023-12-16 19:37:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.6614173228346456) internal successors, (1266), 762 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1266 transitions. [2023-12-16 19:37:04,919 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1266 transitions. Word has length 504 [2023-12-16 19:37:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:04,920 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1266 transitions. [2023-12-16 19:37:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1266 transitions. [2023-12-16 19:37:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-16 19:37:04,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:04,958 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:04,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:05,185 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 [2023-12-16 19:37:05,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:05,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -99646894, now seen corresponding path program 1 times [2023-12-16 19:37:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:05,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722219062] [2023-12-16 19:37:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:05,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:05,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981768439] [2023-12-16 19:37:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:05,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:05,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:05,275 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) [2023-12-16 19:37:05,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:37:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:06,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 3338 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 19:37:06,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:06,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:06,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722219062] [2023-12-16 19:37:06,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:06,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981768439] [2023-12-16 19:37:06,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981768439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:06,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:37:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572015085] [2023-12-16 19:37:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:37:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:37:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:37:06,397 INFO L87 Difference]: Start difference. First operand 763 states and 1266 transitions. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:06,458 INFO L93 Difference]: Finished difference Result 1626 states and 2701 transitions. [2023-12-16 19:37:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:37:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 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 505 [2023-12-16 19:37:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:06,463 INFO L225 Difference]: With dead ends: 1626 [2023-12-16 19:37:06,463 INFO L226 Difference]: Without dead ends: 926 [2023-12-16 19:37:06,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:06,465 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 2402 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:06,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 2026 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:37:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-12-16 19:37:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 763. [2023-12-16 19:37:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.6601049868766404) internal successors, (1265), 762 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1265 transitions. [2023-12-16 19:37:06,479 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1265 transitions. Word has length 505 [2023-12-16 19:37:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:06,480 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1265 transitions. [2023-12-16 19:37:06,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1265 transitions. [2023-12-16 19:37:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-16 19:37:06,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:06,488 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:06,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:06,701 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 [2023-12-16 19:37:06,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:06,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1199545504, now seen corresponding path program 1 times [2023-12-16 19:37:06,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:06,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526221777] [2023-12-16 19:37:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:06,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:06,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508917749] [2023-12-16 19:37:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:06,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:06,793 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) [2023-12-16 19:37:06,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:37:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:07,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 3339 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 19:37:07,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:09,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526221777] [2023-12-16 19:37:09,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508917749] [2023-12-16 19:37:09,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508917749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:09,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:09,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:37:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318537095] [2023-12-16 19:37:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:09,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:37:09,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:37:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:37:09,571 INFO L87 Difference]: Start difference. First operand 763 states and 1265 transitions. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:10,546 INFO L93 Difference]: Finished difference Result 2148 states and 3568 transitions. [2023-12-16 19:37:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:37:10,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 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 506 [2023-12-16 19:37:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:10,553 INFO L225 Difference]: With dead ends: 2148 [2023-12-16 19:37:10,553 INFO L226 Difference]: Without dead ends: 1448 [2023-12-16 19:37:10,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:37:10,555 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 703 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:10,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 3852 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 19:37:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-12-16 19:37:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1438. [2023-12-16 19:37:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 1.6624913013221991) internal successors, (2389), 1437 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2389 transitions. [2023-12-16 19:37:10,589 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2389 transitions. Word has length 506 [2023-12-16 19:37:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:10,590 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2389 transitions. [2023-12-16 19:37:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2389 transitions. [2023-12-16 19:37:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-16 19:37:10,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:10,599 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:10,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:10,822 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 [2023-12-16 19:37:10,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:10,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -462632328, now seen corresponding path program 1 times [2023-12-16 19:37:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:10,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703475555] [2023-12-16 19:37:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:10,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222468629] [2023-12-16 19:37:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:10,933 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) [2023-12-16 19:37:10,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:37:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:11,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 3342 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 19:37:11,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:11,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:37:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 19:37:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:11,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703475555] [2023-12-16 19:37:11,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:11,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222468629] [2023-12-16 19:37:11,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222468629] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:37:11,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:37:11,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 19:37:11,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929007138] [2023-12-16 19:37:11,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:11,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:37:11,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:37:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:37:11,990 INFO L87 Difference]: Start difference. First operand 1438 states and 2389 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:12,102 INFO L93 Difference]: Finished difference Result 3521 states and 5853 transitions. [2023-12-16 19:37:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:37:12,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 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 507 [2023-12-16 19:37:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:12,116 INFO L225 Difference]: With dead ends: 3521 [2023-12-16 19:37:12,117 INFO L226 Difference]: Without dead ends: 2146 [2023-12-16 19:37:12,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 1002 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:37:12,121 INFO L413 NwaCegarLoop]: 3530 mSDtfsCounter, 2295 mSDsluCounter, 8268 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 11798 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:12,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 11798 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:37:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2023-12-16 19:37:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1432. [2023-12-16 19:37:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.6617749825296995) internal successors, (2378), 1431 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2378 transitions. [2023-12-16 19:37:12,155 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2378 transitions. Word has length 507 [2023-12-16 19:37:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:12,156 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2378 transitions. [2023-12-16 19:37:12,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2378 transitions. [2023-12-16 19:37:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-16 19:37:12,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:12,160 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:12,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:12,376 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 [2023-12-16 19:37:12,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:12,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:12,377 INFO L85 PathProgramCache]: Analyzing trace with hash 141419296, now seen corresponding path program 1 times [2023-12-16 19:37:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:12,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123315787] [2023-12-16 19:37:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:12,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:12,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926267344] [2023-12-16 19:37:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:12,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:12,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:12,451 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) [2023-12-16 19:37:12,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 19:37:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:13,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 19:37:13,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:15,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123315787] [2023-12-16 19:37:15,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926267344] [2023-12-16 19:37:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926267344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:37:15,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198294402] [2023-12-16 19:37:15,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:15,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:37:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:37:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:37:15,051 INFO L87 Difference]: Start difference. First operand 1432 states and 2378 transitions. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:16,090 INFO L93 Difference]: Finished difference Result 3484 states and 5790 transitions. [2023-12-16 19:37:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:37:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 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 508 [2023-12-16 19:37:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:16,098 INFO L225 Difference]: With dead ends: 3484 [2023-12-16 19:37:16,099 INFO L226 Difference]: Without dead ends: 2115 [2023-12-16 19:37:16,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:37:16,101 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 4262 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:16,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4262 Valid, 3916 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 19:37:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-12-16 19:37:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1916. [2023-12-16 19:37:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 1.66266318537859) internal successors, (3184), 1915 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 3184 transitions. [2023-12-16 19:37:16,139 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 3184 transitions. Word has length 508 [2023-12-16 19:37:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:16,140 INFO L495 AbstractCegarLoop]: Abstraction has 1916 states and 3184 transitions. [2023-12-16 19:37:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 3184 transitions. [2023-12-16 19:37:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-16 19:37:16,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:16,144 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:16,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:16,360 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 [2023-12-16 19:37:16,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:16,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1594766506, now seen corresponding path program 1 times [2023-12-16 19:37:16,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:16,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046667070] [2023-12-16 19:37:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:16,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688575240] [2023-12-16 19:37:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:16,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:16,427 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) [2023-12-16 19:37:16,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 19:37:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:17,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 3348 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 19:37:17,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:17,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:17,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046667070] [2023-12-16 19:37:17,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688575240] [2023-12-16 19:37:17,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688575240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:17,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:17,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:37:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904549835] [2023-12-16 19:37:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:17,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:37:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:37:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:17,742 INFO L87 Difference]: Start difference. First operand 1916 states and 3184 transitions. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:18,645 INFO L93 Difference]: Finished difference Result 3699 states and 6147 transitions. [2023-12-16 19:37:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:37:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-16 19:37:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:18,653 INFO L225 Difference]: With dead ends: 3699 [2023-12-16 19:37:18,654 INFO L226 Difference]: Without dead ends: 2316 [2023-12-16 19:37:18,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:18,656 INFO L413 NwaCegarLoop]: 1182 mSDtfsCounter, 1259 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:18,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 4458 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 19:37:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2023-12-16 19:37:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1944. [2023-12-16 19:37:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 1.660833762223366) internal successors, (3227), 1943 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 3227 transitions. [2023-12-16 19:37:18,699 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 3227 transitions. Word has length 509 [2023-12-16 19:37:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:18,700 INFO L495 AbstractCegarLoop]: Abstraction has 1944 states and 3227 transitions. [2023-12-16 19:37:18,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 3227 transitions. [2023-12-16 19:37:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-16 19:37:18,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:18,705 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:18,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:18,924 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 [2023-12-16 19:37:18,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:18,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash -289624802, now seen corresponding path program 1 times [2023-12-16 19:37:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959355570] [2023-12-16 19:37:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:18,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:18,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856923994] [2023-12-16 19:37:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:18,986 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) [2023-12-16 19:37:19,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 19:37:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:19,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 3351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:37:19,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:20,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:20,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:20,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959355570] [2023-12-16 19:37:20,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:20,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856923994] [2023-12-16 19:37:20,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856923994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:20,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:20,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:37:20,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810573849] [2023-12-16 19:37:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:20,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:37:20,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:20,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:37:20,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:20,259 INFO L87 Difference]: Start difference. First operand 1944 states and 3227 transitions. Second operand has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:21,365 INFO L93 Difference]: Finished difference Result 3757 states and 6238 transitions. [2023-12-16 19:37:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:37:21,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 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 510 [2023-12-16 19:37:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:21,376 INFO L225 Difference]: With dead ends: 3757 [2023-12-16 19:37:21,376 INFO L226 Difference]: Without dead ends: 2360 [2023-12-16 19:37:21,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:37:21,380 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 1272 mSDsluCounter, 4633 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 5797 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:21,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 5797 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 19:37:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2023-12-16 19:37:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2010. [2023-12-16 19:37:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 1.6570433051269289) internal successors, (3329), 2009 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3329 transitions. [2023-12-16 19:37:21,412 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3329 transitions. Word has length 510 [2023-12-16 19:37:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:21,413 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 3329 transitions. [2023-12-16 19:37:21,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3329 transitions. [2023-12-16 19:37:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-16 19:37:21,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:21,417 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:21,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:21,631 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 [2023-12-16 19:37:21,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:21,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1075622692, now seen corresponding path program 1 times [2023-12-16 19:37:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193584677] [2023-12-16 19:37:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:21,695 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340183791] [2023-12-16 19:37:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:21,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:21,705 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) [2023-12-16 19:37:21,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 19:37:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:22,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 19:37:22,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:23,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:23,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:23,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193584677] [2023-12-16 19:37:23,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:23,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340183791] [2023-12-16 19:37:23,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340183791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:23,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:37:23,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370330534] [2023-12-16 19:37:23,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:23,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:37:23,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:37:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:23,049 INFO L87 Difference]: Start difference. First operand 2010 states and 3329 transitions. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:23,868 INFO L93 Difference]: Finished difference Result 3845 states and 6370 transitions. [2023-12-16 19:37:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:37:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 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 510 [2023-12-16 19:37:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:23,878 INFO L225 Difference]: With dead ends: 3845 [2023-12-16 19:37:23,878 INFO L226 Difference]: Without dead ends: 2382 [2023-12-16 19:37:23,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:23,881 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1525 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:23,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 3750 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 19:37:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2023-12-16 19:37:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2044. [2023-12-16 19:37:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 1.6558981889378366) internal successors, (3383), 2043 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3383 transitions. [2023-12-16 19:37:23,912 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3383 transitions. Word has length 510 [2023-12-16 19:37:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:23,912 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 3383 transitions. [2023-12-16 19:37:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3383 transitions. [2023-12-16 19:37:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-16 19:37:23,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:23,916 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:23,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-16 19:37:24,133 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 [2023-12-16 19:37:24,133 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:24,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1681242448, now seen corresponding path program 1 times [2023-12-16 19:37:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:24,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185205118] [2023-12-16 19:37:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:24,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779383582] [2023-12-16 19:37:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:24,182 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) [2023-12-16 19:37:24,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 19:37:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:24,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 3354 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:37:24,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:25,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:25,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185205118] [2023-12-16 19:37:25,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779383582] [2023-12-16 19:37:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779383582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:25,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:25,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:37:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764817608] [2023-12-16 19:37:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:37:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:37:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:25,531 INFO L87 Difference]: Start difference. First operand 2044 states and 3383 transitions. Second operand has 8 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:26,659 INFO L93 Difference]: Finished difference Result 3877 states and 6418 transitions. [2023-12-16 19:37:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:37:26,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 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 511 [2023-12-16 19:37:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:26,667 INFO L225 Difference]: With dead ends: 3877 [2023-12-16 19:37:26,667 INFO L226 Difference]: Without dead ends: 2380 [2023-12-16 19:37:26,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:37:26,670 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 1274 mSDsluCounter, 5472 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 6618 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:26,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 6618 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 19:37:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-12-16 19:37:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2080. [2023-12-16 19:37:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2079 states have (on average 1.6541606541606542) internal successors, (3439), 2079 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3439 transitions. [2023-12-16 19:37:26,701 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3439 transitions. Word has length 511 [2023-12-16 19:37:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:26,702 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 3439 transitions. [2023-12-16 19:37:26,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3439 transitions. [2023-12-16 19:37:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-16 19:37:26,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:26,706 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:26,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:26,920 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 [2023-12-16 19:37:26,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:26,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:26,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1209855662, now seen corresponding path program 1 times [2023-12-16 19:37:26,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:26,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825792001] [2023-12-16 19:37:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:26,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167030076] [2023-12-16 19:37:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:26,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:26,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:26,989 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) [2023-12-16 19:37:26,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 19:37:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:27,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 3355 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 19:37:27,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:28,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:28,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825792001] [2023-12-16 19:37:28,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167030076] [2023-12-16 19:37:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167030076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:28,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:37:28,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222363297] [2023-12-16 19:37:28,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:28,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:37:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:28,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:37:28,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:28,286 INFO L87 Difference]: Start difference. First operand 2080 states and 3439 transitions. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:28,993 INFO L93 Difference]: Finished difference Result 3951 states and 6534 transitions. [2023-12-16 19:37:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:37:28,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 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 511 [2023-12-16 19:37:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:29,002 INFO L225 Difference]: With dead ends: 3951 [2023-12-16 19:37:29,002 INFO L226 Difference]: Without dead ends: 2418 [2023-12-16 19:37:29,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:29,005 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1495 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:29,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 3750 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:37:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2023-12-16 19:37:29,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2116. [2023-12-16 19:37:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 1.6534278959810875) internal successors, (3497), 2115 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3497 transitions. [2023-12-16 19:37:29,035 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3497 transitions. Word has length 511 [2023-12-16 19:37:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:29,036 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 3497 transitions. [2023-12-16 19:37:29,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3497 transitions. [2023-12-16 19:37:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-16 19:37:29,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:29,040 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:29,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:29,254 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 [2023-12-16 19:37:29,255 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:29,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 110065730, now seen corresponding path program 1 times [2023-12-16 19:37:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141500321] [2023-12-16 19:37:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:29,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:29,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426520590] [2023-12-16 19:37:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:29,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:29,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:29,305 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) [2023-12-16 19:37:29,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 19:37:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:30,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 3357 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:37:30,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:30,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:30,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:30,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141500321] [2023-12-16 19:37:30,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:30,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426520590] [2023-12-16 19:37:30,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426520590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:30,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:30,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:37:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848170579] [2023-12-16 19:37:30,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:30,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:37:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:37:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:30,792 INFO L87 Difference]: Start difference. First operand 2116 states and 3497 transitions. Second operand has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:31,618 INFO L93 Difference]: Finished difference Result 3985 states and 6586 transitions. [2023-12-16 19:37:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:37:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 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 512 [2023-12-16 19:37:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:31,624 INFO L225 Difference]: With dead ends: 3985 [2023-12-16 19:37:31,625 INFO L226 Difference]: Without dead ends: 2416 [2023-12-16 19:37:31,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:37:31,627 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 1306 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:31,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 4154 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 19:37:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2023-12-16 19:37:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2326. [2023-12-16 19:37:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2325 states have (on average 1.6529032258064515) internal successors, (3843), 2325 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3843 transitions. [2023-12-16 19:37:31,662 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3843 transitions. Word has length 512 [2023-12-16 19:37:31,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:31,662 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 3843 transitions. [2023-12-16 19:37:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3843 transitions. [2023-12-16 19:37:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-16 19:37:31,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:31,667 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:31,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-16 19:37:31,887 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 [2023-12-16 19:37:31,888 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:31,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash 680337536, now seen corresponding path program 1 times [2023-12-16 19:37:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412857594] [2023-12-16 19:37:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:31,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375727207] [2023-12-16 19:37:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:31,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:31,944 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) [2023-12-16 19:37:31,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 19:37:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:32,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 19:37:32,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:33,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:33,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:33,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412857594] [2023-12-16 19:37:33,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:33,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375727207] [2023-12-16 19:37:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375727207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:33,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:37:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095361092] [2023-12-16 19:37:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:33,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:37:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:37:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:33,392 INFO L87 Difference]: Start difference. First operand 2326 states and 3843 transitions. Second operand has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:34,102 INFO L93 Difference]: Finished difference Result 4407 states and 7282 transitions. [2023-12-16 19:37:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:37:34,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 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 512 [2023-12-16 19:37:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:34,107 INFO L225 Difference]: With dead ends: 4407 [2023-12-16 19:37:34,107 INFO L226 Difference]: Without dead ends: 2628 [2023-12-16 19:37:34,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:34,110 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1356 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:34,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 3750 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:37:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2023-12-16 19:37:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2536. [2023-12-16 19:37:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2535 states have (on average 1.6532544378698224) internal successors, (4191), 2535 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4191 transitions. [2023-12-16 19:37:34,151 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4191 transitions. Word has length 512 [2023-12-16 19:37:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:34,152 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 4191 transitions. [2023-12-16 19:37:34,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4191 transitions. [2023-12-16 19:37:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-16 19:37:34,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:34,157 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:34,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:34,372 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 [2023-12-16 19:37:34,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:34,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash -790494462, now seen corresponding path program 1 times [2023-12-16 19:37:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576601904] [2023-12-16 19:37:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:34,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:34,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471197408] [2023-12-16 19:37:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:34,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:34,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:34,418 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) [2023-12-16 19:37:34,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 19:37:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:35,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:37:35,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:35,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:35,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576601904] [2023-12-16 19:37:35,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:35,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471197408] [2023-12-16 19:37:35,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471197408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:35,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:35,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:37:35,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637593214] [2023-12-16 19:37:35,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:35,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:37:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:35,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:37:35,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:35,920 INFO L87 Difference]: Start difference. First operand 2536 states and 4191 transitions. Second operand has 8 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:36,891 INFO L93 Difference]: Finished difference Result 4615 states and 7624 transitions. [2023-12-16 19:37:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:37:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 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 513 [2023-12-16 19:37:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:36,897 INFO L225 Difference]: With dead ends: 4615 [2023-12-16 19:37:36,897 INFO L226 Difference]: Without dead ends: 2626 [2023-12-16 19:37:36,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:37:36,900 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 1139 mSDsluCounter, 4060 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 5031 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:36,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 5031 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 19:37:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2023-12-16 19:37:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2584. [2023-12-16 19:37:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2583 states have (on average 1.6519550909794811) internal successors, (4267), 2583 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4267 transitions. [2023-12-16 19:37:36,927 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4267 transitions. Word has length 513 [2023-12-16 19:37:36,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:36,928 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 4267 transitions. [2023-12-16 19:37:36,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4267 transitions. [2023-12-16 19:37:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-16 19:37:36,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:36,932 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:36,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:37,148 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 [2023-12-16 19:37:37,148 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:37,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -291937660, now seen corresponding path program 1 times [2023-12-16 19:37:37,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:37,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767847205] [2023-12-16 19:37:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:37,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374919813] [2023-12-16 19:37:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:37,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:37,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:37,193 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) [2023-12-16 19:37:37,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 19:37:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:37,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 19:37:37,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:38,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:38,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:38,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767847205] [2023-12-16 19:37:38,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:38,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374919813] [2023-12-16 19:37:38,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374919813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:38,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:38,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:37:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286384626] [2023-12-16 19:37:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:38,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:37:38,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:38,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:37:38,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:37:38,708 INFO L87 Difference]: Start difference. First operand 2584 states and 4267 transitions. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:39,396 INFO L93 Difference]: Finished difference Result 4713 states and 7780 transitions. [2023-12-16 19:37:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:37:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 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 513 [2023-12-16 19:37:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:39,401 INFO L225 Difference]: With dead ends: 4713 [2023-12-16 19:37:39,401 INFO L226 Difference]: Without dead ends: 2676 [2023-12-16 19:37:39,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:37:39,403 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1320 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:39,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 3750 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 19:37:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2023-12-16 19:37:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2632. [2023-12-16 19:37:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2632 states, 2631 states have (on average 1.6514633219308248) internal successors, (4345), 2631 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 4345 transitions. [2023-12-16 19:37:39,431 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 4345 transitions. Word has length 513 [2023-12-16 19:37:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:39,431 INFO L495 AbstractCegarLoop]: Abstraction has 2632 states and 4345 transitions. [2023-12-16 19:37:39,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 4345 transitions. [2023-12-16 19:37:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 19:37:39,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:39,435 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:39,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:39,648 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 [2023-12-16 19:37:39,648 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:39,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1587542386, now seen corresponding path program 1 times [2023-12-16 19:37:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395389647] [2023-12-16 19:37:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:39,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:39,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473229712] [2023-12-16 19:37:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:39,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:39,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:39,698 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) [2023-12-16 19:37:39,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 19:37:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:40,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 19:37:40,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:42,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:42,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395389647] [2023-12-16 19:37:42,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473229712] [2023-12-16 19:37:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473229712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:42,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 19:37:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635180450] [2023-12-16 19:37:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 19:37:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 19:37:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:37:42,151 INFO L87 Difference]: Start difference. First operand 2632 states and 4345 transitions. Second operand has 11 states, 11 states have (on average 46.72727272727273) internal successors, (514), 10 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:43,415 INFO L93 Difference]: Finished difference Result 5121 states and 8438 transitions. [2023-12-16 19:37:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:37:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 46.72727272727273) internal successors, (514), 10 states have internal predecessors, (514), 0 states have call successors, (0), 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 514 [2023-12-16 19:37:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:43,419 INFO L225 Difference]: With dead ends: 5121 [2023-12-16 19:37:43,419 INFO L226 Difference]: Without dead ends: 3036 [2023-12-16 19:37:43,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:37:43,423 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 5519 mSDsluCounter, 5060 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5519 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:43,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5519 Valid, 6060 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 19:37:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2023-12-16 19:37:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2782. [2023-12-16 19:37:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2781 states have (on average 1.6494066882416396) internal successors, (4587), 2781 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 4587 transitions. [2023-12-16 19:37:43,464 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 4587 transitions. Word has length 514 [2023-12-16 19:37:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:43,465 INFO L495 AbstractCegarLoop]: Abstraction has 2782 states and 4587 transitions. [2023-12-16 19:37:43,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.72727272727273) internal successors, (514), 10 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 4587 transitions. [2023-12-16 19:37:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 19:37:43,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:43,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:43,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:43,680 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 [2023-12-16 19:37:43,680 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:43,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -137065936, now seen corresponding path program 1 times [2023-12-16 19:37:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048171028] [2023-12-16 19:37:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:43,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405155494] [2023-12-16 19:37:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:43,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:43,724 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) [2023-12-16 19:37:43,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 19:37:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:44,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 19:37:44,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:46,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048171028] [2023-12-16 19:37:46,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405155494] [2023-12-16 19:37:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405155494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:46,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:37:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789363765] [2023-12-16 19:37:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:37:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:37:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:37:46,068 INFO L87 Difference]: Start difference. First operand 2782 states and 4587 transitions. Second operand has 9 states, 9 states have (on average 57.111111111111114) internal successors, (514), 8 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:47,173 INFO L93 Difference]: Finished difference Result 5096 states and 8396 transitions. [2023-12-16 19:37:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:37:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 57.111111111111114) internal successors, (514), 8 states have internal predecessors, (514), 0 states have call successors, (0), 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 514 [2023-12-16 19:37:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:47,179 INFO L225 Difference]: With dead ends: 5096 [2023-12-16 19:37:47,179 INFO L226 Difference]: Without dead ends: 3011 [2023-12-16 19:37:47,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:37:47,182 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 3430 mSDsluCounter, 4710 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3430 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:47,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3430 Valid, 5651 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 19:37:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2023-12-16 19:37:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2917. [2023-12-16 19:37:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2916 states have (on average 1.6491769547325104) internal successors, (4809), 2916 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4809 transitions. [2023-12-16 19:37:47,215 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4809 transitions. Word has length 514 [2023-12-16 19:37:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:47,215 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 4809 transitions. [2023-12-16 19:37:47,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.111111111111114) internal successors, (514), 8 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:47,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4809 transitions. [2023-12-16 19:37:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-16 19:37:47,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:47,220 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:47,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:47,432 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 [2023-12-16 19:37:47,432 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:47,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -131335194, now seen corresponding path program 1 times [2023-12-16 19:37:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926157490] [2023-12-16 19:37:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:47,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:47,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193414804] [2023-12-16 19:37:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:47,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:47,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:47,476 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) [2023-12-16 19:37:47,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 19:37:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:48,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 3366 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 19:37:48,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:37:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:37:48,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:37:48,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:37:48,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926157490] [2023-12-16 19:37:48,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:37:48,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193414804] [2023-12-16 19:37:48,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193414804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:37:48,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:37:48,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:37:48,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240034630] [2023-12-16 19:37:48,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:37:48,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:37:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:37:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:37:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:37:48,722 INFO L87 Difference]: Start difference. First operand 2917 states and 4809 transitions. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:37:50,215 INFO L93 Difference]: Finished difference Result 8671 states and 14274 transitions. [2023-12-16 19:37:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 19:37:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 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 515 [2023-12-16 19:37:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:37:50,224 INFO L225 Difference]: With dead ends: 8671 [2023-12-16 19:37:50,224 INFO L226 Difference]: Without dead ends: 6361 [2023-12-16 19:37:50,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:37:50,229 INFO L413 NwaCegarLoop]: 1949 mSDtfsCounter, 2311 mSDsluCounter, 6673 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 8622 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:37:50,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 8622 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 19:37:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2023-12-16 19:37:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 3253. [2023-12-16 19:37:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3252 states have (on average 1.647908979089791) internal successors, (5359), 3252 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5359 transitions. [2023-12-16 19:37:50,280 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5359 transitions. Word has length 515 [2023-12-16 19:37:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:37:50,281 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 5359 transitions. [2023-12-16 19:37:50,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:37:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5359 transitions. [2023-12-16 19:37:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-16 19:37:50,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:37:50,285 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:37:50,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 19:37:50,498 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 [2023-12-16 19:37:50,499 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:37:50,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:37:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash 557203780, now seen corresponding path program 1 times [2023-12-16 19:37:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:37:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424383158] [2023-12-16 19:37:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:37:50,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:37:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224662014] [2023-12-16 19:37:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:37:50,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:37:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:37:50,559 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) [2023-12-16 19:37:50,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 19:37:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:37:51,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:37:51,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 19:37:51,426 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:37:51,445 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:37:51,556 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:37:51,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-16 19:37:51,756 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 [2023-12-16 19:37:51,757 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 517 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 19:37:51,761 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:37:51,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:37:51,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:37:51 BoogieIcfgContainer [2023-12-16 19:37:51,765 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:37:51,765 INFO L158 Benchmark]: Toolchain (without parser) took 55927.72ms. Allocated memory was 361.8MB in the beginning and 1.2GB in the end (delta: 836.8MB). Free memory was 310.0MB in the beginning and 617.4MB in the end (delta: -307.4MB). Peak memory consumption was 530.4MB. Max. memory is 8.0GB. [2023-12-16 19:37:51,766 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 208.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:37:51,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 742.76ms. Allocated memory is still 361.8MB. Free memory was 309.8MB in the beginning and 303.3MB in the end (delta: 6.4MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. [2023-12-16 19:37:51,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 327.97ms. Allocated memory is still 361.8MB. Free memory was 303.3MB in the beginning and 222.6MB in the end (delta: 80.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-16 19:37:51,766 INFO L158 Benchmark]: Boogie Preprocessor took 510.58ms. Allocated memory is still 361.8MB. Free memory was 222.6MB in the beginning and 253.1MB in the end (delta: -30.5MB). Peak memory consumption was 66.6MB. Max. memory is 8.0GB. [2023-12-16 19:37:51,767 INFO L158 Benchmark]: RCFGBuilder took 2672.31ms. Allocated memory was 361.8MB in the beginning and 691.0MB in the end (delta: 329.3MB). Free memory was 253.1MB in the beginning and 466.1MB in the end (delta: -213.1MB). Peak memory consumption was 118.5MB. Max. memory is 8.0GB. [2023-12-16 19:37:51,767 INFO L158 Benchmark]: TraceAbstraction took 51668.25ms. Allocated memory was 691.0MB in the beginning and 1.2GB in the end (delta: 507.5MB). Free memory was 465.6MB in the beginning and 617.4MB in the end (delta: -151.8MB). Peak memory consumption was 355.7MB. Max. memory is 8.0GB. [2023-12-16 19:37:51,768 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 208.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 742.76ms. Allocated memory is still 361.8MB. Free memory was 309.8MB in the beginning and 303.3MB in the end (delta: 6.4MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 327.97ms. Allocated memory is still 361.8MB. Free memory was 303.3MB in the beginning and 222.6MB in the end (delta: 80.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 510.58ms. Allocated memory is still 361.8MB. Free memory was 222.6MB in the beginning and 253.1MB in the end (delta: -30.5MB). Peak memory consumption was 66.6MB. Max. memory is 8.0GB. * RCFGBuilder took 2672.31ms. Allocated memory was 361.8MB in the beginning and 691.0MB in the end (delta: 329.3MB). Free memory was 253.1MB in the beginning and 466.1MB in the end (delta: -213.1MB). Peak memory consumption was 118.5MB. Max. memory is 8.0GB. * TraceAbstraction took 51668.25ms. Allocated memory was 691.0MB in the beginning and 1.2GB in the end (delta: 507.5MB). Free memory was 465.6MB in the beginning and 617.4MB in the end (delta: -151.8MB). Peak memory consumption was 355.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 517 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 744 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.6s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43420 SdHoareTripleChecker+Valid, 14.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43420 mSDsluCounter, 98028 SdHoareTripleChecker+Invalid, 11.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72279 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22914 IncrementalHoareTripleChecker+Invalid, 22958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 25749 mSDtfsCounter, 22914 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9230 GetRequests, 9084 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3253occurred in iteration=21, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 7874 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.7s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 8872 NumberOfCodeBlocks, 8872 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9357 ConstructedInterpolants, 0 QuantifiedInterpolants, 59174 SizeOfPredicates, 77 NumberOfNonLiveVariables, 56990 ConjunctsInSsa, 253 ConjunctsInUnsatCore, 22 InterpolantComputations, 21 PerfectInterpolantSequences, 289/301 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown