/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-tiling/poly1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 07:49:45,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 07:49:45,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 07:49:45,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 07:49:45,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 07:49:45,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 07:49:45,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 07:49:45,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 07:49:45,271 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 07:49:45,274 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 07:49:45,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 07:49:45,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 07:49:45,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 07:49:45,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 07:49:45,276 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 07:49:45,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 07:49:45,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 07:49:45,277 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 07:49:45,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 07:49:45,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 07:49:45,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 07:49:45,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 07:49:45,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 07:49:45,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 07:49:45,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 07:49:45,278 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 07:49:45,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 07:49:45,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 07:49:45,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 07:49:45,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 07:49:45,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 07:49:45,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 07:49:45,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 07:49:45,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 07:49:45,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 07:49:45,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 07:49:45,281 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 07:49:45,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 07:49:45,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 07:49:45,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 07:49:45,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 07:49:45,508 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 07:49:45,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/poly1.c [2023-12-20 07:49:46,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 07:49:46,690 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 07:49:46,691 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/poly1.c [2023-12-20 07:49:46,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a8a8a571/7cb3781c6c984f30adfca91faff17376/FLAG1e189f103 [2023-12-20 07:49:46,710 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a8a8a571/7cb3781c6c984f30adfca91faff17376 [2023-12-20 07:49:46,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 07:49:46,713 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 07:49:46,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 07:49:46,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 07:49:46,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 07:49:46,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f366dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46, skipping insertion in model container [2023-12-20 07:49:46,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,734 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 07:49:46,827 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/poly1.c[396,409] [2023-12-20 07:49:46,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 07:49:46,846 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 07:49:46,854 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/poly1.c[396,409] [2023-12-20 07:49:46,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 07:49:46,867 INFO L206 MainTranslator]: Completed translation [2023-12-20 07:49:46,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46 WrapperNode [2023-12-20 07:49:46,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 07:49:46,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 07:49:46,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 07:49:46,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 07:49:46,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,894 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-12-20 07:49:46,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 07:49:46,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 07:49:46,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 07:49:46,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 07:49:46,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,930 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 8, 2]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-12-20 07:49:46,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 07:49:46,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 07:49:46,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 07:49:46,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 07:49:46,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (1/1) ... [2023-12-20 07:49:46,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 07:49:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:46,978 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) [2023-12-20 07:49:46,998 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 [2023-12-20 07:49:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 07:49:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 07:49:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 07:49:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 07:49:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 07:49:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 07:49:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 07:49:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-20 07:49:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 07:49:47,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 07:49:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 07:49:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 07:49:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 07:49:47,089 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 07:49:47,092 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 07:49:47,202 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 07:49:47,220 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 07:49:47,221 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 07:49:47,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:49:47 BoogieIcfgContainer [2023-12-20 07:49:47,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 07:49:47,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 07:49:47,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 07:49:47,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 07:49:47,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:49:46" (1/3) ... [2023-12-20 07:49:47,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c8700c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:49:47, skipping insertion in model container [2023-12-20 07:49:47,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:46" (2/3) ... [2023-12-20 07:49:47,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c8700c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:49:47, skipping insertion in model container [2023-12-20 07:49:47,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:49:47" (3/3) ... [2023-12-20 07:49:47,227 INFO L112 eAbstractionObserver]: Analyzing ICFG poly1.c [2023-12-20 07:49:47,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 07:49:47,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 07:49:47,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 07:49:47,273 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;@4458affe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 07:49:47,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 07:49:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-20 07:49:47,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:47,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:47,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash 807800041, now seen corresponding path program 1 times [2023-12-20 07:49:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:47,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331956330] [2023-12-20 07:49:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:49:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331956330] [2023-12-20 07:49:47,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:49:47,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861821028] [2023-12-20 07:49:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:47,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:47,405 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) [2023-12-20 07:49:47,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 07:49:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:49:47,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 07:49:47,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:47,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:49:47,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861821028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:49:47,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:49:47,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 07:49:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139464873] [2023-12-20 07:49:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:49:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 07:49:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 07:49:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 07:49:47,507 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:47,523 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2023-12-20 07:49:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 07:49:47,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-20 07:49:47,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:47,530 INFO L225 Difference]: With dead ends: 21 [2023-12-20 07:49:47,530 INFO L226 Difference]: Without dead ends: 9 [2023-12-20 07:49:47,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 07:49:47,536 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:47,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:49:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-20 07:49:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-20 07:49:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-12-20 07:49:47,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2023-12-20 07:49:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:47,558 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-12-20 07:49:47,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-12-20 07:49:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-20 07:49:47,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:47,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:47,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 07:49:47,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 07:49:47,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:47,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash 802258915, now seen corresponding path program 1 times [2023-12-20 07:49:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306907987] [2023-12-20 07:49:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:49:47,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:47,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306907987] [2023-12-20 07:49:47,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:49:47,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943659233] [2023-12-20 07:49:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:47,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:47,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:47,806 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) [2023-12-20 07:49:47,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 07:49:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:49:47,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 07:49:47,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:47,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:49:47,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943659233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:49:47,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:49:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 07:49:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49491034] [2023-12-20 07:49:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:49:47,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 07:49:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 07:49:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:49:47,878 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:47,889 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-12-20 07:49:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 07:49:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-20 07:49:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:47,890 INFO L225 Difference]: With dead ends: 16 [2023-12-20 07:49:47,890 INFO L226 Difference]: Without dead ends: 10 [2023-12-20 07:49:47,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:49:47,891 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:47,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:49:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-20 07:49:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-20 07:49:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-12-20 07:49:47,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2023-12-20 07:49:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:47,894 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-12-20 07:49:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-20 07:49:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-20 07:49:47,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:47,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:47,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 07:49:48,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 07:49:48,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:48,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 352275824, now seen corresponding path program 1 times [2023-12-20 07:49:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:48,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030116249] [2023-12-20 07:49:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:48,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:48,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:49:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571572074] [2023-12-20 07:49:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:48,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:48,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:48,119 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) [2023-12-20 07:49:48,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 07:49:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:49:48,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 07:49:48,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:48,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:49:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:48,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:48,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030116249] [2023-12-20 07:49:48,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:49:48,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571572074] [2023-12-20 07:49:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571572074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:49:48,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:49:48,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-20 07:49:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731063119] [2023-12-20 07:49:48,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:49:48,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 07:49:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 07:49:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 07:49:48,209 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:48,232 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2023-12-20 07:49:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 07:49:48,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 8 [2023-12-20 07:49:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:48,233 INFO L225 Difference]: With dead ends: 17 [2023-12-20 07:49:48,233 INFO L226 Difference]: Without dead ends: 11 [2023-12-20 07:49:48,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 07:49:48,235 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:48,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:49:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-20 07:49:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-20 07:49:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-20 07:49:48,246 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2023-12-20 07:49:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:48,246 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-20 07:49:48,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-20 07:49:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-20 07:49:48,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:48,247 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:48,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 07:49:48,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:48,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:48,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash -712298109, now seen corresponding path program 2 times [2023-12-20 07:49:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:48,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243296560] [2023-12-20 07:49:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:48,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:49:48,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64713387] [2023-12-20 07:49:48,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:49:48,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:48,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:48,479 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) [2023-12-20 07:49:48,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 07:49:48,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:49:48,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:49:48,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 07:49:48,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:48,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 07:49:48,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:48,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:49:48,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:49:48,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:48,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:49:49,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:49,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 170 [2023-12-20 07:49:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:49,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243296560] [2023-12-20 07:49:49,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:49:49,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64713387] [2023-12-20 07:49:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64713387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:49:49,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:49:49,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-20 07:49:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3722874] [2023-12-20 07:49:49,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:49:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 07:49:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 07:49:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-20 07:49:49,124 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:49,274 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-12-20 07:49:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 07:49:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2023-12-20 07:49:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:49,275 INFO L225 Difference]: With dead ends: 40 [2023-12-20 07:49:49,275 INFO L226 Difference]: Without dead ends: 38 [2023-12-20 07:49:49,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-20 07:49:49,276 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:49,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 07:49:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-20 07:49:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 16. [2023-12-20 07:49:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-12-20 07:49:49,280 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-12-20 07:49:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:49,280 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-12-20 07:49:49,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-12-20 07:49:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-20 07:49:49,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:49,281 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:49,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 07:49:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:49,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:49,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash -207684829, now seen corresponding path program 3 times [2023-12-20 07:49:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:49,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299702691] [2023-12-20 07:49:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:49,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:49:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890669991] [2023-12-20 07:49:49,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 07:49:49,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:49,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:49,498 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) [2023-12-20 07:49:49,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 07:49:49,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 07:49:49,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:49:49,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 07:49:49,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:49,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 07:49:49,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:49,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:49,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:49,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:49:50,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:49:50,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:50,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:49:50,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:50,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3731 treesize of output 3672 [2023-12-20 07:49:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:51,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299702691] [2023-12-20 07:49:51,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:49:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890669991] [2023-12-20 07:49:51,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890669991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:49:51,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:49:51,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-20 07:49:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580136077] [2023-12-20 07:49:51,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:49:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 07:49:51,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:51,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 07:49:51,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-20 07:49:51,158 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:51,678 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2023-12-20 07:49:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 07:49:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 11 [2023-12-20 07:49:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:51,679 INFO L225 Difference]: With dead ends: 70 [2023-12-20 07:49:51,679 INFO L226 Difference]: Without dead ends: 68 [2023-12-20 07:49:51,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-12-20 07:49:51,680 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:51,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 79 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 07:49:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-20 07:49:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 20. [2023-12-20 07:49:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2023-12-20 07:49:51,686 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 11 [2023-12-20 07:49:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:51,686 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-12-20 07:49:51,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2023-12-20 07:49:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-20 07:49:51,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:51,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:51,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 07:49:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:51,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1365744233, now seen corresponding path program 1 times [2023-12-20 07:49:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851417967] [2023-12-20 07:49:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:51,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:51,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:49:51,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582795237] [2023-12-20 07:49:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:51,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:51,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:51,913 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) [2023-12-20 07:49:51,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 07:49:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:49:51,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 07:49:51,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:51,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:49:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:52,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:49:52,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:49:52,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:52,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:49:52,231 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-20 07:49:52,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 55 [2023-12-20 07:49:52,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:52,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2023-12-20 07:49:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851417967] [2023-12-20 07:49:52,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:49:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582795237] [2023-12-20 07:49:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582795237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:49:52,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:49:52,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-20 07:49:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834549967] [2023-12-20 07:49:52,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:49:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 07:49:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 07:49:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-12-20 07:49:52,283 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:52,858 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2023-12-20 07:49:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-20 07:49:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 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 12 [2023-12-20 07:49:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:52,859 INFO L225 Difference]: With dead ends: 68 [2023-12-20 07:49:52,859 INFO L226 Difference]: Without dead ends: 66 [2023-12-20 07:49:52,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 07:49:52,860 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:52,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 72 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 07:49:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-20 07:49:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 31. [2023-12-20 07:49:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-20 07:49:52,866 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 12 [2023-12-20 07:49:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:52,866 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-20 07:49:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-20 07:49:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 07:49:52,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:52,867 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:52,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 07:49:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:53,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:53,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1914432713, now seen corresponding path program 2 times [2023-12-20 07:49:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652041527] [2023-12-20 07:49:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:53,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:49:53,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641106579] [2023-12-20 07:49:53,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:49:53,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:53,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:53,081 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) [2023-12-20 07:49:53,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 07:49:53,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:49:53,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:49:53,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 07:49:53,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:53,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:49:53,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:49:53,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:49:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:53,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:49:53,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:49:53,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:53,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:49:53,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:49:53,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1537 treesize of output 1476 [2023-12-20 07:49:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:53,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:49:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652041527] [2023-12-20 07:49:53,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:49:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641106579] [2023-12-20 07:49:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641106579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:49:53,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:49:53,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-20 07:49:53,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98229533] [2023-12-20 07:49:53,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:49:53,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 07:49:53,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:49:53,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 07:49:53,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-20 07:49:53,856 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:49:54,200 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2023-12-20 07:49:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 07:49:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 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 14 [2023-12-20 07:49:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:49:54,200 INFO L225 Difference]: With dead ends: 84 [2023-12-20 07:49:54,200 INFO L226 Difference]: Without dead ends: 82 [2023-12-20 07:49:54,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-20 07:49:54,201 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 07:49:54,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 103 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 07:49:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-20 07:49:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 31. [2023-12-20 07:49:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-20 07:49:54,207 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2023-12-20 07:49:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:49:54,208 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-20 07:49:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:49:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-20 07:49:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 07:49:54,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:49:54,209 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:49:54,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 07:49:54,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:54,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:49:54,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:49:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash -776153501, now seen corresponding path program 4 times [2023-12-20 07:49:54,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:49:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453636091] [2023-12-20 07:49:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:49:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:49:54,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:49:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967468767] [2023-12-20 07:49:54,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 07:49:54,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:49:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:49:54,428 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) [2023-12-20 07:49:54,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 07:49:54,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 07:49:54,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:49:54,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 07:49:54,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:49:54,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 07:49:54,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-20 07:49:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:49:54,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:50:08,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:50:08,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:50:08,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:50:14,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:50:14,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45665310933 treesize of output 45648005068 [2023-12-20 07:50:20,149 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 29367 DAG size of output: 736 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 07:50:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:50:24,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:50:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453636091] [2023-12-20 07:50:24,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:50:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967468767] [2023-12-20 07:50:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967468767] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:50:24,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:50:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-20 07:50:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583925590] [2023-12-20 07:50:24,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:50:24,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 07:50:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:50:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 07:50:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-12-20 07:50:24,426 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:50:27,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-20 07:50:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:50:41,665 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2023-12-20 07:50:41,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-20 07:50:41,665 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 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 15 [2023-12-20 07:50:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:50:41,666 INFO L225 Difference]: With dead ends: 142 [2023-12-20 07:50:41,666 INFO L226 Difference]: Without dead ends: 140 [2023-12-20 07:50:41,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 07:50:41,667 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-20 07:50:41,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 269 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-20 07:50:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-20 07:50:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 39. [2023-12-20 07:50:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:50:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-12-20 07:50:41,695 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 15 [2023-12-20 07:50:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:50:41,695 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-12-20 07:50:41,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:50:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2023-12-20 07:50:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 07:50:41,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:50:41,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-20 07:50:41,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 07:50:41,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 07:50:41,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:50:41,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:50:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 108834896, now seen corresponding path program 3 times [2023-12-20 07:50:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:50:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300411917] [2023-12-20 07:50:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:50:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:50:41,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:50:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915644394] [2023-12-20 07:50:41,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 07:50:41,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:50:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:50:41,912 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) [2023-12-20 07:50:41,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 07:50:42,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 07:50:42,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:50:42,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-20 07:50:42,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:50:42,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:50:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:50:42,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:50:42,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:50:42,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:50:42,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:50:42,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:50:42,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 52 [2023-12-20 07:50:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:50:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:50:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300411917] [2023-12-20 07:50:42,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:50:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915644394] [2023-12-20 07:50:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915644394] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:50:42,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:50:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-20 07:50:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895446092] [2023-12-20 07:50:42,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:50:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 07:50:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:50:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 07:50:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-20 07:50:42,685 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:50:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:50:45,768 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-12-20 07:50:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 07:50:45,769 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2023-12-20 07:50:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:50:45,769 INFO L225 Difference]: With dead ends: 103 [2023-12-20 07:50:45,769 INFO L226 Difference]: Without dead ends: 101 [2023-12-20 07:50:45,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1230, Invalid=4622, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 07:50:45,773 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 170 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 07:50:45,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 113 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 07:50:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-20 07:50:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 47. [2023-12-20 07:50:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:50:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2023-12-20 07:50:45,798 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 16 [2023-12-20 07:50:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:50:45,798 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2023-12-20 07:50:45,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:50:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-12-20 07:50:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 07:50:45,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:50:45,799 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:50:45,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 07:50:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:50:46,006 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:50:46,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:50:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 813779004, now seen corresponding path program 4 times [2023-12-20 07:50:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:50:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336058705] [2023-12-20 07:50:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:50:46,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:50:46,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:50:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046923150] [2023-12-20 07:50:46,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 07:50:46,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:50:46,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:50:46,016 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) [2023-12-20 07:50:46,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 07:50:46,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 07:50:46,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:50:46,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 07:50:46,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:50:46,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:50:46,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:50:46,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:50:46,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:50:46,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:50:46,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:50:46,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-20 07:50:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:50:46,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:50:51,484 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse15 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse18 (* .cse16 8)) (.cse17 (* 8 .cse15))) (let ((.cse0 (< .cse15 2147483648)) (.cse4 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse2 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (< 2147483647 .cse16)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse10 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|) 1)) (.cse9 (< .cse16 2147483648)) (.cse11 (< 2147483647 .cse15)) (.cse12 (* .cse13 8))) (and (or (let ((.cse3 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse0 (and (or (forall ((v_DerPreprocessor_58 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_58) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_DerPreprocessor_57 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse6) (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_57) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1))) .cse9))) (or (forall ((v_DerPreprocessor_56 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_56) .cse3 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse11))) (< .cse13 2147483648)) (or (< 2147483647 .cse13) (let ((.cse14 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_59) .cse14 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6)))) (or (and (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_61) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_60) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse9)) .cse11)))))))) is different from false [2023-12-20 07:52:22,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:52:23,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:52:23,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:52:24,850 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-12-20 07:52:24,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9624 treesize of output 9482 [2023-12-20 07:52:27,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:52:27,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8372 treesize of output 8282 [2023-12-20 07:52:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 3 times theorem prover too weak. 0 trivial. 7 not checked. [2023-12-20 07:52:28,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:52:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336058705] [2023-12-20 07:52:28,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:52:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046923150] [2023-12-20 07:52:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046923150] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:52:28,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:52:28,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-20 07:52:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941746938] [2023-12-20 07:52:28,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:52:28,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 07:52:28,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:52:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 07:52:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=322, Unknown=21, NotChecked=38, Total=462 [2023-12-20 07:52:28,381 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:52:32,693 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse35 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse33 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse32 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse26 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse31 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse27 (* .cse31 8)) (.cse28 (* 8 .cse26)) (.cse29 (* .cse32 8)) (.cse30 (* .cse33 8)) (.cse34 (* .cse35 8)) (.cse25 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse6 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) .cse25 1)) (.cse22 (< 2147483647 .cse35)) (.cse21 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse24 (< .cse35 2147483648)) (.cse20 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 9 .cse25)) (.cse23 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (< .cse33 2147483648)) (.cse7 (< 2147483647 .cse33)) (.cse3 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (< .cse32 2147483648)) (.cse13 (< 2147483647 .cse32)) (.cse4 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse0 (< .cse26 2147483648)) (.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse27)) (.cse19 (< 2147483647 .cse31)) (.cse17 (< .cse31 2147483648)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse27)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) .cse25 4)) (.cse11 (< 2147483647 .cse26))) (and (or (and (or .cse0 (and (or (forall ((v_DerPreprocessor_58 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_58) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_DerPreprocessor_57 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse6) (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_57) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1))) .cse9))) (or (forall ((v_DerPreprocessor_56 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_56) .cse3 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse11)) .cse12) (= (select .cse1 .cse5) 1) (or (and (or (and (or .cse13 (forall ((v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse14 v_DerPreprocessor_61) .cse10 v_prenex_386) .cse15 v_prenex_387) .cse5) 1) (< v_prenex_386 .cse16)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_63 Int)) (or (< v_ArrVal_211 .cse16) (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_60) .cse10 v_ArrVal_211) .cse15 v_DerPreprocessor_53) .cse5) 1))) .cse12)) .cse11) (or .cse0 (and (or .cse17 (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_57) .cse4 v_prenex_391) .cse18 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse16)))) (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_393 Int) (v_DerPreprocessor_63 Int)) (or (< v_prenex_392 .cse16) (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_56) .cse4 v_prenex_392) .cse15 v_prenex_393) .cse5) 1))) .cse19)))) .cse9) (or .cse7 (and (or .cse13 (and (or .cse17 (and (or .cse0 (forall ((v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_64 Int) (v_prenex_417 Int) (v_prenex_416 Int)) (or (< v_prenex_382 .cse20) (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_prenex_416) .cse4 v_prenex_417) .cse18 v_prenex_382) .cse21 v_prenex_385) .cse5) 1)))) (or (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_DerPreprocessor_64 Int) (v_prenex_380 Int) (v_prenex_415 Int)) (or (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_prenex_415) .cse10 v_DerPreprocessor_58) .cse18 v_prenex_380) .cse21 v_prenex_381) .cse5) 1) (< v_prenex_380 .cse20))) .cse11))) (or (and (or .cse22 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_64 Int) (v_prenex_418 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_DerPreprocessor_62) .cse10 v_prenex_418) .cse15 v_prenex_377) .cse23 v_prenex_378) .cse5) 1) (< v_prenex_377 .cse20)))) (or (forall ((v_prenex_414 Int) (v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_64 Int) (v_DerPreprocessor_54 Int)) (or (< v_prenex_379 .cse20) (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_prenex_414) .cse10 v_DerPreprocessor_59) .cse15 v_prenex_379) .cse21 v_DerPreprocessor_54) .cse5) 1))) .cse24)) .cse19))) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_64 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse3 v_DerPreprocessor_63) .cse4 v_DerPreprocessor_57) .cse18 v_prenex_391) .cse21 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse20))) .cse12))) (or .cse13 (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_59) .cse14 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6)))) (or (and (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_61) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_60) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse9)) .cse11))) (<= 25 (select .cse1 (+ 40 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or .cse7 (and (or .cse13 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse2 v_ArrVal_211) .cse14 v_DerPreprocessor_53) .cse5) 1)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse2 v_ArrVal_211) .cse3 v_DerPreprocessor_54) .cse5) 1))) .cse12))) (or (and (or (and (or .cse17 (and (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_419 Int) (v_prenex_393 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_prenex_419) .cse4 v_DerPreprocessor_56) .cse18 v_prenex_392) .cse23 v_prenex_393) .cse5) 1) (< v_prenex_392 .cse20))) .cse22) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_65 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_DerPreprocessor_63) .cse4 v_DerPreprocessor_57) .cse18 v_prenex_391) .cse21 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse20))) .cse24))) (or (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_prenex_421 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_prenex_421) .cse4 v_DerPreprocessor_60) .cse15 v_ArrVal_211) .cse23 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse20)))) (or (forall ((v_prenex_420 Int) (v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_65 Int)) (or (< v_prenex_386 .cse20) (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_prenex_420) .cse10 v_DerPreprocessor_61) .cse15 v_prenex_386) .cse23 v_prenex_387) .cse5) 1))) .cse11)) .cse19)) .cse12) (or .cse13 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_65 Int) (v_DerPreprocessor_62 Int) (v_prenex_426 Int)) (or (< v_prenex_377 .cse20) (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse14 v_DerPreprocessor_62) .cse10 v_prenex_426) .cse15 v_prenex_377) .cse23 v_prenex_378) .cse5) 1))))) .cse9) (or (and (or .cse12 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse8 v_ArrVal_211) .cse3 v_DerPreprocessor_54) .cse5) 1)))) (or .cse13 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse8 v_ArrVal_211) .cse14 v_DerPreprocessor_53) .cse5) 1))))) .cse9) (or .cse7 (and (or (and (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_62 Int)) (or (< v_prenex_382 .cse16) (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse3 v_DerPreprocessor_57) .cse4 v_prenex_382) .cse18 v_prenex_385) .cse5) 1))) .cse12) (or .cse13 (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_prenex_380 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_58) .cse4 v_prenex_380) .cse18 v_prenex_381) .cse5) 1) (< v_prenex_380 .cse16))))) .cse0) (or (and (or (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_61) .cse10 v_prenex_377) .cse15 v_prenex_378) .cse5) 1) (< v_prenex_377 .cse16))) .cse19) (or .cse17 (forall ((v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_59) .cse10 v_prenex_379) .cse18 v_DerPreprocessor_54) .cse5) 1) (< v_prenex_379 .cse16))))) .cse11))))))) is different from false [2023-12-20 07:53:17,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:53:21,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:53:42,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:54:11,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:54:15,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:55:45,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:55:49,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:55:50,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:56:47,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:56:51,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:56:55,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:56:59,437 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse26 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse25 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse19 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse24 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse20 (* .cse24 8)) (.cse21 (* 8 .cse19)) (.cse22 (* .cse25 8)) (.cse23 (* .cse26 8))) (let ((.cse18 (< .cse26 2147483648)) (.cse5 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse0 (< 2147483647 .cse26)) (.cse10 (+ .cse22 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (< .cse25 2147483648)) (.cse4 (< 2147483647 .cse25)) (.cse15 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (< .cse19 2147483648)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse20)) (.cse17 (< 2147483647 .cse24)) (.cse14 (< .cse24 2147483648)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse20)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|) 4)) (.cse12 (< 2147483647 .cse19))) (and (or .cse0 (forall ((v_DerPreprocessor_53 Int)) (= (select (store .cse1 .cse2 v_DerPreprocessor_53) .cse3) 1))) (or (and (or (and (or .cse4 (forall ((v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse5 v_DerPreprocessor_63) .cse6 v_DerPreprocessor_61) .cse7 v_prenex_386) .cse8 v_prenex_387) .cse3) 1) (< v_prenex_386 .cse9)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_63 Int)) (or (< v_ArrVal_211 .cse9) (= (select (store (store (store (store .cse1 .cse5 v_DerPreprocessor_63) .cse10 v_DerPreprocessor_60) .cse7 v_ArrVal_211) .cse8 v_DerPreprocessor_53) .cse3) 1))) .cse11)) .cse12) (or .cse13 (and (or .cse14 (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse5 v_DerPreprocessor_63) .cse10 v_DerPreprocessor_57) .cse15 v_prenex_391) .cse16 v_prenex_394) .cse3) 1) (< v_prenex_391 .cse9)))) (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_393 Int) (v_DerPreprocessor_63 Int)) (or (< v_prenex_392 .cse9) (= (select (store (store (store (store .cse1 .cse5 v_DerPreprocessor_63) .cse10 v_DerPreprocessor_56) .cse15 v_prenex_392) .cse8 v_prenex_393) .cse3) 1))) .cse17)))) .cse18) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or .cse18 (forall ((v_DerPreprocessor_54 Int)) (= (select (store .cse1 .cse5 v_DerPreprocessor_54) .cse3) 1))) (or .cse0 (and (or (and (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_62 Int)) (or (< v_prenex_382 .cse9) (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse10 v_DerPreprocessor_57) .cse15 v_prenex_382) .cse16 v_prenex_385) .cse3) 1))) .cse11) (or .cse4 (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_prenex_380 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse6 v_DerPreprocessor_58) .cse15 v_prenex_380) .cse16 v_prenex_381) .cse3) 1) (< v_prenex_380 .cse9))))) .cse13) (or (and (or (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse6 v_DerPreprocessor_61) .cse7 v_prenex_377) .cse8 v_prenex_378) .cse3) 1) (< v_prenex_377 .cse9))) .cse17) (or .cse14 (forall ((v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse6 v_DerPreprocessor_59) .cse7 v_prenex_379) .cse16 v_DerPreprocessor_54) .cse3) 1) (< v_prenex_379 .cse9))))) .cse12))))))) is different from false [2023-12-20 07:57:03,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:57:07,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:57:11,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-20 07:57:15,763 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse34 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse32 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse31 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse25 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse30 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse26 (* .cse30 8)) (.cse27 (* 8 .cse25)) (.cse28 (* .cse31 8)) (.cse29 (* .cse32 8)) (.cse24 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (.cse33 (* .cse34 8))) (let ((.cse21 (< 2147483647 .cse34)) (.cse20 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse23 (< .cse34 2147483648)) (.cse18 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 9 .cse24)) (.cse22 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse16 (< .cse32 2147483648)) (.cse17 (< 2147483647 .cse32)) (.cse8 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (< .cse31 2147483648)) (.cse2 (< 2147483647 .cse31)) (.cse13 (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (< .cse25 2147483648)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse26)) (.cse15 (< 2147483647 .cse30)) (.cse12 (< .cse30 2147483648)) (.cse0 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse19 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse26)) (.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) .cse24 4)) (.cse10 (< 2147483647 .cse25))) (and (= (select .cse0 .cse1) 1) (or (and (or (and (or .cse2 (forall ((v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse0 .cse3 v_DerPreprocessor_63) .cse4 v_DerPreprocessor_61) .cse5 v_prenex_386) .cse6 v_prenex_387) .cse1) 1) (< v_prenex_386 .cse7)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_63 Int)) (or (< v_ArrVal_211 .cse7) (= (select (store (store (store (store .cse0 .cse3 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_60) .cse5 v_ArrVal_211) .cse6 v_DerPreprocessor_53) .cse1) 1))) .cse9)) .cse10) (or .cse11 (and (or .cse12 (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse0 .cse3 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_57) .cse13 v_prenex_391) .cse14 v_prenex_394) .cse1) 1) (< v_prenex_391 .cse7)))) (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_393 Int) (v_DerPreprocessor_63 Int)) (or (< v_prenex_392 .cse7) (= (select (store (store (store (store .cse0 .cse3 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_56) .cse13 v_prenex_392) .cse6 v_prenex_393) .cse1) 1))) .cse15)))) .cse16) (or .cse17 (and (or .cse2 (and (or .cse12 (and (or .cse11 (forall ((v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_64 Int) (v_prenex_417 Int) (v_prenex_416 Int)) (or (< v_prenex_382 .cse18) (= (select (store (store (store (store (store .cse0 .cse19 v_DerPreprocessor_64) .cse4 v_prenex_416) .cse13 v_prenex_417) .cse14 v_prenex_382) .cse20 v_prenex_385) .cse1) 1)))) (or (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_DerPreprocessor_64 Int) (v_prenex_380 Int) (v_prenex_415 Int)) (or (= (select (store (store (store (store (store .cse0 .cse19 v_DerPreprocessor_64) .cse4 v_prenex_415) .cse5 v_DerPreprocessor_58) .cse14 v_prenex_380) .cse20 v_prenex_381) .cse1) 1) (< v_prenex_380 .cse18))) .cse10))) (or (and (or .cse21 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_64 Int) (v_prenex_418 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store (store .cse0 .cse19 v_DerPreprocessor_64) .cse4 v_DerPreprocessor_62) .cse5 v_prenex_418) .cse6 v_prenex_377) .cse22 v_prenex_378) .cse1) 1) (< v_prenex_377 .cse18)))) (or (forall ((v_prenex_414 Int) (v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_64 Int) (v_DerPreprocessor_54 Int)) (or (< v_prenex_379 .cse18) (= (select (store (store (store (store (store .cse0 .cse19 v_DerPreprocessor_64) .cse4 v_prenex_414) .cse5 v_DerPreprocessor_59) .cse6 v_prenex_379) .cse20 v_DerPreprocessor_54) .cse1) 1))) .cse23)) .cse15))) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_64 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse0 .cse19 v_DerPreprocessor_64) .cse8 v_DerPreprocessor_63) .cse13 v_DerPreprocessor_57) .cse14 v_prenex_391) .cse20 v_prenex_394) .cse1) 1) (< v_prenex_391 .cse18))) .cse9))) (<= 25 (select .cse0 (+ 40 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or .cse17 (and (or .cse2 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse24) (= (select (store (store .cse0 .cse19 v_ArrVal_211) .cse4 v_DerPreprocessor_53) .cse1) 1)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse24) (= (select (store (store .cse0 .cse19 v_ArrVal_211) .cse8 v_DerPreprocessor_54) .cse1) 1))) .cse9))) (or (and (or (and (or .cse12 (and (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_419 Int) (v_prenex_393 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse0 .cse3 v_DerPreprocessor_65) .cse8 v_prenex_419) .cse13 v_DerPreprocessor_56) .cse14 v_prenex_392) .cse22 v_prenex_393) .cse1) 1) (< v_prenex_392 .cse18))) .cse21) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_65 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse0 .cse3 v_DerPreprocessor_65) .cse8 v_DerPreprocessor_63) .cse13 v_DerPreprocessor_57) .cse14 v_prenex_391) .cse20 v_prenex_394) .cse1) 1) (< v_prenex_391 .cse18))) .cse23))) (or (and (or .cse11 (forall ((v_ArrVal_211 Int) (v_prenex_421 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse0 .cse3 v_DerPreprocessor_65) .cse8 v_prenex_421) .cse13 v_DerPreprocessor_60) .cse6 v_ArrVal_211) .cse22 v_DerPreprocessor_53) .cse1) 1) (< v_ArrVal_211 .cse18)))) (or (forall ((v_prenex_420 Int) (v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_65 Int)) (or (< v_prenex_386 .cse18) (= (select (store (store (store (store (store .cse0 .cse3 v_DerPreprocessor_65) .cse8 v_prenex_420) .cse5 v_DerPreprocessor_61) .cse6 v_prenex_386) .cse22 v_prenex_387) .cse1) 1))) .cse10)) .cse15)) .cse9) (or .cse2 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_65 Int) (v_DerPreprocessor_62 Int) (v_prenex_426 Int)) (or (< v_prenex_377 .cse18) (= (select (store (store (store (store (store .cse0 .cse3 v_DerPreprocessor_65) .cse4 v_DerPreprocessor_62) .cse5 v_prenex_426) .cse6 v_prenex_377) .cse22 v_prenex_378) .cse1) 1))))) .cse16) (or (and (or .cse9 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse24) (= (select (store (store .cse0 .cse3 v_ArrVal_211) .cse8 v_DerPreprocessor_54) .cse1) 1)))) (or .cse2 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse24) (= (select (store (store .cse0 .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_53) .cse1) 1))))) .cse16) (or .cse17 (and (or (and (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_62 Int)) (or (< v_prenex_382 .cse7) (= (select (store (store (store (store .cse0 .cse19 v_DerPreprocessor_62) .cse8 v_DerPreprocessor_57) .cse13 v_prenex_382) .cse14 v_prenex_385) .cse1) 1))) .cse9) (or .cse2 (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_prenex_380 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse0 .cse19 v_DerPreprocessor_62) .cse4 v_DerPreprocessor_58) .cse13 v_prenex_380) .cse14 v_prenex_381) .cse1) 1) (< v_prenex_380 .cse7))))) .cse11) (or (and (or (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse0 .cse19 v_DerPreprocessor_62) .cse4 v_DerPreprocessor_61) .cse5 v_prenex_377) .cse6 v_prenex_378) .cse1) 1) (< v_prenex_377 .cse7))) .cse15) (or .cse12 (forall ((v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse0 .cse19 v_DerPreprocessor_62) .cse4 v_DerPreprocessor_59) .cse5 v_prenex_379) .cse14 v_DerPreprocessor_54) .cse1) 1) (< v_prenex_379 .cse7))))) .cse10))))))) is different from false [2023-12-20 07:57:15,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:57:15,774 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2023-12-20 07:57:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 07:57:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 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 17 [2023-12-20 07:57:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:57:15,775 INFO L225 Difference]: With dead ends: 164 [2023-12-20 07:57:15,775 INFO L226 Difference]: Without dead ends: 162 [2023-12-20 07:57:15,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 327.3s TimeCoverageRelationStatistics Valid=419, Invalid=1783, Unknown=70, NotChecked=380, Total=2652 [2023-12-20 07:57:15,777 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 184 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 51 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time [2023-12-20 07:57:15,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 333 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 490 Invalid, 13 Unknown, 186 Unchecked, 54.6s Time] [2023-12-20 07:57:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-20 07:57:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 47. [2023-12-20 07:57:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2023-12-20 07:57:15,799 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 17 [2023-12-20 07:57:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:57:15,799 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2023-12-20 07:57:15,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-12-20 07:57:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-20 07:57:15,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:57:15,799 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-20 07:57:15,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 07:57:16,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 07:57:16,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:57:16,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:57:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash 906023600, now seen corresponding path program 5 times [2023-12-20 07:57:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:57:16,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40018566] [2023-12-20 07:57:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:57:16,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:57:16,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:57:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793660754] [2023-12-20 07:57:16,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 07:57:16,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:57:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:57:16,010 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) [2023-12-20 07:57:16,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 07:57:23,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-20 07:57:23,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:57:23,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 07:57:23,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:57:23,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:57:23,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:57:23,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:57:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:23,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:57:23,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:57:23,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:23,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:57:24,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:24,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 684 treesize of output 654 [2023-12-20 07:57:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:24,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:57:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40018566] [2023-12-20 07:57:24,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:57:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793660754] [2023-12-20 07:57:24,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793660754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:57:24,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:57:24,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2023-12-20 07:57:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614844472] [2023-12-20 07:57:24,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:57:24,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 07:57:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:57:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 07:57:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-20 07:57:24,264 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:57:25,340 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2023-12-20 07:57:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-20 07:57:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 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 18 [2023-12-20 07:57:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:57:25,341 INFO L225 Difference]: With dead ends: 127 [2023-12-20 07:57:25,341 INFO L226 Difference]: Without dead ends: 125 [2023-12-20 07:57:25,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 07:57:25,342 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 07:57:25,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 169 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 07:57:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-20 07:57:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 47. [2023-12-20 07:57:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2023-12-20 07:57:25,361 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2023-12-20 07:57:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:57:25,362 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2023-12-20 07:57:25,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-12-20 07:57:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 07:57:25,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:57:25,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-20 07:57:25,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 07:57:25,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 07:57:25,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:57:25,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:57:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1131975031, now seen corresponding path program 6 times [2023-12-20 07:57:25,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:57:25,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155777466] [2023-12-20 07:57:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:57:25,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:57:25,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:57:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18294919] [2023-12-20 07:57:25,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 07:57:25,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:57:25,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:57:25,580 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) [2023-12-20 07:57:25,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 07:57:25,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-20 07:57:25,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:57:25,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 07:57:25,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:57:25,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:57:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:25,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:57:26,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:57:26,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:26,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:57:26,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:26,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 39 [2023-12-20 07:57:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:57:26,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155777466] [2023-12-20 07:57:26,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:57:26,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18294919] [2023-12-20 07:57:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18294919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:57:26,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:57:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-20 07:57:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612598050] [2023-12-20 07:57:26,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:57:26,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 07:57:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:57:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 07:57:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-12-20 07:57:26,705 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:57:28,145 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2023-12-20 07:57:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 07:57:28,145 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 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 20 [2023-12-20 07:57:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:57:28,145 INFO L225 Difference]: With dead ends: 115 [2023-12-20 07:57:28,145 INFO L226 Difference]: Without dead ends: 81 [2023-12-20 07:57:28,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=478, Invalid=2602, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 07:57:28,147 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 153 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 07:57:28,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 186 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 07:57:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-20 07:57:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 40. [2023-12-20 07:57:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-12-20 07:57:28,168 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 20 [2023-12-20 07:57:28,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:57:28,168 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-12-20 07:57:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-12-20 07:57:28,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 07:57:28,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:57:28,169 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-20 07:57:28,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 07:57:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 07:57:28,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:57:28,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:57:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1117076643, now seen corresponding path program 7 times [2023-12-20 07:57:28,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:57:28,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28312165] [2023-12-20 07:57:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:57:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:57:28,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:57:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350710404] [2023-12-20 07:57:28,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 07:57:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:57:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:57:28,378 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) [2023-12-20 07:57:28,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 07:57:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:57:28,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-20 07:57:28,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:57:28,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:57:28,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:57:28,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-20 07:57:28,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:28,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-20 07:57:28,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:28,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-20 07:57:28,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:28,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-20 07:57:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:29,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:57:32,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:57:32,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:32,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:57:33,944 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-12-20 07:57:33,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3978 treesize of output 3908 [2023-12-20 07:57:35,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:35,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 356722 treesize of output 354616 [2023-12-20 07:57:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:57:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28312165] [2023-12-20 07:57:37,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:57:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350710404] [2023-12-20 07:57:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350710404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:57:37,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:57:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-12-20 07:57:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140224529] [2023-12-20 07:57:37,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:57:37,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 07:57:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:57:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 07:57:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2023-12-20 07:57:37,545 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:57:55,920 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2023-12-20 07:57:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-20 07:57:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 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 21 [2023-12-20 07:57:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:57:55,921 INFO L225 Difference]: With dead ends: 192 [2023-12-20 07:57:55,921 INFO L226 Difference]: Without dead ends: 190 [2023-12-20 07:57:55,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2421 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=1150, Invalid=7222, Unknown=0, NotChecked=0, Total=8372 [2023-12-20 07:57:55,923 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 271 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 07:57:55,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 358 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 07:57:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-20 07:57:55,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 52. [2023-12-20 07:57:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-12-20 07:57:55,962 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 21 [2023-12-20 07:57:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:57:55,962 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-12-20 07:57:55,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-12-20 07:57:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 07:57:55,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:57:55,963 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-20 07:57:55,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 07:57:56,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 07:57:56,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:57:56,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:57:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1779879452, now seen corresponding path program 8 times [2023-12-20 07:57:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:57:56,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176021758] [2023-12-20 07:57:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:57:56,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:57:56,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:57:56,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497062649] [2023-12-20 07:57:56,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:57:56,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:57:56,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:57:56,180 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) [2023-12-20 07:57:56,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 07:57:56,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:57:56,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:57:56,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 07:57:56,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:57:56,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 07:57:56,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-20 07:57:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:56,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:57:56,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-20 07:57:56,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:56,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-12-20 07:57:57,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 07:57:57,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2023-12-20 07:57:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:57:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:57:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176021758] [2023-12-20 07:57:57,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:57:57,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497062649] [2023-12-20 07:57:57,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497062649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:57:57,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:57:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2023-12-20 07:57:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606788716] [2023-12-20 07:57:57,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:57:57,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 07:57:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:57:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 07:57:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-20 07:57:57,100 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:57:57,853 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2023-12-20 07:57:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-20 07:57:57,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 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 21 [2023-12-20 07:57:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:57:57,854 INFO L225 Difference]: With dead ends: 124 [2023-12-20 07:57:57,854 INFO L226 Difference]: Without dead ends: 122 [2023-12-20 07:57:57,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 07:57:57,855 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 07:57:57,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 159 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 07:57:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-20 07:57:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 56. [2023-12-20 07:57:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-12-20 07:57:57,898 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 21 [2023-12-20 07:57:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:57:57,899 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-12-20 07:57:57,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:57:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-12-20 07:57:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 07:57:57,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:57:57,900 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:57:57,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 07:57:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:57:58,106 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:57:58,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:57:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2015997155, now seen corresponding path program 5 times [2023-12-20 07:57:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:57:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739273854] [2023-12-20 07:57:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:57:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:57:58,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:57:58,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970962385] [2023-12-20 07:57:58,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 07:57:58,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:57:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:57:58,116 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) [2023-12-20 07:57:58,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 08:04:25,860 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 08:04:25,860 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 [2023-12-20 08:04:27,061 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-12-20 08:04:27,061 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-20 08:04:27,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-12-20 08:04:27,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 08:04:27,073 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 08:04:27,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 08:04:27,073 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 24 with TraceHistMax 16,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 08:04:27,076 INFO L445 BasicCegarLoop]: Path program histogram: [8, 5, 1, 1] [2023-12-20 08:04:27,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 08:04:27,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 08:04:27 BoogieIcfgContainer [2023-12-20 08:04:27,079 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 08:04:27,079 INFO L158 Benchmark]: Toolchain (without parser) took 880366.24ms. Allocated memory was 314.6MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 262.3MB in the beginning and 1.0GB in the end (delta: -749.6MB). Peak memory consumption was 275.9MB. Max. memory is 8.0GB. [2023-12-20 08:04:27,079 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 192.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 08:04:27,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.21ms. Allocated memory is still 314.6MB. Free memory was 262.3MB in the beginning and 251.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 08:04:27,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.88ms. Allocated memory is still 314.6MB. Free memory was 251.3MB in the beginning and 249.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 08:04:27,079 INFO L158 Benchmark]: Boogie Preprocessor took 43.18ms. Allocated memory is still 314.6MB. Free memory was 249.7MB in the beginning and 247.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 08:04:27,079 INFO L158 Benchmark]: RCFGBuilder took 282.70ms. Allocated memory is still 314.6MB. Free memory was 247.6MB in the beginning and 235.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 08:04:27,079 INFO L158 Benchmark]: TraceAbstraction took 879856.17ms. Allocated memory was 314.6MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 235.0MB in the beginning and 1.0GB in the end (delta: -776.8MB). Peak memory consumption was 248.7MB. Max. memory is 8.0GB. [2023-12-20 08:04:27,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-20 08:04:27,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 192.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 154.21ms. Allocated memory is still 314.6MB. Free memory was 262.3MB in the beginning and 251.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.88ms. Allocated memory is still 314.6MB. Free memory was 251.3MB in the beginning and 249.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.18ms. Allocated memory is still 314.6MB. Free memory was 249.7MB in the beginning and 247.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 282.70ms. Allocated memory is still 314.6MB. Free memory was 247.6MB in the beginning and 235.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 879856.17ms. Allocated memory was 314.6MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 235.0MB in the beginning and 1.0GB in the end (delta: -776.8MB). Peak memory consumption was 248.7MB. 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: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was analyzing trace of length 24 with TraceHistMax 16,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.8s, OverallIterations: 15, TraceHistogramMax: 16, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 331.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 1309 SdHoareTripleChecker+Valid, 66.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1309 mSDsluCounter, 1910 SdHoareTripleChecker+Invalid, 66.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 186 IncrementalHoareTripleChecker+Unchecked, 1676 mSDsCounter, 470 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3327 IncrementalHoareTripleChecker+Invalid, 3996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 470 mSolverCounterUnsat, 234 mSDtfsCounter, 3327 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 630 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 475 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 6774 ImplicationChecksByTransitivity, 374.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=14, InterpolantAutomatonStates: 431, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 749 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 147.5s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 352 ConstructedInterpolants, 26 QuantifiedInterpolants, 15326 SizeOfPredicates, 125 NumberOfNonLiveVariables, 1501 ConjunctsInSsa, 388 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 0/460 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