/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:51:56,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:51:56,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 17:51:56,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:51:56,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:51:56,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:51:56,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:51:56,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:51:56,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:51:56,363 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:51:56,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:51:56,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:51:56,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:51:56,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:51:56,365 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:51:56,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:51:56,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:51:56,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:51:56,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:51:56,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:51:56,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:51:56,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:51:56,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:51:56,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:51:56,367 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:51:56,367 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:51:56,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:51:56,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:51:56,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:51:56,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:51:56,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:51:56,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:51:56,369 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:51:56,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:51:56,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:51:56,370 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:51:56,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:51:56,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:51:56,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:51:56,561 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:51:56,562 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:51:56,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2023-12-19 17:51:57,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 17:51:57,700 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 17:51:57,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2023-12-19 17:51:57,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940ffdf95/21f29dc179ad4e798bf8061608f9a28e/FLAG046a4e887 [2023-12-19 17:51:57,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940ffdf95/21f29dc179ad4e798bf8061608f9a28e [2023-12-19 17:51:57,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 17:51:57,723 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 17:51:57,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 17:51:57,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 17:51:57,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 17:51:57,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557ceedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57, skipping insertion in model container [2023-12-19 17:51:57,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 17:51:57,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2023-12-19 17:51:57,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:51:57,869 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 17:51:57,880 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2023-12-19 17:51:57,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:51:57,892 INFO L206 MainTranslator]: Completed translation [2023-12-19 17:51:57,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57 WrapperNode [2023-12-19 17:51:57,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 17:51:57,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 17:51:57,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 17:51:57,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 17:51:57,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,912 INFO L138 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-12-19 17:51:57,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 17:51:57,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 17:51:57,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 17:51:57,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 17:51:57,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,927 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-19 17:51:57,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 17:51:57,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 17:51:57,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 17:51:57,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 17:51:57,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (1/1) ... [2023-12-19 17:51:57,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:51:57,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:51:57,965 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) [2023-12-19 17:51:57,971 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 [2023-12-19 17:51:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 17:51:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 17:51:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 17:51:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-19 17:51:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 17:51:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 17:51:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 17:51:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 17:51:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 17:51:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 17:51:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-19 17:51:58,030 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 17:51:58,032 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 17:51:58,110 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 17:51:58,131 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 17:51:58,131 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 17:51:58,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:51:58 BoogieIcfgContainer [2023-12-19 17:51:58,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 17:51:58,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 17:51:58,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 17:51:58,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 17:51:58,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:51:57" (1/3) ... [2023-12-19 17:51:58,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1fa3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:51:58, skipping insertion in model container [2023-12-19 17:51:58,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:51:57" (2/3) ... [2023-12-19 17:51:58,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1fa3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:51:58, skipping insertion in model container [2023-12-19 17:51:58,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:51:58" (3/3) ... [2023-12-19 17:51:58,136 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2023-12-19 17:51:58,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 17:51:58,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 17:51:58,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 17:51:58,182 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;@7334c0d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 17:51:58,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 17:51:58,185 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) [2023-12-19 17:51:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 17:51:58,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:51:58,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 17:51:58,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:51:58,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:51:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1812750295, now seen corresponding path program 1 times [2023-12-19 17:51:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:51:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425643560] [2023-12-19 17:51:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:51:58,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:51:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:51:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:51:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:51:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425643560] [2023-12-19 17:51:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425643560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:51:58,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:51:58,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:51:58,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035906594] [2023-12-19 17:51:58,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:51:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 17:51:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:51:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 17:51:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:51:58,322 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:51:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:51:58,354 INFO L93 Difference]: Finished difference Result 23 states and 33 transitions. [2023-12-19 17:51:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:51:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-19 17:51:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:51:58,360 INFO L225 Difference]: With dead ends: 23 [2023-12-19 17:51:58,360 INFO L226 Difference]: Without dead ends: 10 [2023-12-19 17:51:58,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:51:58,364 INFO L413 NwaCegarLoop]: 9 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, 9 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 [2023-12-19 17:51:58,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:51:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-19 17:51:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-19 17:51:58,400 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) [2023-12-19 17:51:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-12-19 17:51:58,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-12-19 17:51:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:51:58,402 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-12-19 17:51:58,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:51:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-19 17:51:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 17:51:58,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:51:58,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 17:51:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 17:51:58,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:51:58,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:51:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1824756068, now seen corresponding path program 1 times [2023-12-19 17:51:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:51:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522108027] [2023-12-19 17:51:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:51:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:51:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:51:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:51:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:51:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522108027] [2023-12-19 17:51:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522108027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:51:58,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:51:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:51:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699535888] [2023-12-19 17:51:58,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:51:58,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 17:51:58,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:51:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 17:51:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 17:51:58,540 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:51:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:51:58,560 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-12-19 17:51:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 17:51:58,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-19 17:51:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:51:58,560 INFO L225 Difference]: With dead ends: 24 [2023-12-19 17:51:58,561 INFO L226 Difference]: Without dead ends: 18 [2023-12-19 17:51:58,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 17:51:58,562 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:51:58,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:51:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-19 17:51:58,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2023-12-19 17:51:58,569 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) [2023-12-19 17:51:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-19 17:51:58,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2023-12-19 17:51:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:51:58,570 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-19 17:51:58,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:51:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-19 17:51:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 17:51:58,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:51:58,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:51:58,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 17:51:58,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:51:58,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:51:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1407704727, now seen corresponding path program 1 times [2023-12-19 17:51:58,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:51:58,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348667111] [2023-12-19 17:51:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:51:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:51:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:51:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:51:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:51:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348667111] [2023-12-19 17:51:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348667111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:51:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904464184] [2023-12-19 17:51:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:51:58,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:51:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:51:58,711 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) [2023-12-19 17:51:58,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 17:51:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:51:58,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 17:51:58,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:51:58,846 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 15 treesize of output 1 [2023-12-19 17:51:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:51:58,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:51:58,937 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 44 treesize of output 40 [2023-12-19 17:51:58,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:51:58,949 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 40 treesize of output 87 [2023-12-19 17:51:59,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:51:59,011 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 56 [2023-12-19 17:51:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:51:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904464184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:51:59,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:51:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 13 [2023-12-19 17:51:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335239171] [2023-12-19 17:51:59,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:51:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 17:51:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:51:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 17:51:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-19 17:51:59,113 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 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) [2023-12-19 17:51:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:51:59,261 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-12-19 17:51:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 17:51:59,262 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 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 9 [2023-12-19 17:51:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:51:59,262 INFO L225 Difference]: With dead ends: 32 [2023-12-19 17:51:59,263 INFO L226 Difference]: Without dead ends: 26 [2023-12-19 17:51:59,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-12-19 17:51:59,265 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:51:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:51:59,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-19 17:51:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 14. [2023-12-19 17:51:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:51:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-19 17:51:59,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-12-19 17:51:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:51:59,272 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-19 17:51:59,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 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) [2023-12-19 17:51:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-19 17:51:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-19 17:51:59,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:51:59,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:51:59,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 17:51:59,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:51:59,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:51:59,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:51:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2109462340, now seen corresponding path program 2 times [2023-12-19 17:51:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:51:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854546252] [2023-12-19 17:51:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:51:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:51:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:51:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:51:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:51:59,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854546252] [2023-12-19 17:51:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854546252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:51:59,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434861427] [2023-12-19 17:51:59,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:51:59,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:51:59,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:51:59,611 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) [2023-12-19 17:51:59,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 17:51:59,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:51:59,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:51:59,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 17:51:59,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:51:59,702 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 15 treesize of output 1 [2023-12-19 17:51:59,799 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-12-19 17:51:59,799 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 1 case distinctions, treesize of input 33 treesize of output 17 [2023-12-19 17:51:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:51:59,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:00,012 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 44 treesize of output 40 [2023-12-19 17:52:00,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:00,019 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 40 treesize of output 87 [2023-12-19 17:52:00,064 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2023-12-19 17:52:00,064 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 81 treesize of output 43 [2023-12-19 17:52:00,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:00,077 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 20 treesize of output 20 [2023-12-19 17:52:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434861427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:00,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2023-12-19 17:52:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103905739] [2023-12-19 17:52:00,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:00,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 17:52:00,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 17:52:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-19 17:52:00,138 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:00,453 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-12-19 17:52:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 17:52:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2023-12-19 17:52:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:00,454 INFO L225 Difference]: With dead ends: 43 [2023-12-19 17:52:00,454 INFO L226 Difference]: Without dead ends: 37 [2023-12-19 17:52:00,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 17:52:00,455 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:00,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 32 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:52:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-19 17:52:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 19. [2023-12-19 17:52:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-12-19 17:52:00,458 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2023-12-19 17:52:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:00,458 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-12-19 17:52:00,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-12-19 17:52:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 17:52:00,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:00,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:52:00,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 17:52:00,663 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,SelfDestructingSolverStorable3 [2023-12-19 17:52:00,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:00,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1708282014, now seen corresponding path program 1 times [2023-12-19 17:52:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492465816] [2023-12-19 17:52:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:52:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492465816] [2023-12-19 17:52:00,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492465816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527299944] [2023-12-19 17:52:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:00,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:00,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:00,745 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) [2023-12-19 17:52:00,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 17:52:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:00,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 17:52:00,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:00,825 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 19 treesize of output 1 [2023-12-19 17:52:00,927 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:52:00,927 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:52:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:01,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:01,273 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 44 treesize of output 40 [2023-12-19 17:52:01,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:01,280 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 40 treesize of output 87 [2023-12-19 17:52:01,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:01,309 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 62 treesize of output 56 [2023-12-19 17:52:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527299944] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:01,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 13] total 25 [2023-12-19 17:52:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941998139] [2023-12-19 17:52:01,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 17:52:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 17:52:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-19 17:52:01,416 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:01,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:01,968 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2023-12-19 17:52:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 17:52:01,969 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2023-12-19 17:52:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:01,969 INFO L225 Difference]: With dead ends: 46 [2023-12-19 17:52:01,969 INFO L226 Difference]: Without dead ends: 38 [2023-12-19 17:52:01,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 17:52:01,970 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:01,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 66 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:52:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-19 17:52:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2023-12-19 17:52:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 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) [2023-12-19 17:52:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-12-19 17:52:01,975 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2023-12-19 17:52:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:01,975 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-12-19 17:52:01,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-12-19 17:52:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 17:52:01,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:01,976 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-19 17:52:01,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 17:52:02,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:02,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:02,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -217094724, now seen corresponding path program 2 times [2023-12-19 17:52:02,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:02,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276647307] [2023-12-19 17:52:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 17:52:02,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276647307] [2023-12-19 17:52:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276647307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593711348] [2023-12-19 17:52:02,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:52:02,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:02,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:02,317 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) [2023-12-19 17:52:02,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 17:52:02,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:52:02,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:52:02,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 17:52:02,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:02,406 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 19 treesize of output 1 [2023-12-19 17:52:02,481 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:52:02,482 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:52:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:02,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:02,866 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 44 treesize of output 40 [2023-12-19 17:52:02,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:02,873 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 40 treesize of output 87 [2023-12-19 17:52:02,915 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-19 17:52:02,915 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 84 treesize of output 57 [2023-12-19 17:52:02,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:02,933 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 [2023-12-19 17:52:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593711348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:03,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 29 [2023-12-19 17:52:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332754778] [2023-12-19 17:52:03,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 17:52:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 17:52:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2023-12-19 17:52:03,076 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:03,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:03,684 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2023-12-19 17:52:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 17:52:03,684 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 0 states have call successors, (0), 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 24 [2023-12-19 17:52:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:03,684 INFO L225 Difference]: With dead ends: 55 [2023-12-19 17:52:03,684 INFO L226 Difference]: Without dead ends: 44 [2023-12-19 17:52:03,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=306, Invalid=1950, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 17:52:03,686 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:03,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 90 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:52:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-19 17:52:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2023-12-19 17:52:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-12-19 17:52:03,693 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2023-12-19 17:52:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:03,694 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-12-19 17:52:03,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-12-19 17:52:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-19 17:52:03,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:03,694 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2023-12-19 17:52:03,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 17:52:03,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:03,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:03,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -161709026, now seen corresponding path program 3 times [2023-12-19 17:52:03,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:03,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915833804] [2023-12-19 17:52:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:03,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 17:52:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:03,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915833804] [2023-12-19 17:52:03,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915833804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:03,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199897420] [2023-12-19 17:52:03,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:52:03,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:03,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:03,993 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) [2023-12-19 17:52:03,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 17:52:04,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-19 17:52:04,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:52:04,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 17:52:04,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:04,279 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 19 treesize of output 1 [2023-12-19 17:52:04,385 INFO L349 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2023-12-19 17:52:04,386 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 1 case distinctions, treesize of input 43 treesize of output 23 [2023-12-19 17:52:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:52:04,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:05,284 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 44 treesize of output 40 [2023-12-19 17:52:05,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:05,289 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 40 treesize of output 87 [2023-12-19 17:52:05,335 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-19 17:52:05,335 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 84 treesize of output 57 [2023-12-19 17:52:05,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:05,348 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 51 treesize of output 34 [2023-12-19 17:52:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:52:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199897420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:05,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:05,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18, 20] total 38 [2023-12-19 17:52:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041824254] [2023-12-19 17:52:05,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:05,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-19 17:52:05,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-19 17:52:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 17:52:05,586 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 39 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:07,011 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2023-12-19 17:52:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 17:52:07,012 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 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 30 [2023-12-19 17:52:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:07,012 INFO L225 Difference]: With dead ends: 64 [2023-12-19 17:52:07,012 INFO L226 Difference]: Without dead ends: 50 [2023-12-19 17:52:07,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=502, Invalid=3158, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 17:52:07,013 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:07,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 127 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:52:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-19 17:52:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2023-12-19 17:52:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 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) [2023-12-19 17:52:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2023-12-19 17:52:07,019 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2023-12-19 17:52:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:07,019 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2023-12-19 17:52:07,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2023-12-19 17:52:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-19 17:52:07,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:07,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 1, 1, 1, 1, 1] [2023-12-19 17:52:07,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 17:52:07,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:07,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:07,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1142600380, now seen corresponding path program 4 times [2023-12-19 17:52:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:07,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797042503] [2023-12-19 17:52:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 17:52:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797042503] [2023-12-19 17:52:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797042503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86350831] [2023-12-19 17:52:07,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:52:07,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:07,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:07,368 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) [2023-12-19 17:52:07,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 17:52:07,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:52:07,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:52:07,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 17:52:07,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:07,469 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 19 treesize of output 1 [2023-12-19 17:52:07,544 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:52:07,545 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:52:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:07,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:08,135 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 44 treesize of output 40 [2023-12-19 17:52:08,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:08,142 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 40 treesize of output 87 [2023-12-19 17:52:08,166 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-12-19 17:52:08,166 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 85 treesize of output 47 [2023-12-19 17:52:08,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:08,177 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 22 treesize of output 20 [2023-12-19 17:52:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:52:08,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86350831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:08,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:08,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 19] total 37 [2023-12-19 17:52:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312583171] [2023-12-19 17:52:08,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:08,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 17:52:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 17:52:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 17:52:08,425 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:09,251 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2023-12-19 17:52:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 17:52:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 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 36 [2023-12-19 17:52:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:09,252 INFO L225 Difference]: With dead ends: 73 [2023-12-19 17:52:09,252 INFO L226 Difference]: Without dead ends: 56 [2023-12-19 17:52:09,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=370, Invalid=2936, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 17:52:09,253 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:09,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 170 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:52:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-19 17:52:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2023-12-19 17:52:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2023-12-19 17:52:09,277 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2023-12-19 17:52:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:09,277 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2023-12-19 17:52:09,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2023-12-19 17:52:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-19 17:52:09,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:09,278 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-19 17:52:09,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 17:52:09,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:09,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:09,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1410852766, now seen corresponding path program 5 times [2023-12-19 17:52:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93015699] [2023-12-19 17:52:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-19 17:52:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93015699] [2023-12-19 17:52:09,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93015699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19616935] [2023-12-19 17:52:09,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:52:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:09,630 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) [2023-12-19 17:52:09,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 17:52:21,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-19 17:52:21,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:52:21,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-19 17:52:21,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:21,406 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 19 treesize of output 1 [2023-12-19 17:52:21,423 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 31 treesize of output 15 [2023-12-19 17:52:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:52:21,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:21,880 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 44 treesize of output 40 [2023-12-19 17:52:21,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:21,890 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 40 treesize of output 87 [2023-12-19 17:52:21,931 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-19 17:52:21,931 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 117 treesize of output 90 [2023-12-19 17:52:22,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:22,006 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 148 treesize of output 123 [2023-12-19 17:52:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:52:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19616935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:22,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 37 [2023-12-19 17:52:22,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115049130] [2023-12-19 17:52:22,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 17:52:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 17:52:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 17:52:22,419 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 38 states, 38 states have (on average 2.473684210526316) internal successors, (94), 37 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:23,268 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2023-12-19 17:52:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-19 17:52:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.473684210526316) internal successors, (94), 37 states have internal predecessors, (94), 0 states have call successors, (0), 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 42 [2023-12-19 17:52:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:23,269 INFO L225 Difference]: With dead ends: 121 [2023-12-19 17:52:23,269 INFO L226 Difference]: Without dead ends: 101 [2023-12-19 17:52:23,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=352, Invalid=3070, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 17:52:23,271 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 102 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:23,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 345 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:52:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-19 17:52:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 53. [2023-12-19 17:52:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-12-19 17:52:23,279 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 42 [2023-12-19 17:52:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:23,279 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-12-19 17:52:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.473684210526316) internal successors, (94), 37 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-12-19 17:52:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-19 17:52:23,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:23,280 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1] [2023-12-19 17:52:23,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 17:52:23,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:23,486 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:23,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1797124164, now seen corresponding path program 6 times [2023-12-19 17:52:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168326677] [2023-12-19 17:52:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-19 17:52:23,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168326677] [2023-12-19 17:52:23,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168326677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826088319] [2023-12-19 17:52:23,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:52:23,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:23,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:23,682 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) [2023-12-19 17:52:23,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 17:52:24,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-19 17:52:24,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:52:24,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-19 17:52:24,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:24,505 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 19 treesize of output 1 [2023-12-19 17:52:24,610 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 31 treesize of output 15 [2023-12-19 17:52:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-19 17:52:24,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:52:25,120 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 44 treesize of output 40 [2023-12-19 17:52:25,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:25,177 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 40 treesize of output 87 [2023-12-19 17:52:25,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:52:25,230 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 41 treesize of output 28 [2023-12-19 17:52:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:52:25,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826088319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:52:25,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:52:25,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 24] total 40 [2023-12-19 17:52:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491660704] [2023-12-19 17:52:25,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:52:25,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-19 17:52:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:52:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-19 17:52:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1317, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 17:52:25,815 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:52:52,098 INFO L93 Difference]: Finished difference Result 235 states and 247 transitions. [2023-12-19 17:52:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 17:52:52,098 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-19 17:52:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:52:52,100 INFO L225 Difference]: With dead ends: 235 [2023-12-19 17:52:52,100 INFO L226 Difference]: Without dead ends: 212 [2023-12-19 17:52:52,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=2369, Invalid=8137, Unknown=0, NotChecked=0, Total=10506 [2023-12-19 17:52:52,102 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 951 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:52:52,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 445 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 17:52:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-19 17:52:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 94. [2023-12-19 17:52:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 93 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2023-12-19 17:52:52,119 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 48 [2023-12-19 17:52:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:52:52,119 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2023-12-19 17:52:52,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:52:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2023-12-19 17:52:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-19 17:52:52,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:52:52,120 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-19 17:52:52,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 17:52:52,328 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,SelfDestructingSolverStorable9 [2023-12-19 17:52:52,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:52:52,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:52:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash -263908930, now seen corresponding path program 7 times [2023-12-19 17:52:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:52:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352117247] [2023-12-19 17:52:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:52:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:52:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-19 17:52:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:52:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352117247] [2023-12-19 17:52:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352117247] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:52:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755127495] [2023-12-19 17:52:52,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:52:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:52:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:52:52,500 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) [2023-12-19 17:52:52,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 17:52:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:52:52,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-19 17:52:52,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:52:52,648 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 19 treesize of output 1 [2023-12-19 17:52:52,739 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:52:52,739 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:52:52,778 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:52:52,779 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:52:56,295 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:52:56,295 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:53:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 6 proven. 145 refuted. 1 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 17:53:00,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:53:01,389 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 44 treesize of output 40 [2023-12-19 17:53:01,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:53:01,395 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 40 treesize of output 87 [2023-12-19 17:53:01,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:53:01,417 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 62 treesize of output 56 [2023-12-19 17:53:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 17:53:01,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755127495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:53:01,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:53:01,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 21] total 46 [2023-12-19 17:53:01,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692152416] [2023-12-19 17:53:01,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:53:01,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-19 17:53:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:53:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-19 17:53:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1956, Unknown=11, NotChecked=0, Total=2162 [2023-12-19 17:53:01,732 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 46 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:53:11,872 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2023-12-19 17:53:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 17:53:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 46 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-19 17:53:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:53:11,872 INFO L225 Difference]: With dead ends: 147 [2023-12-19 17:53:11,873 INFO L226 Difference]: Without dead ends: 121 [2023-12-19 17:53:11,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=671, Invalid=6281, Unknown=20, NotChecked=0, Total=6972 [2023-12-19 17:53:11,874 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 96 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 17:53:11,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 516 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 17:53:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-19 17:53:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 83. [2023-12-19 17:53:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 82 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2023-12-19 17:53:11,890 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 48 [2023-12-19 17:53:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:53:11,890 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2023-12-19 17:53:11,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 46 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2023-12-19 17:53:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 17:53:11,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:53:11,891 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 7, 7, 1, 1, 1, 1, 1] [2023-12-19 17:53:11,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 17:53:12,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:53:12,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:53:12,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:53:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash 193194265, now seen corresponding path program 8 times [2023-12-19 17:53:12,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:53:12,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546397416] [2023-12-19 17:53:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:53:12,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:53:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:53:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-19 17:53:12,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:53:12,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546397416] [2023-12-19 17:53:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546397416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:53:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906905421] [2023-12-19 17:53:12,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:53:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:53:12,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:53:12,327 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) [2023-12-19 17:53:12,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 17:53:12,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:53:12,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:53:12,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-19 17:53:12,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:53:12,472 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 19 treesize of output 1 [2023-12-19 17:53:12,565 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:12,565 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:12,615 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:12,615 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:15,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:53:15,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 68 treesize of output 44 [2023-12-19 17:53:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 2 proven. 217 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:53:15,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:53:16,145 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 44 treesize of output 40 [2023-12-19 17:53:16,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:53:16,153 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 40 treesize of output 87 [2023-12-19 17:53:16,181 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-19 17:53:16,181 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 84 treesize of output 57 [2023-12-19 17:53:16,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:53:16,203 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 51 treesize of output 34 [2023-12-19 17:53:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 17:53:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906905421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:53:16,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:53:16,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 25, 25] total 51 [2023-12-19 17:53:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354846844] [2023-12-19 17:53:16,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:53:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-19 17:53:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:53:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-19 17:53:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2428, Unknown=3, NotChecked=0, Total=2652 [2023-12-19 17:53:16,640 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 52 states, 52 states have (on average 2.3653846153846154) internal successors, (123), 51 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:53:18,668 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2023-12-19 17:53:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-19 17:53:18,669 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.3653846153846154) internal successors, (123), 51 states have internal predecessors, (123), 0 states have call successors, (0), 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 57 [2023-12-19 17:53:18,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:53:18,669 INFO L225 Difference]: With dead ends: 150 [2023-12-19 17:53:18,670 INFO L226 Difference]: Without dead ends: 124 [2023-12-19 17:53:18,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=579, Invalid=5898, Unknown=3, NotChecked=0, Total=6480 [2023-12-19 17:53:18,671 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 17:53:18,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 552 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 17:53:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-19 17:53:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2023-12-19 17:53:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0952380952380953) internal successors, (115), 105 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2023-12-19 17:53:18,697 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 57 [2023-12-19 17:53:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:53:18,697 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2023-12-19 17:53:18,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.3653846153846154) internal successors, (123), 51 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2023-12-19 17:53:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 17:53:18,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:53:18,698 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 8, 8, 1, 1, 1, 1, 1] [2023-12-19 17:53:18,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 17:53:18,903 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,SelfDestructingSolverStorable11 [2023-12-19 17:53:18,903 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:53:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:53:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -722255241, now seen corresponding path program 9 times [2023-12-19 17:53:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:53:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733818537] [2023-12-19 17:53:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:53:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:53:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:53:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-19 17:53:19,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:53:19,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733818537] [2023-12-19 17:53:19,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733818537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:53:19,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063627878] [2023-12-19 17:53:19,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:53:19,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:53:19,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:53:19,153 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) [2023-12-19 17:53:19,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 17:53:32,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-19 17:53:32,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:53:32,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 17:53:32,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:53:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-19 17:53:32,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:53:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 17:53:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063627878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:53:33,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:53:33,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 34 [2023-12-19 17:53:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561910037] [2023-12-19 17:53:33,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:53:33,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 17:53:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:53:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 17:53:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=913, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 17:53:33,062 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 35 states, 35 states have (on average 2.8) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:53:38,402 INFO L93 Difference]: Finished difference Result 232 states and 247 transitions. [2023-12-19 17:53:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 17:53:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 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 63 [2023-12-19 17:53:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:53:38,404 INFO L225 Difference]: With dead ends: 232 [2023-12-19 17:53:38,404 INFO L226 Difference]: Without dead ends: 182 [2023-12-19 17:53:38,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=581, Invalid=1489, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 17:53:38,405 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 504 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:53:38,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 700 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 17:53:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-19 17:53:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 103. [2023-12-19 17:53:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2023-12-19 17:53:38,425 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 63 [2023-12-19 17:53:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:53:38,426 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2023-12-19 17:53:38,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:53:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2023-12-19 17:53:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 17:53:38,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:53:38,427 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 7, 6, 6, 1, 1, 1, 1, 1] [2023-12-19 17:53:38,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 17:53:38,630 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,SelfDestructingSolverStorable12 [2023-12-19 17:53:38,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:53:38,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:53:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash 699400380, now seen corresponding path program 10 times [2023-12-19 17:53:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:53:38,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942667880] [2023-12-19 17:53:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:53:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:53:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:53:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-19 17:53:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:53:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942667880] [2023-12-19 17:53:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942667880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:53:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250281718] [2023-12-19 17:53:39,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:53:39,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:53:39,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:53:39,264 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) [2023-12-19 17:53:39,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 17:53:39,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:53:39,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:53:39,423 WARN L260 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 222 conjunts are in the unsatisfiable core [2023-12-19 17:53:39,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:53:39,509 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 19 treesize of output 1 [2023-12-19 17:53:39,630 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:39,630 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:45,483 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:53:45,483 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:53:48,694 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:53:48,694 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:53:49,277 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:49,277 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:49,314 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:49,315 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:52,015 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:53:52,016 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:53:52,227 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:52,227 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:52,294 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:52,294 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:52,364 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:52,365 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:52,411 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:52,412 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:52,447 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:53:52,447 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:53:55,054 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:53:55,055 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:53:59,192 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:53:59,193 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:54:01,397 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:54:01,398 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:54:03,543 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:54:03,544 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:54:03,784 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-12-19 17:54:03,785 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-19 17:54:06,124 INFO L349 Elim1Store]: treesize reduction 46, result has 44.6 percent of original size [2023-12-19 17:54:06,124 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 3 case distinctions, treesize of input 60 treesize of output 53 [2023-12-19 17:54:10,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:54:10,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 68 treesize of output 44 [2023-12-19 17:54:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 147 proven. 484 refuted. 78 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-19 17:54:10,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:12,670 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 44 treesize of output 40 [2023-12-19 17:54:12,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:54:12,676 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 40 treesize of output 87 [2023-12-19 17:54:12,705 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-19 17:54:12,706 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 84 treesize of output 57 [2023-12-19 17:54:12,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:54:12,719 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 [2023-12-19 17:54:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-19 17:54:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250281718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:13,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 23] total 64 [2023-12-19 17:54:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661753329] [2023-12-19 17:54:13,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-19 17:54:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-19 17:54:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=3894, Unknown=5, NotChecked=0, Total=4160 [2023-12-19 17:54:13,216 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 65 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 64 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:21,295 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2023-12-19 17:54:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-19 17:54:21,295 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 64 states have internal predecessors, (160), 0 states have call successors, (0), 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 96 [2023-12-19 17:54:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:21,296 INFO L225 Difference]: With dead ends: 223 [2023-12-19 17:54:21,296 INFO L226 Difference]: Without dead ends: 194 [2023-12-19 17:54:21,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 124 SyntacticMatches, 29 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7379 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=1578, Invalid=25807, Unknown=5, NotChecked=0, Total=27390 [2023-12-19 17:54:21,300 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 311 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 5094 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:21,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 2445 Invalid, 5198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5094 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 17:54:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-19 17:54:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 106. [2023-12-19 17:54:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2023-12-19 17:54:21,322 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 96 [2023-12-19 17:54:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:21,322 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2023-12-19 17:54:21,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 64 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2023-12-19 17:54:21,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 17:54:21,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:21,323 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 8, 8, 1, 1, 1, 1, 1] [2023-12-19 17:54:21,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:21,527 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,SelfDestructingSolverStorable13 [2023-12-19 17:54:21,527 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:21,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1970216855, now seen corresponding path program 11 times [2023-12-19 17:54:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:21,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155143872] [2023-12-19 17:54:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-19 17:54:22,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:22,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155143872] [2023-12-19 17:54:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155143872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:22,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46718368] [2023-12-19 17:54:22,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:54:22,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:22,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:22,292 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) [2023-12-19 17:54:22,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 18:06:36,293 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:06:36,294 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 [2023-12-19 18:06:37,311 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 0 [2023-12-19 18:06:37,494 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-19 18:06:37,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:06:37,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 18:06:37,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-12-19 18:06:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764086980] [2023-12-19 18:06:37,511 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 18:06:37,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 18:06:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:06:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 18:06:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2023-12-19 18:06:37,512 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 18:06:37,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2023-12-19 18:06:37,514 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:06:37,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:06:37,515 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:06:37,515 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-19 18:06:37,515 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,SelfDestructingSolverStorable14 [2023-12-19 18:06:37,516 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (106states) and FLOYD_HOARE automaton (currently 2 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-19 18:06:37,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-19 18:06:37,524 INFO L445 BasicCegarLoop]: Path program histogram: [11, 2, 1, 1] [2023-12-19 18:06:37,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:06:37,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:06:37 BoogieIcfgContainer [2023-12-19 18:06:37,526 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:06:37,527 INFO L158 Benchmark]: Toolchain (without parser) took 879803.49ms. Allocated memory was 199.2MB in the beginning and 346.0MB in the end (delta: 146.8MB). Free memory was 145.5MB in the beginning and 274.5MB in the end (delta: -129.0MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2023-12-19 18:06:37,527 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:06:37,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.07ms. Allocated memory is still 199.2MB. Free memory was 145.0MB in the beginning and 134.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:06:37,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.19ms. Allocated memory is still 199.2MB. Free memory was 134.1MB in the beginning and 132.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:06:37,527 INFO L158 Benchmark]: Boogie Preprocessor took 21.29ms. Allocated memory is still 199.2MB. Free memory was 132.8MB in the beginning and 131.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:06:37,527 INFO L158 Benchmark]: RCFGBuilder took 197.02ms. Allocated memory is still 199.2MB. Free memory was 131.0MB in the beginning and 119.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 18:06:37,527 INFO L158 Benchmark]: TraceAbstraction took 879393.85ms. Allocated memory was 199.2MB in the beginning and 346.0MB in the end (delta: 146.8MB). Free memory was 119.2MB in the beginning and 274.5MB in the end (delta: -155.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:06:37,528 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.07ms. Allocated memory is still 199.2MB. Free memory was 145.0MB in the beginning and 134.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.19ms. Allocated memory is still 199.2MB. Free memory was 134.1MB in the beginning and 132.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.29ms. Allocated memory is still 199.2MB. Free memory was 132.8MB in the beginning and 131.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 197.02ms. Allocated memory is still 199.2MB. Free memory was 131.0MB in the beginning and 119.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 879393.85ms. Allocated memory was 199.2MB in the beginning and 346.0MB in the end (delta: 146.8MB). Free memory was 119.2MB in the beginning and 274.5MB in the end (delta: -155.3MB). There was no memory consumed. 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: 26]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 26). Cancelled while NwaCegarLoop was constructing difference of abstraction (106states) and FLOYD_HOARE automaton (currently 2 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.4s, OverallIterations: 15, TraceHistogramMax: 25, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 56.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2412 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2412 mSDsluCounter, 5548 SdHoareTripleChecker+Invalid, 8.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5310 mSDsCounter, 872 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12420 IncrementalHoareTripleChecker+Invalid, 13292 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 872 mSolverCounterUnsat, 238 mSDtfsCounter, 12420 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1445 GetRequests, 591 SyntacticMatches, 49 SemanticMatches, 805 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17156 ImplicationChecksByTransitivity, 94.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=12, InterpolantAutomatonStates: 535, 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, 478 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 25.8s SatisfiabilityAnalysisTime, 58.1s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1527 ConstructedInterpolants, 87 QuantifiedInterpolants, 18405 SizeOfPredicates, 262 NumberOfNonLiveVariables, 2078 ConjunctsInSsa, 787 ConjunctsInUnsatCore, 39 InterpolantComputations, 2 PerfectInterpolantSequences, 1541/7022 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