/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:49:36,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:49:37,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:49:37,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:49:37,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:49:37,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:49:37,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:49:37,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:49:37,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:49:37,060 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:49:37,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:49:37,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:49:37,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:49:37,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:49:37,061 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:49:37,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:49:37,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:49:37,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:49:37,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:49:37,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:49:37,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:49:37,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:49:37,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:49:37,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:49:37,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:49:37,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:49:37,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:49:37,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:49:37,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:49:37,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:49:37,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:49:37,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:49:37,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:49:37,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:49:37,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:49:37,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:49:37,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:49:37,074 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:49:37,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:49:37,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:49:37,074 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:49:37,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:49:37,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:49:37,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:49:37,238 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:49:37,238 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:49:37,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c [2023-12-16 19:49:38,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:49:38,544 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:49:38,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c [2023-12-16 19:49:38,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e329f6be/176f0db7d76e42ad85b5e714a976dedd/FLAGfff8fc385 [2023-12-16 19:49:38,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e329f6be/176f0db7d76e42ad85b5e714a976dedd [2023-12-16 19:49:38,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:49:38,567 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:49:38,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:49:38,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:49:38,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:49:38,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8d73a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38, skipping insertion in model container [2023-12-16 19:49:38,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,595 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:49:38,717 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2023-12-16 19:49:38,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:49:38,763 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:49:38,772 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2023-12-16 19:49:38,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:49:38,804 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:49:38,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38 WrapperNode [2023-12-16 19:49:38,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:49:38,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:49:38,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:49:38,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:49:38,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,841 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-12-16 19:49:38,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:49:38,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:49:38,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:49:38,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:49:38,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,888 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 19:49:38,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:49:38,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:49:38,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:49:38,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:49:38,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (1/1) ... [2023-12-16 19:49:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:49:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:49:38,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 19:49:39,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 19:49:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:49:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:49:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:49:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:49:39,058 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:49:39,060 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:49:39,290 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:49:39,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:49:39,305 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:49:39,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:49:39 BoogieIcfgContainer [2023-12-16 19:49:39,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:49:39,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:49:39,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:49:39,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:49:39,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:49:38" (1/3) ... [2023-12-16 19:49:39,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3661b8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:49:39, skipping insertion in model container [2023-12-16 19:49:39,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:49:38" (2/3) ... [2023-12-16 19:49:39,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3661b8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:49:39, skipping insertion in model container [2023-12-16 19:49:39,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:49:39" (3/3) ... [2023-12-16 19:49:39,311 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2023-12-16 19:49:39,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:49:39,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:49:39,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:49:39,384 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;@5ad63340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:49:39,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:49:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 19:49:39,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:39,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:39,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:39,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1330555956, now seen corresponding path program 1 times [2023-12-16 19:49:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119265631] [2023-12-16 19:49:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:39,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119265631] [2023-12-16 19:49:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119265631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:49:39,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:49:39,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:49:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439162839] [2023-12-16 19:49:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:49:39,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:49:39,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:49:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:49:39,913 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:39,983 INFO L93 Difference]: Finished difference Result 46 states and 74 transitions. [2023-12-16 19:49:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:49:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 19:49:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:39,990 INFO L225 Difference]: With dead ends: 46 [2023-12-16 19:49:39,990 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 19:49:39,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:49:39,995 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:39,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 62 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:49:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 19:49:40,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2023-12-16 19:49:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 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) [2023-12-16 19:49:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2023-12-16 19:49:40,020 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 10 [2023-12-16 19:49:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:40,020 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2023-12-16 19:49:40,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2023-12-16 19:49:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 19:49:40,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:40,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:40,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:49:40,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:40,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:40,022 INFO L85 PathProgramCache]: Analyzing trace with hash 691856621, now seen corresponding path program 1 times [2023-12-16 19:49:40,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226390824] [2023-12-16 19:49:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:40,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:40,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:40,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226390824] [2023-12-16 19:49:40,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226390824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:49:40,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802800890] [2023-12-16 19:49:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:40,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:40,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:49:40,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:49:40,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:49:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:40,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-16 19:49:40,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:49:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:40,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:49:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:40,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802800890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:49:40,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:49:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 8] total 18 [2023-12-16 19:49:40,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455527340] [2023-12-16 19:49:40,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:49:40,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 19:49:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:40,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 19:49:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-12-16 19:49:40,825 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:40,975 INFO L93 Difference]: Finished difference Result 59 states and 84 transitions. [2023-12-16 19:49:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:49:40,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-16 19:49:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:40,977 INFO L225 Difference]: With dead ends: 59 [2023-12-16 19:49:40,977 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 19:49:40,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2023-12-16 19:49:40,978 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 135 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:40,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 157 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:49:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 19:49:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 27. [2023-12-16 19:49:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2023-12-16 19:49:40,982 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 19 [2023-12-16 19:49:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:40,982 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2023-12-16 19:49:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2023-12-16 19:49:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 19:49:40,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:40,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:41,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 19:49:41,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:41,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:41,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1843775875, now seen corresponding path program 1 times [2023-12-16 19:49:41,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:41,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367105385] [2023-12-16 19:49:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:41,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:41,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367105385] [2023-12-16 19:49:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367105385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:49:41,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:49:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:49:41,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700313172] [2023-12-16 19:49:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:49:41,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:49:41,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:41,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:49:41,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:49:41,453 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 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) [2023-12-16 19:49:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:41,628 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2023-12-16 19:49:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 19:49:41,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 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) Word has length 20 [2023-12-16 19:49:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:41,630 INFO L225 Difference]: With dead ends: 76 [2023-12-16 19:49:41,630 INFO L226 Difference]: Without dead ends: 53 [2023-12-16 19:49:41,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:49:41,631 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 92 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:41,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 55 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:49:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-16 19:49:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2023-12-16 19:49:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2023-12-16 19:49:41,635 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 20 [2023-12-16 19:49:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:41,635 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2023-12-16 19:49:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 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) [2023-12-16 19:49:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2023-12-16 19:49:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 19:49:41,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:41,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:49:41,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:41,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash -212430927, now seen corresponding path program 1 times [2023-12-16 19:49:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708990418] [2023-12-16 19:49:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708990418] [2023-12-16 19:49:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708990418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:49:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:49:41,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:49:41,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108505074] [2023-12-16 19:49:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:49:41,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:49:41,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:49:41,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:49:41,963 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:42,083 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2023-12-16 19:49:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:49:42,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 19:49:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:42,084 INFO L225 Difference]: With dead ends: 81 [2023-12-16 19:49:42,084 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 19:49:42,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:49:42,085 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:42,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 54 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:49:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 19:49:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2023-12-16 19:49:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2023-12-16 19:49:42,090 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 21 [2023-12-16 19:49:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:42,091 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2023-12-16 19:49:42,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2023-12-16 19:49:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 19:49:42,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:42,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:42,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:49:42,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:42,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash 467627443, now seen corresponding path program 1 times [2023-12-16 19:49:42,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:42,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404116944] [2023-12-16 19:49:42,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:42,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:42,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:42,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404116944] [2023-12-16 19:49:42,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404116944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:49:42,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703908908] [2023-12-16 19:49:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:42,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:42,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:49:42,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:49:42,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:49:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:42,697 WARN L260 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-16 19:49:42,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:49:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:43,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:49:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:44,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703908908] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:49:44,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:49:44,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 33 [2023-12-16 19:49:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093447835] [2023-12-16 19:49:44,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:49:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 19:49:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 19:49:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 19:49:44,046 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:46,071 INFO L93 Difference]: Finished difference Result 127 states and 176 transitions. [2023-12-16 19:49:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-16 19:49:46,072 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 19:49:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:46,072 INFO L225 Difference]: With dead ends: 127 [2023-12-16 19:49:46,072 INFO L226 Difference]: Without dead ends: 104 [2023-12-16 19:49:46,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1061, Invalid=3769, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 19:49:46,074 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 366 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:46,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 146 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 19:49:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-16 19:49:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2023-12-16 19:49:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2023-12-16 19:49:46,079 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 21 [2023-12-16 19:49:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:46,079 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2023-12-16 19:49:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2023-12-16 19:49:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 19:49:46,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:46,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:46,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 19:49:46,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:46,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:46,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1825005759, now seen corresponding path program 1 times [2023-12-16 19:49:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718527702] [2023-12-16 19:49:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:46,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 19:49:46,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:46,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718527702] [2023-12-16 19:49:46,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718527702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:49:46,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:49:46,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 19:49:46,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703361720] [2023-12-16 19:49:46,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:49:46,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:49:46,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:46,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:49:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:49:46,734 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:46,887 INFO L93 Difference]: Finished difference Result 127 states and 177 transitions. [2023-12-16 19:49:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:49:46,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 39 [2023-12-16 19:49:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:46,888 INFO L225 Difference]: With dead ends: 127 [2023-12-16 19:49:46,888 INFO L226 Difference]: Without dead ends: 90 [2023-12-16 19:49:46,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:49:46,889 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:46,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 191 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:49:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-16 19:49:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 64. [2023-12-16 19:49:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 91 transitions. [2023-12-16 19:49:46,893 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 91 transitions. Word has length 39 [2023-12-16 19:49:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 91 transitions. [2023-12-16 19:49:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 91 transitions. [2023-12-16 19:49:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 19:49:46,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:46,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:49:46,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:46,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:46,895 INFO L85 PathProgramCache]: Analyzing trace with hash 53795391, now seen corresponding path program 1 times [2023-12-16 19:49:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820003541] [2023-12-16 19:49:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:49:47,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820003541] [2023-12-16 19:49:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820003541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:49:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467851098] [2023-12-16 19:49:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:47,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:49:47,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:49:47,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:49:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:47,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-16 19:49:47,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:49:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 19:49:47,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:49:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 19:49:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467851098] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:49:47,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:49:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 13] total 26 [2023-12-16 19:49:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626366887] [2023-12-16 19:49:47,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:49:47,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 19:49:47,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 19:49:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-16 19:49:47,678 INFO L87 Difference]: Start difference. First operand 64 states and 91 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:47,995 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2023-12-16 19:49:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 19:49:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 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 40 [2023-12-16 19:49:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:47,997 INFO L225 Difference]: With dead ends: 198 [2023-12-16 19:49:47,997 INFO L226 Difference]: Without dead ends: 151 [2023-12-16 19:49:47,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=418, Invalid=1222, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 19:49:47,998 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 128 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:47,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 120 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:49:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-16 19:49:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 64. [2023-12-16 19:49:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 91 transitions. [2023-12-16 19:49:48,002 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 91 transitions. Word has length 40 [2023-12-16 19:49:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:48,003 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 91 transitions. [2023-12-16 19:49:48,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 91 transitions. [2023-12-16 19:49:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 19:49:48,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:48,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:48,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 19:49:48,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:48,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:48,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash -80218115, now seen corresponding path program 1 times [2023-12-16 19:49:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:48,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794032468] [2023-12-16 19:49:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:48,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 19:49:48,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:48,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794032468] [2023-12-16 19:49:48,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794032468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:49:48,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955956634] [2023-12-16 19:49:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:48,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:48,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:49:48,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:49:48,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:49:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:48,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-16 19:49:48,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:49:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:49,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:49:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 19:49:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955956634] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:49:49,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:49:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17, 11] total 33 [2023-12-16 19:49:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501882343] [2023-12-16 19:49:49,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:49:49,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 19:49:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 19:49:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 19:49:49,774 INFO L87 Difference]: Start difference. First operand 64 states and 91 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:49:51,116 INFO L93 Difference]: Finished difference Result 201 states and 264 transitions. [2023-12-16 19:49:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 19:49:51,117 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 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 40 [2023-12-16 19:49:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:49:51,117 INFO L225 Difference]: With dead ends: 201 [2023-12-16 19:49:51,117 INFO L226 Difference]: Without dead ends: 158 [2023-12-16 19:49:51,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=976, Invalid=3446, Unknown=0, NotChecked=0, Total=4422 [2023-12-16 19:49:51,119 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 328 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:49:51,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 58 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 19:49:51,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-16 19:49:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 73. [2023-12-16 19:49:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 72 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2023-12-16 19:49:51,123 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 40 [2023-12-16 19:49:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:49:51,124 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2023-12-16 19:49:51,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:49:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2023-12-16 19:49:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 19:49:51,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:49:51,124 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:49:51,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 19:49:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:51,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:49:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:49:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 431220773, now seen corresponding path program 1 times [2023-12-16 19:49:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:49:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319918266] [2023-12-16 19:49:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:49:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:49:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:49:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319918266] [2023-12-16 19:49:52,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319918266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:49:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323563003] [2023-12-16 19:49:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:49:52,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:49:52,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:49:52,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:49:52,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 19:49:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:49:52,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-16 19:49:52,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:49:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 19:49:53,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:49:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 19:49:56,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323563003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:49:56,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:49:56,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 13] total 46 [2023-12-16 19:49:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736019935] [2023-12-16 19:49:56,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:49:56,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-16 19:49:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:49:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-16 19:49:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 19:49:56,252 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand has 47 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:50:03,297 INFO L93 Difference]: Finished difference Result 329 states and 437 transitions. [2023-12-16 19:50:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-16 19:50:03,297 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 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 40 [2023-12-16 19:50:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:50:03,298 INFO L225 Difference]: With dead ends: 329 [2023-12-16 19:50:03,298 INFO L226 Difference]: Without dead ends: 274 [2023-12-16 19:50:03,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4946 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=2716, Invalid=13286, Unknown=0, NotChecked=0, Total=16002 [2023-12-16 19:50:03,302 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1272 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:50:03,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 359 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:50:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-16 19:50:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 86. [2023-12-16 19:50:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 85 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 124 transitions. [2023-12-16 19:50:03,308 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 124 transitions. Word has length 40 [2023-12-16 19:50:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:50:03,308 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 124 transitions. [2023-12-16 19:50:03,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 124 transitions. [2023-12-16 19:50:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 19:50:03,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:50:03,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:50:03,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 19:50:03,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:03,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:50:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:50:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1986015435, now seen corresponding path program 1 times [2023-12-16 19:50:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:50:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973636406] [2023-12-16 19:50:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:50:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:50:04,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:50:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973636406] [2023-12-16 19:50:04,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973636406] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:50:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829497102] [2023-12-16 19:50:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:04,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:50:04,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:50:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 19:50:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:04,468 WARN L260 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 127 conjunts are in the unsatisfiable core [2023-12-16 19:50:04,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:50:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:50:05,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:50:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:50:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829497102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:50:07,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:50:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 20] total 52 [2023-12-16 19:50:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385146126] [2023-12-16 19:50:07,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:50:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-16 19:50:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:50:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-16 19:50:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=2321, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 19:50:07,033 INFO L87 Difference]: Start difference. First operand 86 states and 124 transitions. Second operand has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:09,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:50:09,819 INFO L93 Difference]: Finished difference Result 382 states and 512 transitions. [2023-12-16 19:50:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-16 19:50:09,819 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 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 41 [2023-12-16 19:50:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:50:09,820 INFO L225 Difference]: With dead ends: 382 [2023-12-16 19:50:09,820 INFO L226 Difference]: Without dead ends: 318 [2023-12-16 19:50:09,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4281 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2524, Invalid=10132, Unknown=0, NotChecked=0, Total=12656 [2023-12-16 19:50:09,823 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 739 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:50:09,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 73 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 19:50:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-16 19:50:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 129. [2023-12-16 19:50:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4296875) internal successors, (183), 128 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 183 transitions. [2023-12-16 19:50:09,847 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 183 transitions. Word has length 41 [2023-12-16 19:50:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:50:09,847 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 183 transitions. [2023-12-16 19:50:09,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 183 transitions. [2023-12-16 19:50:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 19:50:09,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:50:09,848 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 19:50:09,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 19:50:10,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:10,054 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:50:10,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:50:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash -36051247, now seen corresponding path program 1 times [2023-12-16 19:50:10,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:50:10,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949482081] [2023-12-16 19:50:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:50:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 53 proven. 61 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 19:50:12,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:50:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949482081] [2023-12-16 19:50:12,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949482081] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:50:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879375240] [2023-12-16 19:50:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:12,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:12,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:50:12,190 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:50:12,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 19:50:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:12,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 180 conjunts are in the unsatisfiable core [2023-12-16 19:50:12,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:50:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 19:50:13,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:50:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 39 proven. 61 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 19:50:15,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879375240] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:50:15,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:50:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 20] total 60 [2023-12-16 19:50:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625834960] [2023-12-16 19:50:15,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:50:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-16 19:50:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:50:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-16 19:50:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=3179, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 19:50:15,972 INFO L87 Difference]: Start difference. First operand 129 states and 183 transitions. Second operand has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:50:21,186 INFO L93 Difference]: Finished difference Result 629 states and 840 transitions. [2023-12-16 19:50:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-16 19:50:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 0 states have call successors, (0), 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 62 [2023-12-16 19:50:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:50:21,188 INFO L225 Difference]: With dead ends: 629 [2023-12-16 19:50:21,188 INFO L226 Difference]: Without dead ends: 504 [2023-12-16 19:50:21,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6828 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3146, Invalid=14676, Unknown=0, NotChecked=0, Total=17822 [2023-12-16 19:50:21,196 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 984 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 19:50:21,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 141 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 19:50:21,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-16 19:50:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 145. [2023-12-16 19:50:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4375) internal successors, (207), 144 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 207 transitions. [2023-12-16 19:50:21,214 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 207 transitions. Word has length 62 [2023-12-16 19:50:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:50:21,215 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 207 transitions. [2023-12-16 19:50:21,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 207 transitions. [2023-12-16 19:50:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 19:50:21,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:50:21,217 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:50:21,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 19:50:21,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:21,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:50:21,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:50:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1228748383, now seen corresponding path program 1 times [2023-12-16 19:50:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:50:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952086763] [2023-12-16 19:50:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:50:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 35 proven. 94 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 19:50:24,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:50:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952086763] [2023-12-16 19:50:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952086763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:50:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588499206] [2023-12-16 19:50:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:50:24,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:50:24,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 19:50:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:24,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-16 19:50:24,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:50:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 19:50:24,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:50:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 40 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-16 19:50:25,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588499206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:50:25,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:50:25,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14, 12] total 50 [2023-12-16 19:50:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162394019] [2023-12-16 19:50:25,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:50:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-16 19:50:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:50:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-16 19:50:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=2084, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 19:50:25,824 INFO L87 Difference]: Start difference. First operand 145 states and 207 transitions. Second operand has 51 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:50:31,576 INFO L93 Difference]: Finished difference Result 547 states and 719 transitions. [2023-12-16 19:50:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-16 19:50:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 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 64 [2023-12-16 19:50:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:50:31,578 INFO L225 Difference]: With dead ends: 547 [2023-12-16 19:50:31,578 INFO L226 Difference]: Without dead ends: 433 [2023-12-16 19:50:31,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 106 SyntacticMatches, 5 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10818 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5160, Invalid=25640, Unknown=0, NotChecked=0, Total=30800 [2023-12-16 19:50:31,584 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1250 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:50:31,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 55 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:50:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-16 19:50:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 141. [2023-12-16 19:50:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4357142857142857) internal successors, (201), 140 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 201 transitions. [2023-12-16 19:50:31,598 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 201 transitions. Word has length 64 [2023-12-16 19:50:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:50:31,598 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 201 transitions. [2023-12-16 19:50:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:50:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 201 transitions. [2023-12-16 19:50:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 19:50:31,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:50:31,599 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 19:50:31,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 19:50:31,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 19:50:31,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:50:31,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:50:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1499909305, now seen corresponding path program 2 times [2023-12-16 19:50:31,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:50:31,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295588299] [2023-12-16 19:50:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:50:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:50:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:50:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 35 proven. 97 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 19:50:34,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:50:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295588299] [2023-12-16 19:50:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295588299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:50:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70302807] [2023-12-16 19:50:34,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 19:50:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:50:34,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:50:34,481 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:50:34,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 19:50:34,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 19:50:34,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 19:50:34,675 WARN L260 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 209 conjunts are in the unsatisfiable core [2023-12-16 19:50:34,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 19:50:35,630 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:50:35,636 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:50:35,640 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:50:35,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 19:50:35,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 19:50:35,837 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 65 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. [2023-12-16 19:50:35,842 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:50:35,844 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:50:35,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:50:35 BoogieIcfgContainer [2023-12-16 19:50:35,845 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:50:35,846 INFO L158 Benchmark]: Toolchain (without parser) took 57278.39ms. Allocated memory was 173.0MB in the beginning and 846.2MB in the end (delta: 673.2MB). Free memory was 123.4MB in the beginning and 540.5MB in the end (delta: -417.1MB). Peak memory consumption was 256.6MB. Max. memory is 8.0GB. [2023-12-16 19:50:35,846 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:50:35,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.54ms. Allocated memory is still 173.0MB. Free memory was 123.4MB in the beginning and 111.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 19:50:35,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.45ms. Allocated memory is still 173.0MB. Free memory was 111.8MB in the beginning and 109.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 19:50:35,847 INFO L158 Benchmark]: Boogie Preprocessor took 87.12ms. Allocated memory is still 173.0MB. Free memory was 109.0MB in the beginning and 106.6MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 19:50:35,847 INFO L158 Benchmark]: RCFGBuilder took 374.66ms. Allocated memory is still 173.0MB. Free memory was 106.6MB in the beginning and 90.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 19:50:35,847 INFO L158 Benchmark]: TraceAbstraction took 56538.78ms. Allocated memory was 173.0MB in the beginning and 846.2MB in the end (delta: 673.2MB). Free memory was 90.2MB in the beginning and 540.5MB in the end (delta: -450.3MB). Peak memory consumption was 224.1MB. Max. memory is 8.0GB. [2023-12-16 19:50:35,848 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 173.0MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.54ms. Allocated memory is still 173.0MB. Free memory was 123.4MB in the beginning and 111.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.45ms. Allocated memory is still 173.0MB. Free memory was 111.8MB in the beginning and 109.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 87.12ms. Allocated memory is still 173.0MB. Free memory was 109.0MB in the beginning and 106.6MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 374.66ms. Allocated memory is still 173.0MB. Free memory was 106.6MB in the beginning and 90.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 56538.78ms. Allocated memory was 173.0MB in the beginning and 846.2MB in the end (delta: 673.2MB). Free memory was 90.2MB in the beginning and 540.5MB in the end (delta: -450.3MB). Peak memory consumption was 224.1MB. 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: 22]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 22). Cancelled while NwaCegarLoop was analyzing trace of length 65 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.5s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5469 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5469 mSDsluCounter, 1471 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1307 mSDsCounter, 1044 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5215 IncrementalHoareTripleChecker+Invalid, 6259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1044 mSolverCounterUnsat, 164 mSDtfsCounter, 5215 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1260 GetRequests, 457 SyntacticMatches, 18 SemanticMatches, 785 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29989 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=11, InterpolantAutomatonStates: 505, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 1335 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1043 ConstructedInterpolants, 6 QuantifiedInterpolants, 21830 SizeOfPredicates, 296 NumberOfNonLiveVariables, 1982 ConjunctsInSsa, 705 ConjunctsInUnsatCore, 28 InterpolantComputations, 4 PerfectInterpolantSequences, 820/1441 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