/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 04:58:54,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 04:58:54,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 04:58:54,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 04:58:54,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 04:58:54,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 04:58:54,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 04:58:54,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 04:58:54,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 04:58:54,601 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 04:58:54,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 04:58:54,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 04:58:54,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 04:58:54,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 04:58:54,603 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 04:58:54,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 04:58:54,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 04:58:54,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 04:58:54,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 04:58:54,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 04:58:54,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 04:58:54,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 04:58:54,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 04:58:54,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 04:58:54,610 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 04:58:54,610 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 04:58:54,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 04:58:54,611 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 04:58:54,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 04:58:54,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 04:58:54,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 04:58:54,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 04:58:54,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:58:54,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 04:58:54,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 04:58:54,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 04:58:54,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 04:58:54,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 04:58:54,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 04:58:54,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 04:58:54,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 04:58:54,816 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 04:58:54,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c [2023-12-21 04:58:55,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 04:58:55,930 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 04:58:55,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c [2023-12-21 04:58:55,938 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d570d819/8120bc0b95b743f496484c8e19138a1c/FLAGe2292c93c [2023-12-21 04:58:55,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d570d819/8120bc0b95b743f496484c8e19138a1c [2023-12-21 04:58:55,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 04:58:55,955 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 04:58:55,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 04:58:55,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 04:58:55,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 04:58:55,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:58:55" (1/1) ... [2023-12-21 04:58:55,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f832fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:55, skipping insertion in model container [2023-12-21 04:58:55,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:58:55" (1/1) ... [2023-12-21 04:58:55,978 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 04:58:56,100 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c[319,332] [2023-12-21 04:58:56,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:58:56,124 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 04:58:56,132 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c[319,332] [2023-12-21 04:58:56,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:58:56,145 INFO L206 MainTranslator]: Completed translation [2023-12-21 04:58:56,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56 WrapperNode [2023-12-21 04:58:56,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 04:58:56,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 04:58:56,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 04:58:56,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 04:58:56,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,169 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2023-12-21 04:58:56,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 04:58:56,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 04:58:56,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 04:58:56,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 04:58:56,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,189 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]. [2023-12-21 04:58:56,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 04:58:56,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 04:58:56,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 04:58:56,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 04:58:56,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (1/1) ... [2023-12-21 04:58:56,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:58:56,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:56,231 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) [2023-12-21 04:58:56,252 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 [2023-12-21 04:58:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 04:58:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 04:58:56,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 04:58:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 04:58:56,310 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 04:58:56,312 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 04:58:56,403 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 04:58:56,418 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 04:58:56,418 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 04:58:56,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:58:56 BoogieIcfgContainer [2023-12-21 04:58:56,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 04:58:56,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 04:58:56,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 04:58:56,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 04:58:56,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:58:55" (1/3) ... [2023-12-21 04:58:56,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f90ef72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:58:56, skipping insertion in model container [2023-12-21 04:58:56,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:58:56" (2/3) ... [2023-12-21 04:58:56,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f90ef72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:58:56, skipping insertion in model container [2023-12-21 04:58:56,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:58:56" (3/3) ... [2023-12-21 04:58:56,424 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_13.c [2023-12-21 04:58:56,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 04:58:56,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 04:58:56,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 04:58:56,467 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;@33bfb8cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 04:58:56,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 04:58:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 04:58:56,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:56,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 04:58:56,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:56,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2043540179, now seen corresponding path program 1 times [2023-12-21 04:58:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472603407] [2023-12-21 04:58:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:58:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:56,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472603407] [2023-12-21 04:58:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472603407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:58:56,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:58:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:58:56,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269476059] [2023-12-21 04:58:56,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:58:56,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 04:58:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 04:58:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 04:58:56,621 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:56,638 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2023-12-21 04:58:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 04:58:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 04:58:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:56,644 INFO L225 Difference]: With dead ends: 17 [2023-12-21 04:58:56,644 INFO L226 Difference]: Without dead ends: 8 [2023-12-21 04:58:56,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 04:58:56,648 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:56,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-21 04:58:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-21 04:58:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-12-21 04:58:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-12-21 04:58:56,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-12-21 04:58:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:56,669 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-12-21 04:58:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-21 04:58:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 04:58:56,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:56,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 04:58:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 04:58:56,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2052775389, now seen corresponding path program 1 times [2023-12-21 04:58:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573188045] [2023-12-21 04:58:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:58:56,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:56,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573188045] [2023-12-21 04:58:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573188045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:58:56,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:58:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:58:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227810525] [2023-12-21 04:58:56,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:58:56,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:58:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:58:56,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:58:56,761 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:56,795 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-12-21 04:58:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:58:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 04:58:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:56,796 INFO L225 Difference]: With dead ends: 17 [2023-12-21 04:58:56,796 INFO L226 Difference]: Without dead ends: 10 [2023-12-21 04:58:56,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:58:56,797 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:56,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-21 04:58:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-21 04:58:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-21 04:58:56,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2023-12-21 04:58:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:56,800 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-21 04:58:56,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-21 04:58:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 04:58:56,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:56,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:58:56,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 04:58:56,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:56,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash 82784800, now seen corresponding path program 1 times [2023-12-21 04:58:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:56,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972082247] [2023-12-21 04:58:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:56,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972082247] [2023-12-21 04:58:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972082247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:58:56,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:58:56,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:58:56,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632251154] [2023-12-21 04:58:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:58:56,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:58:56,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:58:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:58:56,877 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:56,887 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-12-21 04:58:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:58:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 04:58:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:56,888 INFO L225 Difference]: With dead ends: 15 [2023-12-21 04:58:56,888 INFO L226 Difference]: Without dead ends: 11 [2023-12-21 04:58:56,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:58:56,889 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:56,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-21 04:58:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-21 04:58:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-21 04:58:56,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2023-12-21 04:58:56,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:56,891 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-21 04:58:56,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-21 04:58:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 04:58:56,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:56,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:58:56,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 04:58:56,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:56,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1726973108, now seen corresponding path program 1 times [2023-12-21 04:58:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:56,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019634776] [2023-12-21 04:58:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:56,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:56,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019634776] [2023-12-21 04:58:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019634776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:58:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288461731] [2023-12-21 04:58:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:56,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:56,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:56,969 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) [2023-12-21 04:58:56,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 04:58:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:57,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 04:58:57,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:58:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:57,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:58:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288461731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:58:57,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:58:57,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-21 04:58:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219015246] [2023-12-21 04:58:57,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:58:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 04:58:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 04:58:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:58:57,091 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:57,119 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-12-21 04:58:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 04:58:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 04:58:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:57,120 INFO L225 Difference]: With dead ends: 23 [2023-12-21 04:58:57,120 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 04:58:57,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:58:57,125 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:57,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 04:58:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-21 04:58:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-21 04:58:57,128 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2023-12-21 04:58:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:57,128 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-21 04:58:57,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-21 04:58:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 04:58:57,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:57,129 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:58:57,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 04:58:57,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:57,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:57,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1778849068, now seen corresponding path program 1 times [2023-12-21 04:58:57,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443963819] [2023-12-21 04:58:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:57,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:57,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443963819] [2023-12-21 04:58:57,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443963819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:58:57,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297347994] [2023-12-21 04:58:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:57,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:57,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:57,413 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) [2023-12-21 04:58:57,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 04:58:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:57,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 04:58:57,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:58:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:57,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:58:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297347994] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:58:57,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:58:57,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-21 04:58:57,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799702677] [2023-12-21 04:58:57,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:58:57,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 04:58:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 04:58:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-21 04:58:57,512 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:57,550 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2023-12-21 04:58:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 04:58:57,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 04:58:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:57,552 INFO L225 Difference]: With dead ends: 31 [2023-12-21 04:58:57,552 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 04:58:57,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-21 04:58:57,554 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:57,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 04:58:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 04:58:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-12-21 04:58:57,566 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2023-12-21 04:58:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:57,567 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-12-21 04:58:57,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-12-21 04:58:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 04:58:57,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:57,568 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:58:57,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 04:58:57,775 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 [2023-12-21 04:58:57,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:57,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash 712147936, now seen corresponding path program 2 times [2023-12-21 04:58:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:57,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509211847] [2023-12-21 04:58:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:57,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509211847] [2023-12-21 04:58:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509211847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:58:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874732730] [2023-12-21 04:58:57,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:58:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:57,966 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) [2023-12-21 04:58:57,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 04:58:58,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:58:58,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:58:58,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 04:58:58,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:58:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:58,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:58:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874732730] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:58:58,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:58:58,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-21 04:58:58,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809921747] [2023-12-21 04:58:58,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:58:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 04:58:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 04:58:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-12-21 04:58:58,181 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2023-12-21 04:58:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:58,225 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2023-12-21 04:58:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 04:58:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 04:58:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:58,226 INFO L225 Difference]: With dead ends: 47 [2023-12-21 04:58:58,226 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 04:58:58,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-12-21 04:58:58,229 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:58,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 04:58:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-21 04:58:58,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-12-21 04:58:58,237 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2023-12-21 04:58:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:58,237 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-12-21 04:58:58,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2023-12-21 04:58:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-12-21 04:58:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 04:58:58,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:58,238 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:58:58,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 04:58:58,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:58,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:58,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash -543796744, now seen corresponding path program 3 times [2023-12-21 04:58:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:58,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239477607] [2023-12-21 04:58:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:58:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239477607] [2023-12-21 04:58:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239477607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:58:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372337986] [2023-12-21 04:58:58,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:58:58,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:58,730 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) [2023-12-21 04:58:58,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 04:58:58,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:58:58,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 04:58:58,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 04:58:58,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:58:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-21 04:58:58,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:58:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-21 04:58:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372337986] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:58:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:58:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 4, 4] total 22 [2023-12-21 04:58:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883272139] [2023-12-21 04:58:58,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:58:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 04:58:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 04:58:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-21 04:58:58,967 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 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) [2023-12-21 04:58:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:58:59,204 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2023-12-21 04:58:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 04:58:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 04:58:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:58:59,205 INFO L225 Difference]: With dead ends: 55 [2023-12-21 04:58:59,206 INFO L226 Difference]: Without dead ends: 46 [2023-12-21 04:58:59,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=478, Invalid=928, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 04:58:59,207 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:58:59,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:58:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-21 04:58:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-12-21 04:58:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:58:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-12-21 04:58:59,217 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 37 [2023-12-21 04:58:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:58:59,217 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-12-21 04:58:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 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) [2023-12-21 04:58:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-12-21 04:58:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 04:58:59,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:58:59,219 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:58:59,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 04:58:59,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:59,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:58:59,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:58:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1699751973, now seen corresponding path program 4 times [2023-12-21 04:58:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:58:59,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177259561] [2023-12-21 04:58:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:58:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:58:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:58:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177259561] [2023-12-21 04:58:59,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177259561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:58:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875482637] [2023-12-21 04:58:59,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:58:59,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:59,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:59,742 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) [2023-12-21 04:58:59,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 04:58:59,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:58:59,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:58:59,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 04:58:59,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:58:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:58:59,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:59:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:59:00,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875482637] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:59:00,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:59:00,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-12-21 04:59:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455045641] [2023-12-21 04:59:00,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:59:00,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 04:59:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:59:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 04:59:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 04:59:00,196 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:59:00,274 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2023-12-21 04:59:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 04:59:00,275 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 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 43 [2023-12-21 04:59:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:59:00,276 INFO L225 Difference]: With dead ends: 91 [2023-12-21 04:59:00,276 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 04:59:00,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 04:59:00,278 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:59:00,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:59:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 04:59:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-21 04:59:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-12-21 04:59:00,299 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 43 [2023-12-21 04:59:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:59:00,299 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-12-21 04:59:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-12-21 04:59:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 04:59:00,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:59:00,301 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:59:00,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 04:59:00,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:00,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:59:00,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:59:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -304427474, now seen corresponding path program 5 times [2023-12-21 04:59:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:59:00,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340794740] [2023-12-21 04:59:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:59:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:59:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:59:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 33 proven. 1056 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:59:01,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:59:01,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340794740] [2023-12-21 04:59:01,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340794740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:59:01,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210141296] [2023-12-21 04:59:01,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:59:01,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:01,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:59:01,393 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) [2023-12-21 04:59:01,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 04:59:01,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2023-12-21 04:59:01,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:59:01,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 04:59:01,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:59:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 33 proven. 1056 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:59:01,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:59:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 33 proven. 1056 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:59:02,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210141296] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:59:02,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:59:02,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2023-12-21 04:59:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211683428] [2023-12-21 04:59:02,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:59:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 04:59:02,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:59:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 04:59:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 04:59:02,723 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:59:02,859 INFO L93 Difference]: Finished difference Result 159 states and 197 transitions. [2023-12-21 04:59:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 04:59:02,859 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 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 77 [2023-12-21 04:59:02,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:59:02,860 INFO L225 Difference]: With dead ends: 159 [2023-12-21 04:59:02,860 INFO L226 Difference]: Without dead ends: 146 [2023-12-21 04:59:02,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 04:59:02,862 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:59:02,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:59:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-21 04:59:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-21 04:59:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2023-12-21 04:59:02,871 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 77 [2023-12-21 04:59:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:59:02,871 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2023-12-21 04:59:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2023-12-21 04:59:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 04:59:02,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:59:02,872 INFO L195 NwaCegarLoop]: trace histogram [67, 66, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:59:02,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 04:59:03,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:03,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:59:03,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:59:03,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1836061548, now seen corresponding path program 6 times [2023-12-21 04:59:03,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:59:03,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938069683] [2023-12-21 04:59:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:59:03,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:59:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:59:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 67 proven. 4422 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 04:59:05,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:59:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938069683] [2023-12-21 04:59:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938069683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:59:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963533500] [2023-12-21 04:59:05,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:59:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:59:05,722 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) [2023-12-21 04:59:05,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 04:59:05,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 04:59:05,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:59:05,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 04:59:05,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:59:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 198 proven. 1 refuted. 0 times theorem prover too weak. 4305 trivial. 0 not checked. [2023-12-21 04:59:05,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:59:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 198 proven. 1 refuted. 0 times theorem prover too weak. 4305 trivial. 0 not checked. [2023-12-21 04:59:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963533500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:59:05,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:59:05,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 4, 4] total 73 [2023-12-21 04:59:05,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781700567] [2023-12-21 04:59:05,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:59:05,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 04:59:05,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:59:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 04:59:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 04:59:05,923 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand has 73 states, 73 states have (on average 2.0821917808219177) internal successors, (152), 73 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:59:06,090 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2023-12-21 04:59:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 04:59:06,090 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0821917808219177) internal successors, (152), 73 states have internal predecessors, (152), 0 states have call successors, (0), 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 145 [2023-12-21 04:59:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:59:06,093 INFO L225 Difference]: With dead ends: 167 [2023-12-21 04:59:06,093 INFO L226 Difference]: Without dead ends: 154 [2023-12-21 04:59:06,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 04:59:06,094 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:59:06,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:59:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-21 04:59:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-12-21 04:59:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0392156862745099) internal successors, (159), 153 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2023-12-21 04:59:06,119 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 145 [2023-12-21 04:59:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:59:06,119 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2023-12-21 04:59:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0821917808219177) internal successors, (152), 73 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2023-12-21 04:59:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 04:59:06,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:59:06,131 INFO L195 NwaCegarLoop]: trace histogram [71, 67, 5, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 04:59:06,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 04:59:06,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:06,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:59:06,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:59:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1206780634, now seen corresponding path program 7 times [2023-12-21 04:59:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:59:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589192247] [2023-12-21 04:59:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:59:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:59:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:59:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5056 backedges. 476 proven. 4556 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 04:59:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:59:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589192247] [2023-12-21 04:59:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589192247] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:59:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100107121] [2023-12-21 04:59:08,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:59:08,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:08,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:59:08,927 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) [2023-12-21 04:59:08,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 04:59:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:59:09,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-21 04:59:09,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:59:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5056 backedges. 476 proven. 4556 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 04:59:09,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:59:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5056 backedges. 476 proven. 4556 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 04:59:13,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100107121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:59:13,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:59:13,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 138 [2023-12-21 04:59:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131162477] [2023-12-21 04:59:13,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:59:13,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-12-21 04:59:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:59:13,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-12-21 04:59:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 04:59:13,573 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:13,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:59:13,919 INFO L93 Difference]: Finished difference Result 311 states and 390 transitions. [2023-12-21 04:59:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-21 04:59:13,920 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 0 states have call successors, (0), 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 153 [2023-12-21 04:59:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:59:13,920 INFO L225 Difference]: With dead ends: 311 [2023-12-21 04:59:13,921 INFO L226 Difference]: Without dead ends: 292 [2023-12-21 04:59:13,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 04:59:13,925 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:59:13,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:59:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-21 04:59:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2023-12-21 04:59:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.0206185567010309) internal successors, (297), 291 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 297 transitions. [2023-12-21 04:59:13,941 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 297 transitions. Word has length 153 [2023-12-21 04:59:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:59:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 297 transitions. [2023-12-21 04:59:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 297 transitions. [2023-12-21 04:59:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-21 04:59:13,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:59:13,945 INFO L195 NwaCegarLoop]: trace histogram [140, 136, 5, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 04:59:13,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 04:59:14,151 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,SelfDestructingSolverStorable10 [2023-12-21 04:59:14,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:59:14,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:59:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2035142955, now seen corresponding path program 8 times [2023-12-21 04:59:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:59:14,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316988798] [2023-12-21 04:59:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:59:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:59:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:59:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 19615 backedges. 959 proven. 18632 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 04:59:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:59:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316988798] [2023-12-21 04:59:25,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316988798] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:59:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485090412] [2023-12-21 04:59:25,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:59:25,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:59:25,772 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) [2023-12-21 04:59:25,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 04:59:25,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:59:25,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:59:25,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 274 conjunts are in the unsatisfiable core [2023-12-21 04:59:25,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:59:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 19615 backedges. 959 proven. 18632 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 04:59:26,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:59:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 19615 backedges. 959 proven. 18632 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 04:59:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485090412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:59:39,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:59:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138, 138] total 276 [2023-12-21 04:59:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452826081] [2023-12-21 04:59:39,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:59:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2023-12-21 04:59:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:59:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2023-12-21 04:59:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2023-12-21 04:59:39,646 INFO L87 Difference]: Start difference. First operand 292 states and 297 transitions. Second operand has 277 states, 277 states have (on average 2.0252707581227436) internal successors, (561), 276 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:59:40,708 INFO L93 Difference]: Finished difference Result 587 states and 735 transitions. [2023-12-21 04:59:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2023-12-21 04:59:40,709 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 2.0252707581227436) internal successors, (561), 276 states have internal predecessors, (561), 0 states have call successors, (0), 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 291 [2023-12-21 04:59:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:59:40,712 INFO L225 Difference]: With dead ends: 587 [2023-12-21 04:59:40,712 INFO L226 Difference]: Without dead ends: 568 [2023-12-21 04:59:40,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2023-12-21 04:59:40,716 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:59:40,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:59:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-21 04:59:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-12-21 04:59:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 1.0105820105820107) internal successors, (573), 567 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 573 transitions. [2023-12-21 04:59:40,739 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 573 transitions. Word has length 291 [2023-12-21 04:59:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:59:40,739 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 573 transitions. [2023-12-21 04:59:40,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 2.0252707581227436) internal successors, (561), 276 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:59:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 573 transitions. [2023-12-21 04:59:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-21 04:59:40,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:59:40,746 INFO L195 NwaCegarLoop]: trace histogram [278, 274, 5, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 04:59:40,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 04:59:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:59:40,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:59:40,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:59:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1607140851, now seen corresponding path program 9 times [2023-12-21 04:59:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:59:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391687408] [2023-12-21 04:59:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:59:40,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:59:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:00:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 77299 backedges. 1925 proven. 75350 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 05:00:36,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:00:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391687408] [2023-12-21 05:00:36,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391687408] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:00:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173346578] [2023-12-21 05:00:37,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:00:37,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:00:37,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:00:37,001 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:00:37,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 05:00:37,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-21 05:00:37,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:00:37,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:00:37,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:00:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 77299 backedges. 1934 proven. 15 refuted. 0 times theorem prover too weak. 75350 trivial. 0 not checked. [2023-12-21 05:00:38,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:00:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 77299 backedges. 1934 proven. 15 refuted. 0 times theorem prover too weak. 75350 trivial. 0 not checked. [2023-12-21 05:00:40,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173346578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:00:40,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:00:40,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [276, 9, 9] total 292 [2023-12-21 05:00:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326157111] [2023-12-21 05:00:40,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:00:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 293 states [2023-12-21 05:00:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:00:40,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 293 interpolants. [2023-12-21 05:00:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38378, Invalid=47178, Unknown=0, NotChecked=0, Total=85556 [2023-12-21 05:00:40,124 INFO L87 Difference]: Start difference. First operand 568 states and 573 transitions. Second operand has 293 states, 293 states have (on average 2.0238907849829353) internal successors, (593), 292 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:01:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:01:02,857 INFO L93 Difference]: Finished difference Result 618 states and 648 transitions. [2023-12-21 05:01:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2023-12-21 05:01:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 293 states, 293 states have (on average 2.0238907849829353) internal successors, (593), 292 states have internal predecessors, (593), 0 states have call successors, (0), 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 567 [2023-12-21 05:01:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:01:02,861 INFO L225 Difference]: With dead ends: 618 [2023-12-21 05:01:02,861 INFO L226 Difference]: Without dead ends: 599 [2023-12-21 05:01:02,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1683 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43853 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=117028, Invalid=205028, Unknown=0, NotChecked=0, Total=322056 [2023-12-21 05:01:02,874 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:01:02,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 57 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:01:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-21 05:01:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 579. [2023-12-21 05:01:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.0103806228373702) internal successors, (584), 578 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:01:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 584 transitions. [2023-12-21 05:01:02,897 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 584 transitions. Word has length 567 [2023-12-21 05:01:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:01:02,900 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 584 transitions. [2023-12-21 05:01:02,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 293 states, 293 states have (on average 2.0238907849829353) internal successors, (593), 292 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:01:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 584 transitions. [2023-12-21 05:01:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2023-12-21 05:01:02,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:01:02,903 INFO L195 NwaCegarLoop]: trace histogram [279, 275, 14, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 05:01:02,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 05:01:03,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 05:01:03,108 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:01:03,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:01:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 849746070, now seen corresponding path program 10 times [2023-12-21 05:01:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:01:03,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226645034] [2023-12-21 05:01:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:01:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:01:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:02:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 77946 backedges. 1932 proven. 75900 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-21 05:02:02,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:02:02,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226645034] [2023-12-21 05:02:02,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226645034] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:02:02,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412891574] [2023-12-21 05:02:02,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:02:02,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:02:02,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:02:02,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:02:02,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 05:02:03,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:02:03,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:02:03,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 552 conjunts are in the unsatisfiable core [2023-12-21 05:02:03,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:02:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 77946 backedges. 1932 proven. 75900 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-21 05:02:03,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:02:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 77946 backedges. 1932 proven. 75900 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-21 05:02:59,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412891574] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:02:59,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:02:59,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [277, 277, 277] total 554 [2023-12-21 05:02:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161479987] [2023-12-21 05:02:59,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:02:59,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 555 states [2023-12-21 05:02:59,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:02:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 555 interpolants. [2023-12-21 05:02:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2023-12-21 05:02:59,486 INFO L87 Difference]: Start difference. First operand 579 states and 584 transitions. Second operand has 555 states, 555 states have (on average 2.0126126126126125) internal successors, (1117), 554 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:03:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:03:06,488 INFO L93 Difference]: Finished difference Result 1161 states and 1448 transitions. [2023-12-21 05:03:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 554 states. [2023-12-21 05:03:06,489 INFO L78 Accepts]: Start accepts. Automaton has has 555 states, 555 states have (on average 2.0126126126126125) internal successors, (1117), 554 states have internal predecessors, (1117), 0 states have call successors, (0), 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 578 [2023-12-21 05:03:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:03:06,493 INFO L225 Difference]: With dead ends: 1161 [2023-12-21 05:03:06,493 INFO L226 Difference]: Without dead ends: 1133 [2023-12-21 05:03:06,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1431 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2023-12-21 05:03:06,502 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:03:06,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:03:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-12-21 05:03:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2023-12-21 05:03:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1132 states have (on average 1.0053003533568905) internal successors, (1138), 1132 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:03:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1138 transitions. [2023-12-21 05:03:06,553 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1138 transitions. Word has length 578 [2023-12-21 05:03:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:03:06,554 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1138 transitions. [2023-12-21 05:03:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 555 states, 555 states have (on average 2.0126126126126125) internal successors, (1117), 554 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:03:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1138 transitions. [2023-12-21 05:03:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2023-12-21 05:03:06,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:03:06,563 INFO L195 NwaCegarLoop]: trace histogram [556, 552, 14, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 05:03:06,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 05:03:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 05:03:06,771 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:03:06,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:03:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -175461545, now seen corresponding path program 11 times [2023-12-21 05:03:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:03:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868296347] [2023-12-21 05:03:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:03:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:03:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:09:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 309241 backedges. 3871 proven. 305256 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-21 05:09:01,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:09:01,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868296347] [2023-12-21 05:09:01,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868296347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:09:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646307701] [2023-12-21 05:09:01,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:09:01,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:09:01,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:09:01,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:09:01,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 05:09:05,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 557 check-sat command(s) [2023-12-21 05:09:05,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:09:05,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 3442 conjuncts, 1106 conjunts are in the unsatisfiable core [2023-12-21 05:09:05,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:09:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 309241 backedges. 3871 proven. 305256 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-21 05:09:06,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:12:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 309241 backedges. 3871 proven. 305256 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-21 05:12:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646307701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:12:33,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:12:33,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [554, 554, 554] total 1108 [2023-12-21 05:12:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902164978] [2023-12-21 05:12:33,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:12:33,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 1109 states [2023-12-21 05:12:33,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:12:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1109 interpolants. [2023-12-21 05:12:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614386, Invalid=614386, Unknown=0, NotChecked=0, Total=1228772 [2023-12-21 05:12:33,906 INFO L87 Difference]: Start difference. First operand 1133 states and 1138 transitions. Second operand has 1109 states, 1109 states have (on average 2.006311992786294) internal successors, (2225), 1108 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 05:13:18,962 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 05:13:18,962 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 [2023-12-21 05:13:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 939 states. [2023-12-21 05:13:19,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2816 GetRequests, 1709 SyntacticMatches, 0 SemanticMatches, 1107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 277.1s TimeCoverageRelationStatistics Valid=614386, Invalid=614386, Unknown=0, NotChecked=0, Total=1228772 [2023-12-21 05:13:19,047 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:13:19,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 05:13:19,048 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:13:19,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 05:13:19,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 05:13:19,262 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1133states) and FLOYD_HOARE automaton (currently 939 states, 1109 states before enhancement),while ReachableStatesComputation was computing reachable states (1902 states constructed, input type IntersectNwa). [2023-12-21 05:13:19,275 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1, 1] [2023-12-21 05:13:19,277 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:13:19,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:13:19 BoogieIcfgContainer [2023-12-21 05:13:19,279 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:13:19,279 INFO L158 Benchmark]: Toolchain (without parser) took 863324.44ms. Allocated memory was 242.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 201.4MB in the beginning and 889.8MB in the end (delta: -688.4MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-21 05:13:19,280 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory was 136.1MB in the beginning and 135.9MB in the end (delta: 190.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:13:19,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.45ms. Allocated memory is still 242.2MB. Free memory was 201.4MB in the beginning and 190.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 05:13:19,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.13ms. Allocated memory is still 242.2MB. Free memory was 190.4MB in the beginning and 188.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 05:13:19,281 INFO L158 Benchmark]: Boogie Preprocessor took 32.68ms. Allocated memory is still 242.2MB. Free memory was 188.8MB in the beginning and 187.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:13:19,281 INFO L158 Benchmark]: RCFGBuilder took 215.51ms. Allocated memory is still 242.2MB. Free memory was 187.2MB in the beginning and 176.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 05:13:19,281 INFO L158 Benchmark]: TraceAbstraction took 862859.14ms. Allocated memory was 242.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 176.2MB in the beginning and 889.8MB in the end (delta: -713.6MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-21 05:13:19,284 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 182.5MB. Free memory was 136.1MB in the beginning and 135.9MB in the end (delta: 190.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.45ms. Allocated memory is still 242.2MB. Free memory was 201.4MB in the beginning and 190.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.13ms. Allocated memory is still 242.2MB. Free memory was 190.4MB in the beginning and 188.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.68ms. Allocated memory is still 242.2MB. Free memory was 188.8MB in the beginning and 187.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 215.51ms. Allocated memory is still 242.2MB. Free memory was 187.2MB in the beginning and 176.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 862859.14ms. Allocated memory was 242.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 176.2MB in the beginning and 889.8MB in the end (delta: -713.6MB). Peak memory consumption was 1.2GB. 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: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (1133states) and FLOYD_HOARE automaton (currently 939 states, 1109 states before enhancement),while ReachableStatesComputation was computing reachable states (1902 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.8s, OverallIterations: 15, TraceHistogramMax: 556, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 77.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 309 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 206 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5214 IncrementalHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 103 mSDtfsCounter, 5214 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7869 GetRequests, 4995 SyntacticMatches, 0 SemanticMatches, 2874 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48400 ImplicationChecksByTransitivity, 420.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1133occurred in iteration=14, InterpolantAutomatonStates: 1496, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 773.1s InterpolantComputationTime, 6152 NumberOfCodeBlocks, 5460 NumberOfCodeBlocksAsserted, 634 NumberOfCheckSat, 9179 ConstructedInterpolants, 0 QuantifiedInterpolants, 29735 SizeOfPredicates, 1091 NumberOfNonLiveVariables, 7462 ConjunctsInSsa, 2212 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 188890/1485973 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