/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:30:44,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:30:44,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 18:30:44,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:30:44,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:30:44,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:30:44,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:30:44,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:30:44,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:30:44,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:30:44,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:30:44,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:30:44,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:30:44,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:30:44,218 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:30:44,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:30:44,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:30:44,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:30:44,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:30:44,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:30:44,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:30:44,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:30:44,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:30:44,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:30:44,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:30:44,220 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:30:44,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:30:44,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:30:44,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:30:44,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:30:44,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:30:44,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:30:44,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:30:44,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:30:44,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:30:44,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:30:44,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:30:44,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:30:44,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:30:44,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:30:44,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:30:44,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:30:44,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:30:44,225 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:30:44,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:30:44,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:30:44,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:30:44,479 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:30:44,479 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:30:44,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2023-12-19 18:30:45,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:30:45,809 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:30:45,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2023-12-19 18:30:45,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b59b993a/5291fd1b6a9a4df6b8f6eeba56034dc4/FLAG1830c632f [2023-12-19 18:30:45,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b59b993a/5291fd1b6a9a4df6b8f6eeba56034dc4 [2023-12-19 18:30:45,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:30:45,831 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:30:45,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:30:45,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:30:45,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:30:45,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:30:45" (1/1) ... [2023-12-19 18:30:45,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9526d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:45, skipping insertion in model container [2023-12-19 18:30:45,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:30:45" (1/1) ... [2023-12-19 18:30:45,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:30:45,966 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_7.c[318,331] [2023-12-19 18:30:45,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:30:45,983 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:30:45,991 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_7.c[318,331] [2023-12-19 18:30:45,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:30:46,007 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:30:46,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46 WrapperNode [2023-12-19 18:30:46,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:30:46,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:30:46,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:30:46,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:30:46,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,033 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2023-12-19 18:30:46,034 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:30:46,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:30:46,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:30:46,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:30:46,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,050 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]. [2023-12-19 18:30:46,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:30:46,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:30:46,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:30:46,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:30:46,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (1/1) ... [2023-12-19 18:30:46,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:30:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:46,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 18:30:46,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 18:30:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:30:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:30:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:30:46,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:30:46,170 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:30:46,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:30:46,301 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:30:46,320 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:30:46,320 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 18:30:46,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:30:46 BoogieIcfgContainer [2023-12-19 18:30:46,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:30:46,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:30:46,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:30:46,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:30:46,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:30:45" (1/3) ... [2023-12-19 18:30:46,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcbab2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:30:46, skipping insertion in model container [2023-12-19 18:30:46,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:30:46" (2/3) ... [2023-12-19 18:30:46,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcbab2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:30:46, skipping insertion in model container [2023-12-19 18:30:46,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:30:46" (3/3) ... [2023-12-19 18:30:46,327 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_7.c [2023-12-19 18:30:46,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:30:46,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:30:46,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:30:46,376 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;@721bdb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:30:46,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:30:46,379 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) [2023-12-19 18:30:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:30:46,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:46,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:30:46,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2043540179, now seen corresponding path program 1 times [2023-12-19 18:30:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:46,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037054861] [2023-12-19 18:30:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:30:46,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:46,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037054861] [2023-12-19 18:30:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037054861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:30:46,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:30:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:30:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150281719] [2023-12-19 18:30:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:30:46,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 18:30:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:46,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 18:30:46,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:30:46,514 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) [2023-12-19 18:30:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:46,529 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2023-12-19 18:30:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 18:30:46,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-19 18:30:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:46,537 INFO L225 Difference]: With dead ends: 17 [2023-12-19 18:30:46,537 INFO L226 Difference]: Without dead ends: 8 [2023-12-19 18:30:46,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:30:46,542 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 [2023-12-19 18:30:46,543 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] [2023-12-19 18:30:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-19 18:30:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-19 18:30:46,565 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) [2023-12-19 18:30:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-12-19 18:30:46,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-12-19 18:30:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:46,567 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-12-19 18:30:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-19 18:30:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:30:46,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:46,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:30:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 18:30:46,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:46,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2052775389, now seen corresponding path program 1 times [2023-12-19 18:30:46,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060221110] [2023-12-19 18:30:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:30:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060221110] [2023-12-19 18:30:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060221110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:30:46,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:30:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:30:46,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772258094] [2023-12-19 18:30:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:30:46,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:30:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:30:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:30:46,657 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) [2023-12-19 18:30:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:46,684 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-12-19 18:30:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:30:46,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-19 18:30:46,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:46,685 INFO L225 Difference]: With dead ends: 17 [2023-12-19 18:30:46,686 INFO L226 Difference]: Without dead ends: 10 [2023-12-19 18:30:46,686 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 [2023-12-19 18:30:46,687 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 [2023-12-19 18:30:46,687 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] [2023-12-19 18:30:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-19 18:30:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-19 18:30:46,690 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) [2023-12-19 18:30:46,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-19 18:30:46,691 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2023-12-19 18:30:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:46,691 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-19 18:30:46,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-19 18:30:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-19 18:30:46,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:46,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:46,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 18:30:46,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:46,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash 82784800, now seen corresponding path program 1 times [2023-12-19 18:30:46,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:46,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078984213] [2023-12-19 18:30:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 18:30:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078984213] [2023-12-19 18:30:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078984213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:30:46,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:30:46,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:30:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944236345] [2023-12-19 18:30:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:30:46,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:30:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:30:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:30:46,741 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) [2023-12-19 18:30:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:46,751 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-12-19 18:30:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:30:46,751 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 [2023-12-19 18:30:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:46,752 INFO L225 Difference]: With dead ends: 15 [2023-12-19 18:30:46,752 INFO L226 Difference]: Without dead ends: 11 [2023-12-19 18:30:46,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:30:46,753 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 [2023-12-19 18:30:46,754 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] [2023-12-19 18:30:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-19 18:30:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-19 18:30:46,757 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) [2023-12-19 18:30:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-19 18:30:46,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2023-12-19 18:30:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-19 18:30:46,758 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) [2023-12-19 18:30:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-19 18:30:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 18:30:46,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:46,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:46,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 18:30:46,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:46,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1726973108, now seen corresponding path program 1 times [2023-12-19 18:30:46,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:46,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439420734] [2023-12-19 18:30:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 18:30:46,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439420734] [2023-12-19 18:30:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439420734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614911373] [2023-12-19 18:30:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:46,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:46,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:46,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:46,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 18:30:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:46,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 18:30:46,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 18:30:46,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 18:30:46,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614911373] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:46,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:46,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-19 18:30:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620467656] [2023-12-19 18:30:46,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 18:30:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 18:30:46,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:30:46,945 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:47,018 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2023-12-19 18:30:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:30:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-19 18:30:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:47,019 INFO L225 Difference]: With dead ends: 25 [2023-12-19 18:30:47,020 INFO L226 Difference]: Without dead ends: 17 [2023-12-19 18:30:47,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-19 18:30:47,021 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:30:47,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:30:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-19 18:30:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-19 18:30:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-19 18:30:47,026 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2023-12-19 18:30:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:47,026 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-19 18:30:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-19 18:30:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 18:30:47,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:47,027 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:47,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 18:30:47,232 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 [2023-12-19 18:30:47,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:47,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash 826113619, now seen corresponding path program 1 times [2023-12-19 18:30:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315964019] [2023-12-19 18:30:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:47,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315964019] [2023-12-19 18:30:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315964019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705946592] [2023-12-19 18:30:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:47,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:47,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:47,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:47,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 18:30:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:47,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 18:30:47,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:47,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:47,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705946592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:47,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-19 18:30:47,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581630432] [2023-12-19 18:30:47,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 18:30:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 18:30:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-19 18:30:47,516 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:47,554 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2023-12-19 18:30:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:30:47,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-19 18:30:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:47,555 INFO L225 Difference]: With dead ends: 37 [2023-12-19 18:30:47,556 INFO L226 Difference]: Without dead ends: 25 [2023-12-19 18:30:47,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-19 18:30:47,558 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:30:47,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:30:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-19 18:30:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-19 18:30:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-12-19 18:30:47,573 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2023-12-19 18:30:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:47,573 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-12-19 18:30:47,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-12-19 18:30:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 18:30:47,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:47,575 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:47,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 18:30:47,784 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 [2023-12-19 18:30:47,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:47,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1672919495, now seen corresponding path program 2 times [2023-12-19 18:30:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:47,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820672049] [2023-12-19 18:30:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:48,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820672049] [2023-12-19 18:30:48,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820672049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:48,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261675207] [2023-12-19 18:30:48,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:30:48,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:48,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:48,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:48,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 18:30:48,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:30:48,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:30:48,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 18:30:48,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:48,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:48,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261675207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:48,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:48,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-19 18:30:48,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418858741] [2023-12-19 18:30:48,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:48,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 18:30:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 18:30:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-12-19 18:30:48,247 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:48,296 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2023-12-19 18:30:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 18:30:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-19 18:30:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:48,297 INFO L225 Difference]: With dead ends: 53 [2023-12-19 18:30:48,297 INFO L226 Difference]: Without dead ends: 41 [2023-12-19 18:30:48,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-12-19 18:30:48,298 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:30:48,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:30:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-19 18:30:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-19 18:30:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-12-19 18:30:48,304 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2023-12-19 18:30:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:48,305 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-12-19 18:30:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-12-19 18:30:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 18:30:48,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:48,306 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:48,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 18:30:48,511 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 [2023-12-19 18:30:48,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:48,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash -714926929, now seen corresponding path program 3 times [2023-12-19 18:30:48,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:48,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245087030] [2023-12-19 18:30:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:48,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:30:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245087030] [2023-12-19 18:30:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245087030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949293288] [2023-12-19 18:30:48,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:30:48,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:48,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:48,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:48,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 18:30:48,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-19 18:30:48,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:30:48,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 18:30:48,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-19 18:30:49,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-19 18:30:49,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949293288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:49,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:49,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 24 [2023-12-19 18:30:49,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098857723] [2023-12-19 18:30:49,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:49,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 18:30:49,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:49,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 18:30:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-12-19 18:30:49,155 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:49,380 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2023-12-19 18:30:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 18:30:49,380 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-19 18:30:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:49,382 INFO L225 Difference]: With dead ends: 65 [2023-12-19 18:30:49,382 INFO L226 Difference]: Without dead ends: 53 [2023-12-19 18:30:49,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=525, Invalid=1035, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 18:30:49,384 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:30:49,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:30:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-19 18:30:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2023-12-19 18:30:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-12-19 18:30:49,398 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2023-12-19 18:30:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:49,398 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-12-19 18:30:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-12-19 18:30:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 18:30:49,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:49,399 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 6, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:49,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 18:30:49,607 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 [2023-12-19 18:30:49,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:49,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash -346338708, now seen corresponding path program 4 times [2023-12-19 18:30:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:49,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950858271] [2023-12-19 18:30:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950858271] [2023-12-19 18:30:49,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950858271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099622567] [2023-12-19 18:30:49,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:30:49,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:49,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:49,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:50,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 18:30:50,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:30:50,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:30:50,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 18:30:50,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:50,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099622567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:50,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:50,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-12-19 18:30:50,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61190472] [2023-12-19 18:30:50,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 18:30:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 18:30:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 18:30:50,565 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:50,661 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2023-12-19 18:30:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 18:30:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 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 46 [2023-12-19 18:30:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:50,662 INFO L225 Difference]: With dead ends: 97 [2023-12-19 18:30:50,662 INFO L226 Difference]: Without dead ends: 81 [2023-12-19 18:30:50,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 18:30:50,664 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:30:50,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:30:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-19 18:30:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-19 18:30:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-12-19 18:30:50,673 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 46 [2023-12-19 18:30:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:50,673 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-12-19 18:30:50,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-12-19 18:30:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 18:30:50,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:50,675 INFO L195 NwaCegarLoop]: trace histogram [34, 32, 6, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:50,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 18:30:50,880 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 [2023-12-19 18:30:50,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:50,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1072320313, now seen corresponding path program 5 times [2023-12-19 18:30:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:50,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327073298] [2023-12-19 18:30:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:51,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327073298] [2023-12-19 18:30:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327073298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907178935] [2023-12-19 18:30:51,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:30:52,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:52,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:52,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:52,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 18:30:52,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2023-12-19 18:30:52,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:30:52,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-19 18:30:52,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:52,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907178935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:53,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:53,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2023-12-19 18:30:53,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054373306] [2023-12-19 18:30:53,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 18:30:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:53,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 18:30:53,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 18:30:53,586 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:30:53,769 INFO L93 Difference]: Finished difference Result 165 states and 205 transitions. [2023-12-19 18:30:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-19 18:30:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 0 states have call successors, (0), 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 80 [2023-12-19 18:30:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:30:53,770 INFO L225 Difference]: With dead ends: 165 [2023-12-19 18:30:53,770 INFO L226 Difference]: Without dead ends: 149 [2023-12-19 18:30:53,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 18:30:53,773 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:30:53,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:30:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-19 18:30:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-12-19 18:30:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 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) [2023-12-19 18:30:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2023-12-19 18:30:53,796 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 80 [2023-12-19 18:30:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:30:53,796 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2023-12-19 18:30:53,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:30:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2023-12-19 18:30:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-19 18:30:53,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:30:53,798 INFO L195 NwaCegarLoop]: trace histogram [68, 66, 6, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:30:53,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 18:30:54,011 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 [2023-12-19 18:30:54,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:30:54,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:30:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1894174483, now seen corresponding path program 6 times [2023-12-19 18:30:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:30:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769410914] [2023-12-19 18:30:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:30:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:30:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:30:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 201 proven. 4422 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 18:30:57,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:30:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769410914] [2023-12-19 18:30:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769410914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:30:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86703420] [2023-12-19 18:30:57,550 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:30:57,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:30:57,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:30:57,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:30:57,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 18:30:57,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-19 18:30:57,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:30:57,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 18:30:57,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:30:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 202 proven. 21 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2023-12-19 18:30:58,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:30:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 202 proven. 21 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2023-12-19 18:30:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86703420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:30:58,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:30:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 9, 9] total 84 [2023-12-19 18:30:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272777466] [2023-12-19 18:30:58,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:30:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-19 18:30:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:30:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-19 18:30:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2498, Invalid=4642, Unknown=0, NotChecked=0, Total=7140 [2023-12-19 18:30:58,439 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:31:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:31:00,512 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2023-12-19 18:31:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-19 18:31:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 0 states have call successors, (0), 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 148 [2023-12-19 18:31:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:31:00,514 INFO L225 Difference]: With dead ends: 181 [2023-12-19 18:31:00,514 INFO L226 Difference]: Without dead ends: 165 [2023-12-19 18:31:00,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=8059, Invalid=14893, Unknown=0, NotChecked=0, Total=22952 [2023-12-19 18:31:00,521 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:31:00,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:31:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-19 18:31:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2023-12-19 18:31:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0253164556962024) internal successors, (162), 158 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:31:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2023-12-19 18:31:00,532 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 148 [2023-12-19 18:31:00,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:31:00,532 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2023-12-19 18:31:00,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:31:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2023-12-19 18:31:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-19 18:31:00,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:31:00,535 INFO L195 NwaCegarLoop]: trace histogram [69, 67, 14, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:31:00,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 18:31:00,740 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 [2023-12-19 18:31:00,740 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:31:00,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:31:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash -480709040, now seen corresponding path program 7 times [2023-12-19 18:31:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:31:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170511271] [2023-12-19 18:31:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:31:00,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:31:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:31:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:31:03,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:31:03,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170511271] [2023-12-19 18:31:03,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170511271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:31:03,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41082349] [2023-12-19 18:31:03,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:31:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:31:03,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:31:03,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:31:03,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 18:31:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:31:03,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-19 18:31:03,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:31:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:31:04,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:31:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:31:08,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41082349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:31:08,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:31:08,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 138 [2023-12-19 18:31:08,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919980141] [2023-12-19 18:31:08,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:31:08,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-12-19 18:31:08,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:31:08,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-12-19 18:31:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2023-12-19 18:31:08,795 INFO L87 Difference]: Start difference. First operand 159 states and 162 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) [2023-12-19 18:31:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:31:09,131 INFO L93 Difference]: Finished difference Result 321 states and 396 transitions. [2023-12-19 18:31:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-19 18:31:09,131 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 158 [2023-12-19 18:31:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:31:09,133 INFO L225 Difference]: With dead ends: 321 [2023-12-19 18:31:09,133 INFO L226 Difference]: Without dead ends: 297 [2023-12-19 18:31:09,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2023-12-19 18:31:09,136 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:31:09,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:31:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-19 18:31:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-12-19 18:31:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.0135135135135136) internal successors, (300), 296 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:31:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2023-12-19 18:31:09,158 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 158 [2023-12-19 18:31:09,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:31:09,159 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2023-12-19 18:31:09,159 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) [2023-12-19 18:31:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2023-12-19 18:31:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 18:31:09,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:31:09,167 INFO L195 NwaCegarLoop]: trace histogram [138, 136, 14, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:31:09,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 18:31:09,373 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 [2023-12-19 18:31:09,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:31:09,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:31:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash 13597185, now seen corresponding path program 8 times [2023-12-19 18:31:09,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:31:09,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477743048] [2023-12-19 18:31:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:31:09,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:31:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:31:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 19149 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:31:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:31:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477743048] [2023-12-19 18:31:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477743048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:31:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103100806] [2023-12-19 18:31:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:31:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:31:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:31:21,992 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:31:21,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 18:31:22,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:31:22,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:31:22,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 274 conjunts are in the unsatisfiable core [2023-12-19 18:31:22,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:31:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 19149 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:31:22,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:31:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19149 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:31:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103100806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:31:40,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:31:40,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138, 138] total 276 [2023-12-19 18:31:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459297224] [2023-12-19 18:31:40,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:31:40,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2023-12-19 18:31:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:31:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2023-12-19 18:31:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2023-12-19 18:31:40,900 INFO L87 Difference]: Start difference. First operand 297 states and 300 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) [2023-12-19 18:31:41,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:31:41,968 INFO L93 Difference]: Finished difference Result 597 states and 741 transitions. [2023-12-19 18:31:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2023-12-19 18:31:41,968 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 296 [2023-12-19 18:31:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:31:41,970 INFO L225 Difference]: With dead ends: 597 [2023-12-19 18:31:41,970 INFO L226 Difference]: Without dead ends: 573 [2023-12-19 18:31:41,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2023-12-19 18:31:41,974 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 [2023-12-19 18:31:41,975 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] [2023-12-19 18:31:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-19 18:31:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2023-12-19 18:31:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.006993006993007) internal successors, (576), 572 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:31:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 576 transitions. [2023-12-19 18:31:42,003 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 576 transitions. Word has length 296 [2023-12-19 18:31:42,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:31:42,003 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 576 transitions. [2023-12-19 18:31:42,004 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) [2023-12-19 18:31:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 576 transitions. [2023-12-19 18:31:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-19 18:31:42,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:31:42,013 INFO L195 NwaCegarLoop]: trace histogram [276, 274, 14, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:31:42,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 18:31:42,219 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 [2023-12-19 18:31:42,219 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:31:42,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:31:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash 735471011, now seen corresponding path program 9 times [2023-12-19 18:31:42,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:31:42,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094706425] [2023-12-19 18:31:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:31:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:31:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:32:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 76281 backedges. 825 proven. 75350 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 18:32:42,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:32:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094706425] [2023-12-19 18:32:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094706425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:32:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472546448] [2023-12-19 18:32:42,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:32:42,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:32:42,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:32:42,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:32:42,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 18:32:42,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-19 18:32:42,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:32:42,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 18:32:42,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:32:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 76281 backedges. 1370 proven. 4 refuted. 0 times theorem prover too weak. 74907 trivial. 0 not checked. [2023-12-19 18:32:42,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:32:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 76281 backedges. 1370 proven. 4 refuted. 0 times theorem prover too weak. 74907 trivial. 0 not checked. [2023-12-19 18:32:43,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472546448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:32:43,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:32:43,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [276, 5, 5] total 283 [2023-12-19 18:32:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164977987] [2023-12-19 18:32:43,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:32:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 283 states [2023-12-19 18:32:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:32:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 283 interpolants. [2023-12-19 18:32:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39903, Invalid=39903, Unknown=0, NotChecked=0, Total=79806 [2023-12-19 18:32:43,496 INFO L87 Difference]: Start difference. First operand 573 states and 576 transitions. Second operand has 283 states, 283 states have (on average 2.0282685512367493) internal successors, (574), 283 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:32:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:32:44,807 INFO L93 Difference]: Finished difference Result 607 states and 622 transitions. [2023-12-19 18:32:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-12-19 18:32:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 283 states, 283 states have (on average 2.0282685512367493) internal successors, (574), 283 states have internal predecessors, (574), 0 states have call successors, (0), 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 572 [2023-12-19 18:32:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:32:44,811 INFO L225 Difference]: With dead ends: 607 [2023-12-19 18:32:44,811 INFO L226 Difference]: Without dead ends: 583 [2023-12-19 18:32:44,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1418 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=39903, Invalid=39903, Unknown=0, NotChecked=0, Total=79806 [2023-12-19 18:32:44,815 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 18:32:44,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 18:32:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-19 18:32:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2023-12-19 18:32:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.013745704467354) internal successors, (590), 582 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:32:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 590 transitions. [2023-12-19 18:32:44,848 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 590 transitions. Word has length 572 [2023-12-19 18:32:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:32:44,849 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 590 transitions. [2023-12-19 18:32:44,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 283 states, 283 states have (on average 2.0282685512367493) internal successors, (574), 283 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:32:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 590 transitions. [2023-12-19 18:32:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-19 18:32:44,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:32:44,857 INFO L195 NwaCegarLoop]: trace histogram [281, 275, 14, 6, 1, 1, 1, 1, 1, 1] [2023-12-19 18:32:44,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 18:32:45,062 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 [2023-12-19 18:32:45,062 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:32:45,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:32:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash 177975372, now seen corresponding path program 10 times [2023-12-19 18:32:45,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:32:45,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166753129] [2023-12-19 18:32:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:32:45,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:32:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:33:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 79066 backedges. 3036 proven. 75900 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 18:33:48,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:33:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166753129] [2023-12-19 18:33:48,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166753129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:33:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786549495] [2023-12-19 18:33:48,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:33:48,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:33:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:33:48,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:33:48,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 18:33:49,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:33:49,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:33:49,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 552 conjunts are in the unsatisfiable core [2023-12-19 18:33:49,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:33:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 79066 backedges. 3036 proven. 75900 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 18:33:49,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:35:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 79066 backedges. 3036 proven. 75900 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 18:35:05,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786549495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:35:05,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:35:05,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [277, 277, 277] total 554 [2023-12-19 18:35:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708464301] [2023-12-19 18:35:05,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:35:05,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 555 states [2023-12-19 18:35:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:35:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 555 interpolants. [2023-12-19 18:35:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2023-12-19 18:35:05,161 INFO L87 Difference]: Start difference. First operand 583 states and 590 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) [2023-12-19 18:35:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:35:12,779 INFO L93 Difference]: Finished difference Result 1169 states and 1460 transitions. [2023-12-19 18:35:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 554 states. [2023-12-19 18:35:12,780 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 582 [2023-12-19 18:35:12,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:35:12,784 INFO L225 Difference]: With dead ends: 1169 [2023-12-19 18:35:12,784 INFO L226 Difference]: Without dead ends: 1137 [2023-12-19 18:35:12,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1439 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 98.9s TimeCoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2023-12-19 18:35:12,798 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:35:12,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:35:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-19 18:35:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2023-12-19 18:35:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 1.0070422535211268) internal successors, (1144), 1136 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:35:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1144 transitions. [2023-12-19 18:35:12,860 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1144 transitions. Word has length 582 [2023-12-19 18:35:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:35:12,860 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1144 transitions. [2023-12-19 18:35:12,861 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) [2023-12-19 18:35:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1144 transitions. [2023-12-19 18:35:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2023-12-19 18:35:12,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:35:12,872 INFO L195 NwaCegarLoop]: trace histogram [558, 552, 14, 6, 1, 1, 1, 1, 1, 1] [2023-12-19 18:35:12,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 18:35:13,080 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 [2023-12-19 18:35:13,080 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:35:13,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:35:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -813237619, now seen corresponding path program 11 times [2023-12-19 18:35:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:35:13,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277893389] [2023-12-19 18:35:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:35:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:35:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:41:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 311469 backedges. 6083 proven. 305256 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 18:41:29,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:41:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277893389] [2023-12-19 18:41:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277893389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:41:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949154724] [2023-12-19 18:41:29,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:41:29,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:41:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:41:29,928 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:41:29,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 18:41:34,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 559 check-sat command(s) [2023-12-19 18:41:34,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:41:34,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 3454 conjuncts, 1106 conjunts are in the unsatisfiable core [2023-12-19 18:41:34,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:41:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 311469 backedges. 6083 proven. 305256 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 18:41:35,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 18:44:10,054 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:44:10,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 18:44:10,079 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 [2023-12-19 18:44:10,083 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:44:10,255 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 [2023-12-19 18:44:10,255 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 1137 with TraceHistMax 558,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 880 known predicates. [2023-12-19 18:44:10,270 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1, 1] [2023-12-19 18:44:10,272 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:44:10,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:44:10 BoogieIcfgContainer [2023-12-19 18:44:10,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:44:10,274 INFO L158 Benchmark]: Toolchain (without parser) took 804442.78ms. Allocated memory was 254.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 204.9MB in the beginning and 1.2GB in the end (delta: -986.6MB). Peak memory consumption was 277.4MB. Max. memory is 8.0GB. [2023-12-19 18:44:10,274 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 142.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:44:10,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.36ms. Allocated memory is still 254.8MB. Free memory was 204.9MB in the beginning and 193.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:44:10,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.71ms. Allocated memory is still 254.8MB. Free memory was 193.9MB in the beginning and 192.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:44:10,275 INFO L158 Benchmark]: Boogie Preprocessor took 23.50ms. Allocated memory is still 254.8MB. Free memory was 192.8MB in the beginning and 191.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:44:10,275 INFO L158 Benchmark]: RCFGBuilder took 262.33ms. Allocated memory is still 254.8MB. Free memory was 190.7MB in the beginning and 180.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:44:10,275 INFO L158 Benchmark]: TraceAbstraction took 803951.16ms. Allocated memory was 254.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 179.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 252.3MB. Max. memory is 8.0GB. [2023-12-19 18:44:10,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 142.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.36ms. Allocated memory is still 254.8MB. Free memory was 204.9MB in the beginning and 193.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.71ms. Allocated memory is still 254.8MB. Free memory was 193.9MB in the beginning and 192.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.50ms. Allocated memory is still 254.8MB. Free memory was 192.8MB in the beginning and 191.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 262.33ms. Allocated memory is still 254.8MB. Free memory was 190.7MB in the beginning and 180.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 803951.16ms. Allocated memory was 254.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 179.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 252.3MB. 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 analyzing trace of length 1137 with TraceHistMax 558,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 880 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 803.9s, OverallIterations: 15, TraceHistogramMax: 558, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 307 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 205 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3281 IncrementalHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 102 mSDtfsCounter, 3281 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4923 GetRequests, 3355 SyntacticMatches, 0 SemanticMatches, 1568 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5780 ImplicationChecksByTransitivity, 161.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1137occurred in iteration=14, InterpolantAutomatonStates: 1501, 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, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 248.1s InterpolantComputationTime, 3962 NumberOfCodeBlocks, 3266 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 5897 ConstructedInterpolants, 0 QuantifiedInterpolants, 14577 SizeOfPredicates, 535 NumberOfNonLiveVariables, 4177 ConjunctsInSsa, 1106 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 176187/557524 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