/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-lit/bh2017-ex1-poly.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:59:59,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:59:59,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 17:59:59,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:59:59,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:59:59,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:59:59,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:59:59,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:59:59,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:59:59,384 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:59:59,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:59:59,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:59:59,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:59:59,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:59:59,386 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:59:59,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:59:59,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:59:59,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:59:59,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:59:59,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:59:59,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:59:59,388 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:59:59,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:59:59,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:59:59,389 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:59:59,389 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:59:59,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:59:59,390 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:59:59,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:59:59,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:59:59,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:59:59,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:59:59,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:59:59,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:59:59,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:59:59,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:59:59,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:59:59,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:59:59,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:59:59,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:59:59,393 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:59:59,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:59:59,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:59:59,394 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:59:59,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:59:59,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:59:59,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:59:59,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:59:59,587 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:59:59,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bh2017-ex1-poly.i [2023-12-19 18:00:00,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:00:00,915 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:00:00,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bh2017-ex1-poly.i [2023-12-19 18:00:00,921 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5811cb2b/74a5807937fb4524bfaf8137d8088404/FLAG72dc1a8d9 [2023-12-19 18:00:00,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5811cb2b/74a5807937fb4524bfaf8137d8088404 [2023-12-19 18:00:00,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:00:00,936 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:00:00,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:00:00,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:00:00,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:00:00,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:00:00" (1/1) ... [2023-12-19 18:00:00,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719fcfdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:00, skipping insertion in model container [2023-12-19 18:00:00,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:00:00" (1/1) ... [2023-12-19 18:00:00,958 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:00:01,084 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bh2017-ex1-poly.i[804,817] [2023-12-19 18:00:01,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:00:01,101 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:00:01,111 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bh2017-ex1-poly.i[804,817] [2023-12-19 18:00:01,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:00:01,125 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:00:01,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01 WrapperNode [2023-12-19 18:00:01,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:00:01,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:00:01,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:00:01,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:00:01,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,153 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2023-12-19 18:00:01,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:00:01,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:00:01,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:00:01,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:00:01,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,172 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 18:00:01,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:00:01,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:00:01,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:00:01,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:00:01,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (1/1) ... [2023-12-19 18:00:01,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:00:01,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:00:01,209 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 18:00:01,238 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 18:00:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:00:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:00:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:00:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:00:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 18:00:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 18:00:01,287 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:00:01,289 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:00:01,390 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:00:01,414 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:00:01,414 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 18:00:01,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:00:01 BoogieIcfgContainer [2023-12-19 18:00:01,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:00:01,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:00:01,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:00:01,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:00:01,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:00:00" (1/3) ... [2023-12-19 18:00:01,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc5168e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:00:01, skipping insertion in model container [2023-12-19 18:00:01,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:00:01" (2/3) ... [2023-12-19 18:00:01,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc5168e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:00:01, skipping insertion in model container [2023-12-19 18:00:01,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:00:01" (3/3) ... [2023-12-19 18:00:01,437 INFO L112 eAbstractionObserver]: Analyzing ICFG bh2017-ex1-poly.i [2023-12-19 18:00:01,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:00:01,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:00:01,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:00:01,503 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;@3a7923fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:00:01,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:00:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:00:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:00:01,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:01,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:01,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:01,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1998107271, now seen corresponding path program 1 times [2023-12-19 18:00:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:01,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183791414] [2023-12-19 18:00:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:01,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:01,693 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 18:00:01,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183791414] [2023-12-19 18:00:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183791414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 18:00:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957726113] [2023-12-19 18:00:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:01,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:00:01,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:00:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:00:01,727 INFO L87 Difference]: Start difference. First operand has 20 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:01,780 INFO L93 Difference]: Finished difference Result 40 states and 72 transitions. [2023-12-19 18:00:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:00:01,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 18:00:01,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:01,789 INFO L225 Difference]: With dead ends: 40 [2023-12-19 18:00:01,789 INFO L226 Difference]: Without dead ends: 19 [2023-12-19 18:00:01,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:00:01,794 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:01,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:00:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-19 18:00:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-19 18:00:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:00:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2023-12-19 18:00:01,833 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 7 [2023-12-19 18:00:01,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:01,834 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-12-19 18:00:01,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:01,834 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2023-12-19 18:00:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:00:01,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:01,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:01,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 18:00:01,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:01,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1996498557, now seen corresponding path program 1 times [2023-12-19 18:00:01,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:01,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049713207] [2023-12-19 18:00:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:01,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:01,989 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 18:00:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049713207] [2023-12-19 18:00:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049713207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:01,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:01,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 18:00:01,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899929907] [2023-12-19 18:00:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:01,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:00:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:00:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:00:01,996 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:02,082 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-12-19 18:00:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 18:00:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 18:00:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:02,083 INFO L225 Difference]: With dead ends: 25 [2023-12-19 18:00:02,083 INFO L226 Difference]: Without dead ends: 23 [2023-12-19 18:00:02,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:00:02,085 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:02,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:00:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-19 18:00:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-19 18:00:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:00:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-12-19 18:00:02,097 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 7 [2023-12-19 18:00:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:02,097 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-12-19 18:00:02,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-19 18:00:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-19 18:00:02,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:02,098 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:02,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 18:00:02,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:02,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2106031398, now seen corresponding path program 1 times [2023-12-19 18:00:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778869001] [2023-12-19 18:00:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:00:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:02,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:02,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778869001] [2023-12-19 18:00:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778869001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:02,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 18:00:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177910848] [2023-12-19 18:00:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:02,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 18:00:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 18:00:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:00:02,321 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:00:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:02,485 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-12-19 18:00:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:00:02,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-19 18:00:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:02,489 INFO L225 Difference]: With dead ends: 41 [2023-12-19 18:00:02,489 INFO L226 Difference]: Without dead ends: 39 [2023-12-19 18:00:02,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:00:02,490 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:02,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:00:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-19 18:00:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2023-12-19 18:00:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 18:00:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2023-12-19 18:00:02,504 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 12 [2023-12-19 18:00:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:02,505 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2023-12-19 18:00:02,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:00:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2023-12-19 18:00:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 18:00:02,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:02,506 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 18:00:02,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:02,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2121220317, now seen corresponding path program 1 times [2023-12-19 18:00:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:02,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799454321] [2023-12-19 18:00:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:00:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:00:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:00:02,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:02,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799454321] [2023-12-19 18:00:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799454321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:02,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:02,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 18:00:02,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838765053] [2023-12-19 18:00:02,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:02,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 18:00:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 18:00:02,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:00:02,662 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 18:00:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:02,760 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2023-12-19 18:00:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:00:02,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-12-19 18:00:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:02,764 INFO L225 Difference]: With dead ends: 45 [2023-12-19 18:00:02,764 INFO L226 Difference]: Without dead ends: 43 [2023-12-19 18:00:02,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:00:02,775 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:02,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:00:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-19 18:00:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-12-19 18:00:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-19 18:00:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2023-12-19 18:00:02,793 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 17 [2023-12-19 18:00:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:02,794 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2023-12-19 18:00:02,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 18:00:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2023-12-19 18:00:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 18:00:02,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:02,795 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:02,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 18:00:02,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:02,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash 905923334, now seen corresponding path program 1 times [2023-12-19 18:00:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:02,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070146681] [2023-12-19 18:00:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:02,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:00:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:00:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:00:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 18:00:02,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:02,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070146681] [2023-12-19 18:00:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070146681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:02,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:02,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 18:00:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073352905] [2023-12-19 18:00:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:02,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:00:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:00:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:00:02,904 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 18:00:02,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:02,964 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2023-12-19 18:00:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 18:00:02,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-19 18:00:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:02,968 INFO L225 Difference]: With dead ends: 88 [2023-12-19 18:00:02,968 INFO L226 Difference]: Without dead ends: 55 [2023-12-19 18:00:02,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:00:02,970 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:02,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:00:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-19 18:00:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-19 18:00:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 18:00:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2023-12-19 18:00:02,989 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 22 [2023-12-19 18:00:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:02,989 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2023-12-19 18:00:02,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 18:00:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2023-12-19 18:00:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 18:00:02,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:02,990 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-19 18:00:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 18:00:02,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1205745070, now seen corresponding path program 1 times [2023-12-19 18:00:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329425329] [2023-12-19 18:00:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:00:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:00:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:00:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:00:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:00:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:00:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:00:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-19 18:00:03,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329425329] [2023-12-19 18:00:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329425329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:03,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:03,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 18:00:03,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617580422] [2023-12-19 18:00:03,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:03,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 18:00:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 18:00:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 18:00:03,144 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 18:00:03,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:03,199 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2023-12-19 18:00:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:00:03,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-12-19 18:00:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:03,202 INFO L225 Difference]: With dead ends: 61 [2023-12-19 18:00:03,202 INFO L226 Difference]: Without dead ends: 59 [2023-12-19 18:00:03,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:00:03,207 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:03,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:00:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-19 18:00:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-19 18:00:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 18:00:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2023-12-19 18:00:03,230 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 43 [2023-12-19 18:00:03,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:03,230 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2023-12-19 18:00:03,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 18:00:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2023-12-19 18:00:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 18:00:03,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:03,237 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 18:00:03,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:03,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash 296191259, now seen corresponding path program 1 times [2023-12-19 18:00:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:03,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14146899] [2023-12-19 18:00:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:00:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:00:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:00:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:00:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:00:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:00:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:00:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 18:00:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 18:00:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 18:00:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 18:00:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 18:00:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 18:00:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 18:00:03,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:03,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14146899] [2023-12-19 18:00:03,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14146899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:00:03,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638366031] [2023-12-19 18:00:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:03,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:03,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:00:03,600 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 18:00:03,626 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 18:00:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:03,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 18:00:03,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:00:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 18:00:04,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:00:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 18:00:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638366031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:00:04,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:00:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 24 [2023-12-19 18:00:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166191100] [2023-12-19 18:00:04,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:00:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 18:00:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:04,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 18:00:04,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-12-19 18:00:04,555 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 11 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-19 18:00:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:04,854 INFO L93 Difference]: Finished difference Result 79 states and 105 transitions. [2023-12-19 18:00:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 18:00:04,856 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 11 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38) Word has length 77 [2023-12-19 18:00:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:04,862 INFO L225 Difference]: With dead ends: 79 [2023-12-19 18:00:04,862 INFO L226 Difference]: Without dead ends: 77 [2023-12-19 18:00:04,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 163 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-12-19 18:00:04,863 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:04,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 259 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:00:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-19 18:00:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2023-12-19 18:00:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 18:00:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2023-12-19 18:00:04,893 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 77 [2023-12-19 18:00:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:04,894 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2023-12-19 18:00:04,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 11 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-19 18:00:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2023-12-19 18:00:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 18:00:04,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:04,899 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:04,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 18:00:05,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:05,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:05,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash 359688270, now seen corresponding path program 2 times [2023-12-19 18:00:05,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:05,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959195362] [2023-12-19 18:00:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:00:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:00:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:00:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:00:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:00:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:00:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:00:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 18:00:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 18:00:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 18:00:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 18:00:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 18:00:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 18:00:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 18:00:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-19 18:00:05,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:05,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959195362] [2023-12-19 18:00:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959195362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:00:05,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:00:05,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 18:00:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092238909] [2023-12-19 18:00:05,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:00:05,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:00:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:05,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:00:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:00:05,259 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 18:00:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:05,321 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2023-12-19 18:00:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 18:00:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2023-12-19 18:00:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:05,323 INFO L225 Difference]: With dead ends: 67 [2023-12-19 18:00:05,323 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 18:00:05,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:00:05,327 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:05,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 67 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:00:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 18:00:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 18:00:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 18:00:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 18:00:05,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2023-12-19 18:00:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:05,329 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 18:00:05,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 18:00:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 18:00:05,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 18:00:05,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:00:05,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 18:00:05,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 18:00:05,745 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 18:00:05,746 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-19 18:00:05,746 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and .cse0 (<= .cse1 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|)) (and (<= 3 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)))) [2023-12-19 18:00:05,746 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 1)) (and .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| .cse1) (<= 2 |ULTIMATE.start_main_~i~0#1|)))) [2023-12-19 18:00:05,746 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 1)) (and .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| .cse1) (<= 2 |ULTIMATE.start_main_~i~0#1|)))) [2023-12-19 18:00:05,746 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 1)) (and .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| .cse1) (<= 2 |ULTIMATE.start_main_~i~0#1|)))) [2023-12-19 18:00:05,746 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 18:00:05,747 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= 3 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 4) (<= (* 2 |ULTIMATE.start_main_~i~0#1|) (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= 2 |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:00:05,747 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~j~0#1| .cse1) (<= 2 |ULTIMATE.start_main_~i~0#1|)) (and (<= 3 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)))) [2023-12-19 18:00:05,747 INFO L895 garLoopResultBuilder]: At program point L24(lines 18 25) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~j~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse2 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 1)) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0) (and .cse1 (<= .cse2 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse2)) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 3) .cse0) (and .cse1 (= |ULTIMATE.start_main_~j~0#1| .cse2) (<= 2 |ULTIMATE.start_main_~i~0#1|)))) [2023-12-19 18:00:05,747 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 1)) (and .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| .cse1) (<= 2 |ULTIMATE.start_main_~i~0#1|)))) [2023-12-19 18:00:05,747 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~j~0#1| 4)) (.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~j~0#1| .cse1) (<= 2 |ULTIMATE.start_main_~i~0#1|)) (and (<= 3 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= .cse1 (+ 6 |ULTIMATE.start_main_~j~0#1|)) (<= (+ 2 |ULTIMATE.start_main_~j~0#1|) .cse1)))) [2023-12-19 18:00:05,747 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 31) the Hoare annotation is: (or (< 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0)) [2023-12-19 18:00:05,747 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 31) no Hoare annotation was computed. [2023-12-19 18:00:05,747 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-19 18:00:05,747 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-19 18:00:05,748 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-12-19 18:00:05,748 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-12-19 18:00:05,748 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-12-19 18:00:05,748 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-19 18:00:05,751 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:05,752 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:00:05,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:00:05 BoogieIcfgContainer [2023-12-19 18:00:05,763 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:00:05,763 INFO L158 Benchmark]: Toolchain (without parser) took 4827.82ms. Allocated memory is still 252.7MB. Free memory was 204.7MB in the beginning and 194.8MB in the end (delta: 9.9MB). Peak memory consumption was 125.1MB. Max. memory is 8.0GB. [2023-12-19 18:00:05,763 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 142.2MB in the beginning and 142.0MB in the end (delta: 155.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:00:05,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.68ms. Allocated memory is still 252.7MB. Free memory was 204.3MB in the beginning and 193.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:00:05,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.66ms. Allocated memory is still 252.7MB. Free memory was 193.6MB in the beginning and 192.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:00:05,764 INFO L158 Benchmark]: Boogie Preprocessor took 25.61ms. Allocated memory is still 252.7MB. Free memory was 192.1MB in the beginning and 190.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:00:05,764 INFO L158 Benchmark]: RCFGBuilder took 234.80ms. Allocated memory is still 252.7MB. Free memory was 190.6MB in the beginning and 180.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:00:05,765 INFO L158 Benchmark]: TraceAbstraction took 4344.03ms. Allocated memory is still 252.7MB. Free memory was 179.6MB in the beginning and 194.8MB in the end (delta: -15.3MB). Peak memory consumption was 100.0MB. Max. memory is 8.0GB. [2023-12-19 18:00:05,767 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 142.2MB in the beginning and 142.0MB in the end (delta: 155.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.68ms. Allocated memory is still 252.7MB. Free memory was 204.3MB in the beginning and 193.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.66ms. Allocated memory is still 252.7MB. Free memory was 193.6MB in the beginning and 192.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.61ms. Allocated memory is still 252.7MB. Free memory was 192.1MB in the beginning and 190.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 234.80ms. Allocated memory is still 252.7MB. Free memory was 190.6MB in the beginning and 180.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4344.03ms. Allocated memory is still 252.7MB. Free memory was 179.6MB in the beginning and 194.8MB in the end (delta: -15.3MB). Peak memory consumption was 100.0MB. 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 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 757 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 570 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 663 IncrementalHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 187 mSDtfsCounter, 663 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=7, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 52 PreInvPairs, 83 NumberOfFragments, 349 HoareAnnotationTreeSize, 52 FormulaSimplifications, 650 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FormulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 1029 SizeOfPredicates, 1 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 1573/1599 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((0 < i) || (i == 0)) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((2 == j) && (i == 1)) || ((i == 0) && (j == 0))) || ((((j <= 4) && ((2 * i) <= (6 + j))) && (2 <= j)) && ((2 + j) <= (2 * i)))) || (((1 <= i) && (i <= 3)) && (j == 0))) || (((j <= 4) && (j == (2 * i))) && (2 <= i))) RESULT: Ultimate proved your program to be correct! [2023-12-19 18:00:05,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...