/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/loop-acceleration/nested_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:18:15,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:18:15,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:18:15,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:18:15,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:18:15,607 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:18:15,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:18:15,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:18:15,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:18:15,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:18:15,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:18:15,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:18:15,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:18:15,611 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:18:15,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:18:15,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:18:15,613 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:18:15,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:18:15,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:18:15,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:18:15,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:18:15,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:18:15,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:18:15,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:18:15,615 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:18:15,615 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:18:15,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:18:15,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:18:15,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:18:15,870 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:18:15,870 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:18:15,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/nested_1-1.c [2023-03-31 00:18:17,047 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:18:17,221 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:18:17,221 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/nested_1-1.c [2023-03-31 00:18:17,225 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3587d190/6702805e6fec44e0bc1169c8c58f6f1d/FLAGc38d31569 [2023-03-31 00:18:17,236 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3587d190/6702805e6fec44e0bc1169c8c58f6f1d [2023-03-31 00:18:17,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:18:17,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:18:17,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:18:17,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:18:17,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:18:17,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c55148f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17, skipping insertion in model container [2023-03-31 00:18:17,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:18:17,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:18:17,376 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/nested_1-1.c[322,335] [2023-03-31 00:18:17,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:18:17,394 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:18:17,402 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/nested_1-1.c[322,335] [2023-03-31 00:18:17,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:18:17,414 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:18:17,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17 WrapperNode [2023-03-31 00:18:17,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:18:17,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:18:17,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:18:17,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:18:17,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:18:17,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:18:17,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:18:17,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:18:17,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (1/1) ... [2023-03-31 00:18:17,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:18:17,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:17,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 00:18:17,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 00:18:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:18:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:18:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:18:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:18:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:18:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:18:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:18:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:18:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:18:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:18:17,558 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:18:17,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:18:17,647 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:18:17,652 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:18:17,652 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 00:18:17,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:18:17 BoogieIcfgContainer [2023-03-31 00:18:17,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:18:17,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:18:17,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:18:17,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:18:17,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:18:17" (1/3) ... [2023-03-31 00:18:17,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f08b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:18:17, skipping insertion in model container [2023-03-31 00:18:17,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:18:17" (2/3) ... [2023-03-31 00:18:17,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f08b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:18:17, skipping insertion in model container [2023-03-31 00:18:17,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:18:17" (3/3) ... [2023-03-31 00:18:17,662 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2023-03-31 00:18:17,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:18:17,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:18:17,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:18:17,721 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=LoopsAndPotentialCycles, 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;@76095897, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:18:17,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:18:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 00:18:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 00:18:17,730 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:17,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:17,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:17,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2021311625, now seen corresponding path program 1 times [2023-03-31 00:18:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874692401] [2023-03-31 00:18:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:18:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:17,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874692401] [2023-03-31 00:18:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874692401] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:18:17,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:18:17,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:18:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118791463] [2023-03-31 00:18:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:18:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:18:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:18:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:18:18,019 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:18,108 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2023-03-31 00:18:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 00:18:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 00:18:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:18,119 INFO L225 Difference]: With dead ends: 37 [2023-03-31 00:18:18,119 INFO L226 Difference]: Without dead ends: 17 [2023-03-31 00:18:18,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:18:18,125 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:18,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:18:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-03-31 00:18:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2023-03-31 00:18:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-03-31 00:18:18,157 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-03-31 00:18:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:18,157 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-03-31 00:18:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-03-31 00:18:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 00:18:18,158 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:18,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:18:18,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:18,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2037585725, now seen corresponding path program 1 times [2023-03-31 00:18:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:18,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605655389] [2023-03-31 00:18:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:18:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605655389] [2023-03-31 00:18:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605655389] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:18:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:18:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:18:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216596684] [2023-03-31 00:18:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:18:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:18:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:18:18,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:18:18,285 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:18,330 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2023-03-31 00:18:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 00:18:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 00:18:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:18,331 INFO L225 Difference]: With dead ends: 24 [2023-03-31 00:18:18,331 INFO L226 Difference]: Without dead ends: 16 [2023-03-31 00:18:18,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:18:18,333 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:18,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:18:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-03-31 00:18:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-03-31 00:18:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-03-31 00:18:18,342 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2023-03-31 00:18:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:18,342 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-03-31 00:18:18,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-03-31 00:18:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 00:18:18,343 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:18,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:18,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:18:18,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:18,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash -183414982, now seen corresponding path program 1 times [2023-03-31 00:18:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445436734] [2023-03-31 00:18:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:18:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445436734] [2023-03-31 00:18:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445436734] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:18:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692711523] [2023-03-31 00:18:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:18,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:18,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:18,517 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) [2023-03-31 00:18:18,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:18:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:18,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-31 00:18:18,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:18:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 00:18:18,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:18:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 00:18:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692711523] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:18:18,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:18:18,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-03-31 00:18:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819108132] [2023-03-31 00:18:18,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:18:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 00:18:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 00:18:18,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:18:18,752 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:19,040 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-03-31 00:18:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 00:18:19,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 00:18:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:19,043 INFO L225 Difference]: With dead ends: 41 [2023-03-31 00:18:19,043 INFO L226 Difference]: Without dead ends: 32 [2023-03-31 00:18:19,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2023-03-31 00:18:19,047 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:19,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 32 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:18:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-03-31 00:18:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-03-31 00:18:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-03-31 00:18:19,073 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2023-03-31 00:18:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:19,073 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-03-31 00:18:19,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-03-31 00:18:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-03-31 00:18:19,076 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:19,077 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:19,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 00:18:19,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:19,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:19,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1464546569, now seen corresponding path program 2 times [2023-03-31 00:18:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565448282] [2023-03-31 00:18:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-03-31 00:18:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565448282] [2023-03-31 00:18:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565448282] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:18:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847730522] [2023-03-31 00:18:19,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-31 00:18:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:19,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:19,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:18:19,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:18:19,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-31 00:18:19,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:18:19,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2023-03-31 00:18:19,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:18:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-03-31 00:18:19,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:18:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-03-31 00:18:19,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847730522] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:18:19,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:18:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-03-31 00:18:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617700377] [2023-03-31 00:18:19,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:18:19,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 00:18:19,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:19,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 00:18:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-03-31 00:18:19,802 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:19,963 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2023-03-31 00:18:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 00:18:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-03-31 00:18:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:19,966 INFO L225 Difference]: With dead ends: 70 [2023-03-31 00:18:19,966 INFO L226 Difference]: Without dead ends: 48 [2023-03-31 00:18:19,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-03-31 00:18:19,969 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:19,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:18:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-03-31 00:18:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-03-31 00:18:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2023-03-31 00:18:19,995 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 31 [2023-03-31 00:18:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:19,996 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2023-03-31 00:18:19,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2023-03-31 00:18:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 00:18:19,998 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:19,998 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:20,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 00:18:20,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-31 00:18:20,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:20,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -886661367, now seen corresponding path program 3 times [2023-03-31 00:18:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232792718] [2023-03-31 00:18:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-03-31 00:18:20,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232792718] [2023-03-31 00:18:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232792718] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:18:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006108062] [2023-03-31 00:18:20,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 00:18:20,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:20,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:20,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:18:20,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:18:20,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-03-31 00:18:20,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:18:20,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 29 conjunts are in the unsatisfiable core [2023-03-31 00:18:20,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:18:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 112 proven. 162 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-03-31 00:18:20,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:18:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 154 proven. 21 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-03-31 00:18:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006108062] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:18:20,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:18:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2023-03-31 00:18:20,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360656037] [2023-03-31 00:18:20,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:18:20,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-03-31 00:18:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-03-31 00:18:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-03-31 00:18:20,794 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:21,048 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2023-03-31 00:18:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 00:18:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2023-03-31 00:18:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:21,049 INFO L225 Difference]: With dead ends: 98 [2023-03-31 00:18:21,050 INFO L226 Difference]: Without dead ends: 64 [2023-03-31 00:18:21,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2023-03-31 00:18:21,051 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:21,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 42 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:18:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-03-31 00:18:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-03-31 00:18:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2023-03-31 00:18:21,069 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 47 [2023-03-31 00:18:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:21,069 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2023-03-31 00:18:21,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2023-03-31 00:18:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-03-31 00:18:21,071 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:21,071 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:21,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 00:18:21,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:21,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:21,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash 538347785, now seen corresponding path program 4 times [2023-03-31 00:18:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118614120] [2023-03-31 00:18:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:21,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-03-31 00:18:21,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118614120] [2023-03-31 00:18:21,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118614120] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:18:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071851531] [2023-03-31 00:18:21,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 00:18:21,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:21,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:18:21,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 00:18:21,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 00:18:21,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:18:21,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2023-03-31 00:18:21,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:18:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-03-31 00:18:21,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:18:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 30 proven. 752 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-03-31 00:18:22,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071851531] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:18:22,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:18:22,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 24 [2023-03-31 00:18:22,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272359463] [2023-03-31 00:18:22,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:18:22,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-03-31 00:18:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-03-31 00:18:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2023-03-31 00:18:22,099 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:23,264 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2023-03-31 00:18:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 00:18:23,265 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2023-03-31 00:18:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:23,266 INFO L225 Difference]: With dead ends: 147 [2023-03-31 00:18:23,266 INFO L226 Difference]: Without dead ends: 142 [2023-03-31 00:18:23,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=516, Invalid=1290, Unknown=0, NotChecked=0, Total=1806 [2023-03-31 00:18:23,267 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:23,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 57 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:18:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-03-31 00:18:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-03-31 00:18:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 137 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2023-03-31 00:18:23,319 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 63 [2023-03-31 00:18:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:23,320 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2023-03-31 00:18:23,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:23,321 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2023-03-31 00:18:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-03-31 00:18:23,331 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:23,331 INFO L195 NwaCegarLoop]: trace histogram [100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 00:18:23,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:23,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:23,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1760569399, now seen corresponding path program 5 times [2023-03-31 00:18:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015209690] [2023-03-31 00:18:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:23,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-03-31 00:18:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015209690] [2023-03-31 00:18:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015209690] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:18:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483526215] [2023-03-31 00:18:24,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-31 00:18:24,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:24,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:18:24,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 00:18:27,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2023-03-31 00:18:27,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:18:27,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 45 conjunts are in the unsatisfiable core [2023-03-31 00:18:27,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:18:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5600 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-03-31 00:18:27,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:18:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-03-31 00:18:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483526215] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:18:28,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:18:28,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 13] total 36 [2023-03-31 00:18:28,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404564542] [2023-03-31 00:18:28,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:18:28,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-03-31 00:18:28,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-03-31 00:18:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2023-03-31 00:18:28,414 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 35 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:33,142 INFO L93 Difference]: Finished difference Result 303 states and 336 transitions. [2023-03-31 00:18:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-03-31 00:18:33,142 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 35 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2023-03-31 00:18:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:33,144 INFO L225 Difference]: With dead ends: 303 [2023-03-31 00:18:33,144 INFO L226 Difference]: Without dead ends: 298 [2023-03-31 00:18:33,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1083, Invalid=3473, Unknown=0, NotChecked=0, Total=4556 [2023-03-31 00:18:33,147 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 141 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:33,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 102 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 00:18:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-03-31 00:18:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-03-31 00:18:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 293 states have (on average 1.0784982935153584) internal successors, (316), 293 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 320 transitions. [2023-03-31 00:18:33,202 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 320 transitions. Word has length 141 [2023-03-31 00:18:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:33,203 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 320 transitions. [2023-03-31 00:18:33,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 35 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 320 transitions. [2023-03-31 00:18:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-03-31 00:18:33,205 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:18:33,205 INFO L195 NwaCegarLoop]: trace histogram [220, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:18:33,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 00:18:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:33,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:18:33,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:18:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash -482736823, now seen corresponding path program 6 times [2023-03-31 00:18:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:18:33,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116229852] [2023-03-31 00:18:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:18:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:18:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:18:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:18:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 0 proven. 28435 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-03-31 00:18:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:18:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116229852] [2023-03-31 00:18:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116229852] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:18:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933159173] [2023-03-31 00:18:35,086 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-03-31 00:18:35,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:18:35,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:18:35,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 00:18:36,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-03-31 00:18:36,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:18:36,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 00:18:36,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:18:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 2584 proven. 0 refuted. 0 times theorem prover too weak. 27061 trivial. 0 not checked. [2023-03-31 00:18:37,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:18:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933159173] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:18:37,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 00:18:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [26] total 31 [2023-03-31 00:18:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315277082] [2023-03-31 00:18:37,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:18:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:18:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:18:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:18:37,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2023-03-31 00:18:37,301 INFO L87 Difference]: Start difference. First operand 298 states and 320 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:18:37,522 INFO L93 Difference]: Finished difference Result 298 states and 320 transitions. [2023-03-31 00:18:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 00:18:37,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 297 [2023-03-31 00:18:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:18:37,523 INFO L225 Difference]: With dead ends: 298 [2023-03-31 00:18:37,523 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 00:18:37,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2023-03-31 00:18:37,525 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 00:18:37,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:18:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 00:18:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 00:18:37,526 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) [2023-03-31 00:18:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 00:18:37,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 297 [2023-03-31 00:18:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:18:37,526 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 00:18:37,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:18:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 00:18:37,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 00:18:37,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:18:37,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-31 00:18:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:18:37,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 00:18:43,585 WARN L223 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 358 DAG size of output: 353 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-03-31 00:18:45,645 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 00:18:45,645 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2023-03-31 00:18:45,645 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 00:18:45,645 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-03-31 00:18:45,645 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (or (= main_~x~0 0) (and (< (mod main_~x~0 4294967296) 268435455) (< (mod (+ main_~x~0 4294967295) 4294967296) 268435455))) [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 27) the Hoare annotation is: true [2023-03-31 00:18:45,646 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 24) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (< (mod (+ main_~x~0 4294967295) 4294967296) 268435455)) [2023-03-31 00:18:45,646 INFO L895 garLoopResultBuilder]: At program point L16-3(lines 16 24) the Hoare annotation is: (and (<= 268435455 (mod main_~x~0 4294967296)) (< (mod (+ main_~x~0 4294967295) 4294967296) 268435455)) [2023-03-31 00:18:45,646 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2023-03-31 00:18:45,646 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 10) the Hoare annotation is: true [2023-03-31 00:18:45,647 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-03-31 00:18:45,647 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-03-31 00:18:45,647 INFO L899 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2023-03-31 00:18:45,647 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-03-31 00:18:45,650 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2023-03-31 00:18:45,651 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:18:45,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:18:45 BoogieIcfgContainer [2023-03-31 00:18:45,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:18:45,667 INFO L158 Benchmark]: Toolchain (without parser) took 28427.66ms. Allocated memory was 315.6MB in the beginning and 456.1MB in the end (delta: 140.5MB). Free memory was 268.6MB in the beginning and 173.1MB in the end (delta: 95.6MB). Peak memory consumption was 265.7MB. Max. memory is 8.0GB. [2023-03-31 00:18:45,667 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:18:45,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.94ms. Allocated memory is still 315.6MB. Free memory was 268.6MB in the beginning and 258.9MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 00:18:45,668 INFO L158 Benchmark]: Boogie Preprocessor took 21.95ms. Allocated memory is still 315.6MB. Free memory was 258.9MB in the beginning and 257.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 00:18:45,668 INFO L158 Benchmark]: RCFGBuilder took 216.18ms. Allocated memory is still 315.6MB. Free memory was 257.3MB in the beginning and 246.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:18:45,668 INFO L158 Benchmark]: TraceAbstraction took 28009.94ms. Allocated memory was 315.6MB in the beginning and 456.1MB in the end (delta: 140.5MB). Free memory was 246.3MB in the beginning and 173.1MB in the end (delta: 73.2MB). Peak memory consumption was 243.6MB. Max. memory is 8.0GB. [2023-03-31 00:18:45,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.94ms. Allocated memory is still 315.6MB. Free memory was 268.6MB in the beginning and 258.9MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.95ms. Allocated memory is still 315.6MB. Free memory was 258.9MB in the beginning and 257.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 216.18ms. Allocated memory is still 315.6MB. Free memory was 257.3MB in the beginning and 246.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 28009.94ms. Allocated memory was 315.6MB in the beginning and 456.1MB in the end (delta: 140.5MB). Free memory was 246.3MB in the beginning and 173.1MB in the end (delta: 73.2MB). Peak memory consumption was 243.6MB. 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: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.9s, OverallIterations: 8, TraceHistogramMax: 220, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 345 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1839 IncrementalHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 48 mSDtfsCounter, 1839 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1060 GetRequests, 852 SyntacticMatches, 5 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=7, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 281 NumberOfFragments, 56 HoareAnnotationTreeSize, 15 FomulaSimplifications, 4783 FormulaSimplificationTreeSizeReduction, 5.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 7327 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1213 NumberOfCodeBlocks, 972 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 1491 ConstructedInterpolants, 2 QuantifiedInterpolants, 6793 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1101 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 34279/81896 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: (x == 0 && y == 0) || (x + 4294967295) % 4294967296 < 268435455 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x == 0 || (x % 4294967296 < 268435455 && (x + 4294967295) % 4294967296 < 268435455) RESULT: Ultimate proved your program to be correct! [2023-03-31 00:18:45,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...