/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-simple/deep-nested.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:01:44,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:01:44,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:01:44,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 17:01:44,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:01:44,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:01:44,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:01:44,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:01:44,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:01:44,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:01:44,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:01:44,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:01:44,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:01:44,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:01:44,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:01:44,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:01:44,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:01:44,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:01:44,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:01:44,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:01:44,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:01:44,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:01:44,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:01:44,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:01:44,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:01:44,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:01:44,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:01:44,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:01:44,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:01:44,372 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:01:44,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:01:44,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:01:44,372 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:01:44,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:01:44,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:01:44,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:01:44,373 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:01:44,373 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:01:44,374 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:01:44,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:01:44,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:01:44,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:01:44,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:01:44,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:01:44,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:01:44,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:01:44,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:01:44,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:01:44,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:01:44,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:01:44,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:01:44,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:01:44,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:01:44,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:01:44,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:01:44,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:01:44,817 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:01:44,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-simple/deep-nested.c [2022-10-15 17:01:44,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52be005e1/b097b80c5f1943d7a758154f10450b76/FLAG6f5b68d06 [2022-10-15 17:01:45,514 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:01:45,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-simple/deep-nested.c [2022-10-15 17:01:45,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52be005e1/b097b80c5f1943d7a758154f10450b76/FLAG6f5b68d06 [2022-10-15 17:01:45,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52be005e1/b097b80c5f1943d7a758154f10450b76 [2022-10-15 17:01:45,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:01:45,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:01:45,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:01:45,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:01:45,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:01:45,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:01:45" (1/1) ... [2022-10-15 17:01:45,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6150f209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:45, skipping insertion in model container [2022-10-15 17:01:45,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:01:45" (1/1) ... [2022-10-15 17:01:45,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:01:45,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:01:46,146 WARN L230 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-simple/deep-nested.c[625,638] [2022-10-15 17:01:46,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:01:46,165 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:01:46,185 WARN L230 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-simple/deep-nested.c[625,638] [2022-10-15 17:01:46,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:01:46,202 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:01:46,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46 WrapperNode [2022-10-15 17:01:46,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:01:46,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:01:46,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:01:46,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:01:46,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,247 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2022-10-15 17:01:46,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:01:46,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:01:46,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:01:46,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:01:46,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:01:46,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:01:46,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:01:46,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:01:46,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (1/1) ... [2022-10-15 17:01:46,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:01:46,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:46,324 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) [2022-10-15 17:01:46,339 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 [2022-10-15 17:01:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:01:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:01:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:01:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:01:46,504 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:01:46,507 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:01:46,729 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:01:46,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:01:46,739 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-15 17:01:46,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:01:46 BoogieIcfgContainer [2022-10-15 17:01:46,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:01:46,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:01:46,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:01:46,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:01:46,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:01:45" (1/3) ... [2022-10-15 17:01:46,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed733e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:01:46, skipping insertion in model container [2022-10-15 17:01:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:46" (2/3) ... [2022-10-15 17:01:46,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed733e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:01:46, skipping insertion in model container [2022-10-15 17:01:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:01:46" (3/3) ... [2022-10-15 17:01:46,753 INFO L112 eAbstractionObserver]: Analyzing ICFG deep-nested.c [2022-10-15 17:01:46,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:01:46,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 17:01:46,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:01:46,904 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@704614a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:01:46,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 17:01:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 17:01:46,928 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:46,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 17:01:46,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 28757316, now seen corresponding path program 1 times [2022-10-15 17:01:46,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:46,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824815961] [2022-10-15 17:01:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:47,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824815961] [2022-10-15 17:01:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824815961] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:47,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:47,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:01:47,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545100225] [2022-10-15 17:01:47,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:47,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 17:01:47,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 17:01:47,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:01:47,258 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-10-15 17:01:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:47,275 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-10-15 17:01:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 17:01:47,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 17:01:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:47,291 INFO L225 Difference]: With dead ends: 20 [2022-10-15 17:01:47,291 INFO L226 Difference]: Without dead ends: 18 [2022-10-15 17:01:47,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:01:47,302 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:47,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-15 17:01:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-10-15 17:01:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-10-15 17:01:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-10-15 17:01:47,346 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2022-10-15 17:01:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:47,347 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-10-15 17:01:47,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-10-15 17:01:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-10-15 17:01:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 17:01:47,349 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:47,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 17:01:47,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:01:47,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash 28698695, now seen corresponding path program 1 times [2022-10-15 17:01:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:47,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425563899] [2022-10-15 17:01:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:47,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425563899] [2022-10-15 17:01:47,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425563899] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:47,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:47,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:01:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977746417] [2022-10-15 17:01:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:01:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:01:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:01:47,496 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-15 17:01:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:47,519 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-10-15 17:01:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:01:47,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 17:01:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:47,522 INFO L225 Difference]: With dead ends: 17 [2022-10-15 17:01:47,522 INFO L226 Difference]: Without dead ends: 15 [2022-10-15 17:01:47,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:01:47,525 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:47,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-10-15 17:01:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-10-15 17:01:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-10-15 17:01:47,537 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 5 [2022-10-15 17:01:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:47,539 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-10-15 17:01:47,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-15 17:01:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-10-15 17:01:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:01:47,541 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:47,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:47,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:01:47,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash -180366952, now seen corresponding path program 1 times [2022-10-15 17:01:47,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:47,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089400562] [2022-10-15 17:01:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:47,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:47,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089400562] [2022-10-15 17:01:47,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089400562] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:47,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:47,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:01:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940824964] [2022-10-15 17:01:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:47,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:01:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:01:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:01:47,862 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-10-15 17:01:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:47,989 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-10-15 17:01:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:01:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 17:01:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:47,991 INFO L225 Difference]: With dead ends: 18 [2022-10-15 17:01:47,991 INFO L226 Difference]: Without dead ends: 18 [2022-10-15 17:01:47,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:01:47,994 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:47,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-15 17:01:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-10-15 17:01:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-10-15 17:01:48,002 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2022-10-15 17:01:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:48,003 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-10-15 17:01:48,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-10-15 17:01:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-10-15 17:01:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 17:01:48,004 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:48,004 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:48,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:01:48,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:48,005 INFO L85 PathProgramCache]: Analyzing trace with hash -303894894, now seen corresponding path program 1 times [2022-10-15 17:01:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:48,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035588617] [2022-10-15 17:01:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:48,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:01:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035588617] [2022-10-15 17:01:48,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035588617] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:48,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:48,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:01:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341096195] [2022-10-15 17:01:48,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:01:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:01:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:01:48,628 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-15 17:01:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:48,679 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-10-15 17:01:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:01:48,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 17:01:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:48,682 INFO L225 Difference]: With dead ends: 30 [2022-10-15 17:01:48,682 INFO L226 Difference]: Without dead ends: 30 [2022-10-15 17:01:48,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:01:48,684 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:48,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-15 17:01:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-10-15 17:01:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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) [2022-10-15 17:01:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-10-15 17:01:48,692 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 12 [2022-10-15 17:01:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:48,692 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-10-15 17:01:48,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-15 17:01:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-10-15 17:01:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:01:48,694 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:48,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:48,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:01:48,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:48,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1056396073, now seen corresponding path program 1 times [2022-10-15 17:01:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:48,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413526239] [2022-10-15 17:01:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:01:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:48,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413526239] [2022-10-15 17:01:48,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413526239] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415547763] [2022-10-15 17:01:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:48,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:48,986 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) [2022-10-15 17:01:48,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:01:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:49,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:01:49,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:01:49,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:01:49,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415547763] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:49,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:01:49,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-15 17:01:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559247729] [2022-10-15 17:01:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:49,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:01:49,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:01:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:01:49,105 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-10-15 17:01:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:49,193 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-10-15 17:01:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:01:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 17:01:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:49,198 INFO L225 Difference]: With dead ends: 52 [2022-10-15 17:01:49,198 INFO L226 Difference]: Without dead ends: 52 [2022-10-15 17:01:49,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:01:49,204 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:49,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 18 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-15 17:01:49,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 30. [2022-10-15 17:01:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-10-15 17:01:49,223 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 15 [2022-10-15 17:01:49,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:49,223 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-10-15 17:01:49,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-10-15 17:01:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-10-15 17:01:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 17:01:49,225 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:49,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:49,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 17:01:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:49,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1212980556, now seen corresponding path program 1 times [2022-10-15 17:01:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:49,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472641993] [2022-10-15 17:01:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:49,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:01:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:49,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472641993] [2022-10-15 17:01:49,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472641993] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:49,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187851422] [2022-10-15 17:01:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:49,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:49,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:49,639 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) [2022-10-15 17:01:49,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:01:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:49,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:01:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:01:49,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:01:49,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187851422] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:49,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:01:49,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-10-15 17:01:49,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701293457] [2022-10-15 17:01:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:49,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:01:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:01:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:01:49,733 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-10-15 17:01:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:49,825 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2022-10-15 17:01:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:01:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-15 17:01:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:49,827 INFO L225 Difference]: With dead ends: 50 [2022-10-15 17:01:49,827 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 17:01:49,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:01:49,828 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 88 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:49,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 16 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 17:01:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2022-10-15 17:01:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-10-15 17:01:49,835 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2022-10-15 17:01:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:49,835 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-10-15 17:01:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-10-15 17:01:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-10-15 17:01:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:01:49,836 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:49,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:49,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:50,050 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,SelfDestructingSolverStorable5 [2022-10-15 17:01:50,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:50,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1901462963, now seen corresponding path program 1 times [2022-10-15 17:01:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:50,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221348565] [2022-10-15 17:01:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:01:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:50,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221348565] [2022-10-15 17:01:50,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221348565] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:50,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762905586] [2022-10-15 17:01:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:50,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:50,291 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) [2022-10-15 17:01:50,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:01:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:50,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:01:50,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 17:01:50,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:01:50,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762905586] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:50,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:01:50,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-10-15 17:01:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90009765] [2022-10-15 17:01:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:50,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:01:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:01:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:01:50,402 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:50,497 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-10-15 17:01:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:01:50,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-15 17:01:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:50,499 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:01:50,500 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:01:50,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:01:50,501 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:50,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:01:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-10-15 17:01:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2022-10-15 17:01:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-10-15 17:01:50,507 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 21 [2022-10-15 17:01:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:50,507 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-10-15 17:01:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-10-15 17:01:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:01:50,508 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:50,508 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:50,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:50,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:50,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1208008852, now seen corresponding path program 1 times [2022-10-15 17:01:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:50,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358249282] [2022-10-15 17:01:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 17:01:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:51,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358249282] [2022-10-15 17:01:51,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358249282] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:51,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30167075] [2022-10-15 17:01:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:51,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:51,038 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) [2022-10-15 17:01:51,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:01:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:51,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 17:01:51,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 17:01:51,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 17:01:51,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30167075] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:51,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:51,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-10-15 17:01:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500161337] [2022-10-15 17:01:51,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:01:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:01:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:01:51,480 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 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) [2022-10-15 17:01:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:53,785 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2022-10-15 17:01:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-10-15 17:01:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-15 17:01:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:53,793 INFO L225 Difference]: With dead ends: 156 [2022-10-15 17:01:53,793 INFO L226 Difference]: Without dead ends: 111 [2022-10-15 17:01:53,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=509, Invalid=1843, Unknown=0, NotChecked=0, Total=2352 [2022-10-15 17:01:53,795 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 632 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:53,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 66 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:01:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-15 17:01:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2022-10-15 17:01:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 70 states have internal predecessors, (86), 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) [2022-10-15 17:01:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2022-10-15 17:01:53,804 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 27 [2022-10-15 17:01:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:53,805 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2022-10-15 17:01:53,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 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) [2022-10-15 17:01:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2022-10-15 17:01:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-15 17:01:53,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:53,807 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:53,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:54,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:54,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash -971666175, now seen corresponding path program 2 times [2022-10-15 17:01:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:54,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747621660] [2022-10-15 17:01:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:54,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-10-15 17:01:54,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:54,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747621660] [2022-10-15 17:01:54,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747621660] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:54,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52845962] [2022-10-15 17:01:54,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:01:54,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:54,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:54,511 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) [2022-10-15 17:01:54,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:01:54,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 17:01:54,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:54,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 17:01:54,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-15 17:01:54,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:01:54,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52845962] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:54,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:01:54,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-15 17:01:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972797062] [2022-10-15 17:01:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:54,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:01:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:01:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:01:54,713 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-10-15 17:01:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:54,746 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2022-10-15 17:01:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:01:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-10-15 17:01:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:54,749 INFO L225 Difference]: With dead ends: 71 [2022-10-15 17:01:54,749 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 17:01:54,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:01:54,750 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:54,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 17:01:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2022-10-15 17:01:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2022-10-15 17:01:54,757 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 48 [2022-10-15 17:01:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2022-10-15 17:01:54,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-10-15 17:01:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2022-10-15 17:01:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-15 17:01:54,759 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:54,760 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:54,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:54,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:54,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -414140084, now seen corresponding path program 3 times [2022-10-15 17:01:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870913405] [2022-10-15 17:01:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 17 proven. 64 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-10-15 17:01:55,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870913405] [2022-10-15 17:01:55,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870913405] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:55,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141941914] [2022-10-15 17:01:55,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:01:55,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:55,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:55,530 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) [2022-10-15 17:01:55,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:01:55,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-10-15 17:01:55,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:55,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 17:01:55,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-10-15 17:01:55,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:01:55,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141941914] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:55,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:01:55,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-15 17:01:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133621959] [2022-10-15 17:01:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:55,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:01:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:01:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:01:55,728 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:55,762 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2022-10-15 17:01:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:01:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-15 17:01:55,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:55,764 INFO L225 Difference]: With dead ends: 115 [2022-10-15 17:01:55,764 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 17:01:55,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:01:55,766 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 17:01:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2022-10-15 17:01:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 79 states have internal predecessors, (96), 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) [2022-10-15 17:01:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2022-10-15 17:01:55,774 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 63 [2022-10-15 17:01:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:55,774 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2022-10-15 17:01:55,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2022-10-15 17:01:55,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 17:01:55,776 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:55,776 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:55,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:55,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1648728410, now seen corresponding path program 4 times [2022-10-15 17:01:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:55,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202575123] [2022-10-15 17:01:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:55,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 20 proven. 83 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 17:01:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:56,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202575123] [2022-10-15 17:01:56,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202575123] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:56,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783116619] [2022-10-15 17:01:56,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:01:56,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:56,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:56,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:01:56,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:01:56,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:01:56,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:56,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:01:56,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 88 proven. 71 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-15 17:01:56,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 30 proven. 129 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-15 17:01:57,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783116619] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:57,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:57,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2022-10-15 17:01:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227006036] [2022-10-15 17:01:57,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 17:01:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 17:01:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:01:57,183 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 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) [2022-10-15 17:01:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:57,833 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2022-10-15 17:01:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:01:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-10-15 17:01:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:57,836 INFO L225 Difference]: With dead ends: 176 [2022-10-15 17:01:57,836 INFO L226 Difference]: Without dead ends: 120 [2022-10-15 17:01:57,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-10-15 17:01:57,837 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 136 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:57,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 79 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:01:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-15 17:01:57,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2022-10-15 17:01:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 109 states have internal predecessors, (126), 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) [2022-10-15 17:01:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2022-10-15 17:01:57,845 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 75 [2022-10-15 17:01:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2022-10-15 17:01:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 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) [2022-10-15 17:01:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2022-10-15 17:01:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-15 17:01:57,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:57,848 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:57,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:58,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:58,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1372721946, now seen corresponding path program 5 times [2022-10-15 17:01:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471834200] [2022-10-15 17:01:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 20 proven. 270 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2022-10-15 17:01:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:58,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471834200] [2022-10-15 17:01:58,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471834200] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:58,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133822046] [2022-10-15 17:01:58,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:01:58,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:58,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:58,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:01:59,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:01:59,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-10-15 17:01:59,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:59,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 17:01:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 438 proven. 84 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-10-15 17:01:59,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 420 proven. 102 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-10-15 17:02:00,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133822046] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:00,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:00,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2022-10-15 17:02:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504854994] [2022-10-15 17:02:00,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:00,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 17:02:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 17:02:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-10-15 17:02:00,188 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 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) [2022-10-15 17:02:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:01,857 INFO L93 Difference]: Finished difference Result 409 states and 446 transitions. [2022-10-15 17:02:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 17:02:01,857 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-10-15 17:02:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:01,859 INFO L225 Difference]: With dead ends: 409 [2022-10-15 17:02:01,859 INFO L226 Difference]: Without dead ends: 330 [2022-10-15 17:02:01,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=308, Invalid=1584, Unknown=0, NotChecked=0, Total=1892 [2022-10-15 17:02:01,861 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 284 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:01,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 58 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:02:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-10-15 17:02:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 231. [2022-10-15 17:02:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.1) internal successors, (253), 230 states have internal predecessors, (253), 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) [2022-10-15 17:02:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 253 transitions. [2022-10-15 17:02:01,874 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 253 transitions. Word has length 105 [2022-10-15 17:02:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:01,875 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 253 transitions. [2022-10-15 17:02:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 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) [2022-10-15 17:02:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 253 transitions. [2022-10-15 17:02:01,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-10-15 17:02:01,879 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:01,879 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 55, 11, 10, 10, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:01,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:02:02,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 17:02:02,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1843530466, now seen corresponding path program 6 times [2022-10-15 17:02:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:02,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415197076] [2022-10-15 17:02:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5368 backedges. 26 proven. 950 refuted. 0 times theorem prover too weak. 4392 trivial. 0 not checked. [2022-10-15 17:02:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415197076] [2022-10-15 17:02:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415197076] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631215299] [2022-10-15 17:02:03,844 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:02:03,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:03,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:03,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:02:03,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-10-15 17:02:03,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:02:03,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 17:02:03,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5368 backedges. 2703 proven. 540 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2022-10-15 17:02:04,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5368 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2022-10-15 17:02:04,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631215299] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:04,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:04,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-10-15 17:02:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762389913] [2022-10-15 17:02:04,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:04,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:02:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:02:04,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:02:04,919 INFO L87 Difference]: Start difference. First operand 231 states and 253 transitions. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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) [2022-10-15 17:02:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:07,178 INFO L93 Difference]: Finished difference Result 1213 states and 1291 transitions. [2022-10-15 17:02:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-15 17:02:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2022-10-15 17:02:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:07,187 INFO L225 Difference]: With dead ends: 1213 [2022-10-15 17:02:07,187 INFO L226 Difference]: Without dead ends: 1213 [2022-10-15 17:02:07,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=705, Invalid=2265, Unknown=0, NotChecked=0, Total=2970 [2022-10-15 17:02:07,192 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 263 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:07,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 65 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:02:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-10-15 17:02:07,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 603. [2022-10-15 17:02:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.0714285714285714) internal successors, (645), 602 states have internal predecessors, (645), 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) [2022-10-15 17:02:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 645 transitions. [2022-10-15 17:02:07,229 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 645 transitions. Word has length 228 [2022-10-15 17:02:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:07,229 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 645 transitions. [2022-10-15 17:02:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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) [2022-10-15 17:02:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 645 transitions. [2022-10-15 17:02:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-10-15 17:02:07,252 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:07,252 INFO L195 NwaCegarLoop]: trace histogram [162, 161, 161, 23, 22, 22, 11, 10, 10, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:07,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:02:07,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:02:07,469 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash 265720766, now seen corresponding path program 7 times [2022-10-15 17:02:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226298001] [2022-10-15 17:02:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 43666 backedges. 50 proven. 3795 refuted. 0 times theorem prover too weak. 39821 trivial. 0 not checked. [2022-10-15 17:02:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:12,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226298001] [2022-10-15 17:02:12,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226298001] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:12,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413557088] [2022-10-15 17:02:12,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:02:12,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:12,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:12,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:12,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:02:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:12,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:02:12,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 43666 backedges. 6966 proven. 206 refuted. 0 times theorem prover too weak. 36494 trivial. 0 not checked. [2022-10-15 17:02:13,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43666 backedges. 6966 proven. 206 refuted. 0 times theorem prover too weak. 36494 trivial. 0 not checked. [2022-10-15 17:02:13,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413557088] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:13,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:13,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2022-10-15 17:02:13,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270444718] [2022-10-15 17:02:13,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-15 17:02:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-15 17:02:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-10-15 17:02:13,591 INFO L87 Difference]: Start difference. First operand 603 states and 645 transitions. Second operand has 27 states, 27 states have (on average 3.962962962962963) internal successors, (107), 27 states have internal predecessors, (107), 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) [2022-10-15 17:02:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:22,660 INFO L93 Difference]: Finished difference Result 2362 states and 2480 transitions. [2022-10-15 17:02:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-10-15 17:02:22,660 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.962962962962963) internal successors, (107), 27 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2022-10-15 17:02:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:22,670 INFO L225 Difference]: With dead ends: 2362 [2022-10-15 17:02:22,670 INFO L226 Difference]: Without dead ends: 2362 [2022-10-15 17:02:22,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1187 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3302 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1583, Invalid=8719, Unknown=0, NotChecked=0, Total=10302 [2022-10-15 17:02:22,676 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 649 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:22,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 75 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-15 17:02:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-10-15 17:02:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2132. [2022-10-15 17:02:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2131 states have (on average 1.040356640075082) internal successors, (2217), 2131 states have internal predecessors, (2217), 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) [2022-10-15 17:02:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2217 transitions. [2022-10-15 17:02:22,720 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2217 transitions. Word has length 600 [2022-10-15 17:02:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:22,720 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 2217 transitions. [2022-10-15 17:02:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.962962962962963) internal successors, (107), 27 states have internal predecessors, (107), 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) [2022-10-15 17:02:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2217 transitions. [2022-10-15 17:02:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2128 [2022-10-15 17:02:22,788 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:22,789 INFO L195 NwaCegarLoop]: trace histogram [628, 627, 627, 66, 65, 65, 11, 10, 10, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:22,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:02:22,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 17:02:22,990 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:22,992 INFO L85 PathProgramCache]: Analyzing trace with hash 306642997, now seen corresponding path program 8 times [2022-10-15 17:02:22,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:22,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478054700] [2022-10-15 17:02:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:22,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat