/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/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 00:43:17,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 00:43:17,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 00:43:17,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 00:43:17,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 00:43:17,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 00:43:17,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 00:43:17,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 00:43:17,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 00:43:17,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 00:43:17,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 00:43:17,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 00:43:17,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 00:43:17,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 00:43:17,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 00:43:17,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 00:43:17,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 00:43:17,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 00:43:17,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 00:43:17,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 00:43:17,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 00:43:17,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 00:43:17,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 00:43:17,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 00:43:17,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 00:43:17,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 00:43:17,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 00:43:17,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 00:43:17,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 00:43:17,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 00:43:17,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 00:43:17,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 00:43:17,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 00:43:17,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 00:43:17,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 00:43:17,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 00:43:17,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 00:43:17,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 00:43:17,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 00:43:17,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 00:43:17,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 00:43:17,852 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 [2022-10-16 00:43:17,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 00:43:17,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 00:43:17,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 00:43:17,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 00:43:17,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 00:43:17,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 00:43:17,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 00:43:17,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 00:43:17,917 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 00:43:17,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 00:43:17,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 00:43:17,919 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 00:43:17,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 00:43:17,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 00:43:17,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 00:43:17,920 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 00:43:17,920 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 00:43:17,920 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 00:43:17,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 00:43:17,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 00:43:17,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 00:43:17,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 00:43:17,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 00:43:17,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 00:43:17,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 00:43:17,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:43:17,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 00:43:17,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 00:43:17,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 00:43:17,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 00:43:17,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 00:43:18,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 00:43:18,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 00:43:18,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 00:43:18,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 00:43:18,352 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 00:43:18,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-10-16 00:43:18,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86acd4a2f/429aef1de7b3420eadb6dba1caf524ca/FLAG1817814e3 [2022-10-16 00:43:19,157 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 00:43:19,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-10-16 00:43:19,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86acd4a2f/429aef1de7b3420eadb6dba1caf524ca/FLAG1817814e3 [2022-10-16 00:43:19,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86acd4a2f/429aef1de7b3420eadb6dba1caf524ca [2022-10-16 00:43:19,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 00:43:19,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 00:43:19,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 00:43:19,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 00:43:19,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 00:43:19,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:19,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa366e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19, skipping insertion in model container [2022-10-16 00:43:19,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:19,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 00:43:19,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 00:43:19,718 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/bitvector/soft_float_5a.c.cil.c[728,741] [2022-10-16 00:43:19,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:43:19,868 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 00:43:19,885 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/bitvector/soft_float_5a.c.cil.c[728,741] [2022-10-16 00:43:19,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:43:19,944 INFO L208 MainTranslator]: Completed translation [2022-10-16 00:43:19,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19 WrapperNode [2022-10-16 00:43:19,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 00:43:19,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 00:43:19,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 00:43:19,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 00:43:19,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:19,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,008 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2022-10-16 00:43:20,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 00:43:20,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 00:43:20,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 00:43:20,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 00:43:20,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,047 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 00:43:20,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 00:43:20,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 00:43:20,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 00:43:20,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (1/1) ... [2022-10-16 00:43:20,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:43:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:20,100 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) [2022-10-16 00:43:20,123 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 [2022-10-16 00:43:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 00:43:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 00:43:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-16 00:43:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-16 00:43:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 00:43:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 00:43:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-16 00:43:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-16 00:43:20,273 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 00:43:20,276 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 00:43:20,840 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 00:43:20,850 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 00:43:20,851 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 00:43:20,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:43:20 BoogieIcfgContainer [2022-10-16 00:43:20,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 00:43:20,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 00:43:20,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 00:43:20,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 00:43:20,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:43:19" (1/3) ... [2022-10-16 00:43:20,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc94c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:43:20, skipping insertion in model container [2022-10-16 00:43:20,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19" (2/3) ... [2022-10-16 00:43:20,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc94c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:43:20, skipping insertion in model container [2022-10-16 00:43:20,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:43:20" (3/3) ... [2022-10-16 00:43:20,865 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-10-16 00:43:20,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 00:43:20,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 00:43:20,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 00:43:20,991 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;@594f761c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 00:43:20,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 00:43:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 79 states have (on average 1.7215189873417722) internal successors, (136), 82 states have internal predecessors, (136), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 00:43:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 00:43:21,015 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:21,016 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:21,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1542961432, now seen corresponding path program 1 times [2022-10-16 00:43:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:21,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82792091] [2022-10-16 00:43:21,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 00:43:21,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:21,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82792091] [2022-10-16 00:43:21,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82792091] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:21,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:21,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 00:43:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592811674] [2022-10-16 00:43:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:21,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:43:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:43:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:21,524 INFO L87 Difference]: Start difference. First operand has 89 states, 79 states have (on average 1.7215189873417722) internal successors, (136), 82 states have internal predecessors, (136), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:21,612 INFO L93 Difference]: Finished difference Result 96 states and 145 transitions. [2022-10-16 00:43:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:43:21,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2022-10-16 00:43:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:21,643 INFO L225 Difference]: With dead ends: 96 [2022-10-16 00:43:21,644 INFO L226 Difference]: Without dead ends: 90 [2022-10-16 00:43:21,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:21,652 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 104 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:21,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 253 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-16 00:43:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-16 00:43:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.52) internal successors, (114), 75 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 00:43:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 123 transitions. [2022-10-16 00:43:21,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 123 transitions. Word has length 39 [2022-10-16 00:43:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:21,725 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 123 transitions. [2022-10-16 00:43:21,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 123 transitions. [2022-10-16 00:43:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 00:43:21,729 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:21,729 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:21,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 00:43:21,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:21,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2094957940, now seen corresponding path program 1 times [2022-10-16 00:43:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:21,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223727414] [2022-10-16 00:43:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 00:43:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223727414] [2022-10-16 00:43:21,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223727414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:21,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:21,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 00:43:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596652271] [2022-10-16 00:43:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:43:21,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:43:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:21,998 INFO L87 Difference]: Start difference. First operand 82 states and 123 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:22,066 INFO L93 Difference]: Finished difference Result 130 states and 198 transitions. [2022-10-16 00:43:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:43:22,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-10-16 00:43:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:22,070 INFO L225 Difference]: With dead ends: 130 [2022-10-16 00:43:22,070 INFO L226 Difference]: Without dead ends: 90 [2022-10-16 00:43:22,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:22,073 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 90 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:22,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 326 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-16 00:43:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-16 00:43:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 75 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 00:43:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 122 transitions. [2022-10-16 00:43:22,099 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 122 transitions. Word has length 42 [2022-10-16 00:43:22,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:22,100 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 122 transitions. [2022-10-16 00:43:22,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 122 transitions. [2022-10-16 00:43:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 00:43:22,103 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:22,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:22,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 00:43:22,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:22,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1177604186, now seen corresponding path program 1 times [2022-10-16 00:43:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:22,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710333304] [2022-10-16 00:43:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 00:43:22,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:22,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710333304] [2022-10-16 00:43:22,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710333304] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:22,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:22,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:43:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719146453] [2022-10-16 00:43:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:43:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:43:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:43:22,326 INFO L87 Difference]: Start difference. First operand 82 states and 122 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:22,399 INFO L93 Difference]: Finished difference Result 131 states and 198 transitions. [2022-10-16 00:43:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:43:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-10-16 00:43:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:22,403 INFO L225 Difference]: With dead ends: 131 [2022-10-16 00:43:22,403 INFO L226 Difference]: Without dead ends: 90 [2022-10-16 00:43:22,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:43:22,406 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 151 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:22,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 437 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-16 00:43:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-16 00:43:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 75 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 00:43:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 121 transitions. [2022-10-16 00:43:22,421 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 121 transitions. Word has length 44 [2022-10-16 00:43:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:22,422 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 121 transitions. [2022-10-16 00:43:22,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 121 transitions. [2022-10-16 00:43:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 00:43:22,446 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:22,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 00:43:22,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1764410200, now seen corresponding path program 1 times [2022-10-16 00:43:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844158120] [2022-10-16 00:43:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 00:43:22,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:22,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844158120] [2022-10-16 00:43:22,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844158120] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795705504] [2022-10-16 00:43:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:22,638 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) [2022-10-16 00:43:22,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 00:43:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:22,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 00:43:22,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:43:22,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 00:43:23,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795705504] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:23,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:43:23,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 9] total 16 [2022-10-16 00:43:23,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751514165] [2022-10-16 00:43:23,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:23,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 00:43:23,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:23,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 00:43:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-10-16 00:43:23,213 INFO L87 Difference]: Start difference. First operand 82 states and 121 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:23,347 INFO L93 Difference]: Finished difference Result 133 states and 197 transitions. [2022-10-16 00:43:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:43:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-10-16 00:43:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:23,351 INFO L225 Difference]: With dead ends: 133 [2022-10-16 00:43:23,351 INFO L226 Difference]: Without dead ends: 133 [2022-10-16 00:43:23,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:43:23,353 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 129 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:23,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 668 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-10-16 00:43:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2022-10-16 00:43:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 122 states have (on average 1.4754098360655739) internal successors, (180), 122 states have internal predecessors, (180), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 00:43:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 193 transitions. [2022-10-16 00:43:23,372 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 193 transitions. Word has length 44 [2022-10-16 00:43:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:23,373 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 193 transitions. [2022-10-16 00:43:23,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 193 transitions. [2022-10-16 00:43:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 00:43:23,376 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:23,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:23,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:23,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:23,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1705819630, now seen corresponding path program 1 times [2022-10-16 00:43:23,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:23,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125302819] [2022-10-16 00:43:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:23,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:23,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 00:43:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:23,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125302819] [2022-10-16 00:43:23,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125302819] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:23,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859631946] [2022-10-16 00:43:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:23,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:23,786 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) [2022-10-16 00:43:23,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 00:43:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:23,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 00:43:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 00:43:23,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 00:43:24,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859631946] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:24,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:43:24,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 13 [2022-10-16 00:43:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882313176] [2022-10-16 00:43:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:24,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:43:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:43:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 00:43:24,104 INFO L87 Difference]: Start difference. First operand 130 states and 193 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:24,178 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2022-10-16 00:43:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:43:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-10-16 00:43:24,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:24,182 INFO L225 Difference]: With dead ends: 141 [2022-10-16 00:43:24,182 INFO L226 Difference]: Without dead ends: 141 [2022-10-16 00:43:24,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-10-16 00:43:24,185 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 16 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:24,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 461 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-10-16 00:43:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2022-10-16 00:43:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 131 states have (on average 1.450381679389313) internal successors, (190), 131 states have internal predecessors, (190), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 00:43:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 203 transitions. [2022-10-16 00:43:24,220 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 203 transitions. Word has length 46 [2022-10-16 00:43:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:24,224 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 203 transitions. [2022-10-16 00:43:24,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:24,225 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 203 transitions. [2022-10-16 00:43:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 00:43:24,226 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:24,227 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:24,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:24,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:24,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:24,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1763077932, now seen corresponding path program 1 times [2022-10-16 00:43:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:24,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107222908] [2022-10-16 00:43:24,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 00:43:24,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:24,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107222908] [2022-10-16 00:43:24,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107222908] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:24,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:24,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 00:43:24,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398040472] [2022-10-16 00:43:24,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:24,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 00:43:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 00:43:24,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:43:24,622 INFO L87 Difference]: Start difference. First operand 139 states and 203 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:24,699 INFO L93 Difference]: Finished difference Result 151 states and 221 transitions. [2022-10-16 00:43:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:43:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-10-16 00:43:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:24,707 INFO L225 Difference]: With dead ends: 151 [2022-10-16 00:43:24,707 INFO L226 Difference]: Without dead ends: 142 [2022-10-16 00:43:24,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:43:24,719 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 38 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:24,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 662 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-10-16 00:43:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2022-10-16 00:43:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 126 states have (on average 1.4365079365079365) internal successors, (181), 126 states have internal predecessors, (181), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 00:43:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 194 transitions. [2022-10-16 00:43:24,751 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 194 transitions. Word has length 46 [2022-10-16 00:43:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:24,752 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 194 transitions. [2022-10-16 00:43:24,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 194 transitions. [2022-10-16 00:43:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-16 00:43:24,754 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:24,754 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:24,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 00:43:24,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:24,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1384261465, now seen corresponding path program 1 times [2022-10-16 00:43:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:24,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073418998] [2022-10-16 00:43:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 00:43:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:24,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073418998] [2022-10-16 00:43:24,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073418998] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:24,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737227816] [2022-10-16 00:43:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:24,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:24,891 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) [2022-10-16 00:43:24,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 00:43:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:24,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 00:43:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 00:43:25,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 00:43:25,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737227816] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:25,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:25,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2022-10-16 00:43:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255287875] [2022-10-16 00:43:25,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:25,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 00:43:25,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:25,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 00:43:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:43:25,243 INFO L87 Difference]: Start difference. First operand 134 states and 194 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-16 00:43:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:26,425 INFO L93 Difference]: Finished difference Result 432 states and 688 transitions. [2022-10-16 00:43:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 00:43:26,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 48 [2022-10-16 00:43:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:26,430 INFO L225 Difference]: With dead ends: 432 [2022-10-16 00:43:26,431 INFO L226 Difference]: Without dead ends: 423 [2022-10-16 00:43:26,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1555, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 00:43:26,433 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 539 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:26,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 853 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 00:43:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-10-16 00:43:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 173. [2022-10-16 00:43:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 159 states have (on average 1.4465408805031446) internal successors, (230), 160 states have internal predecessors, (230), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2022-10-16 00:43:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 261 transitions. [2022-10-16 00:43:26,465 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 261 transitions. Word has length 48 [2022-10-16 00:43:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:26,465 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 261 transitions. [2022-10-16 00:43:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-16 00:43:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 261 transitions. [2022-10-16 00:43:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 00:43:26,468 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:26,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:26,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:26,683 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 [2022-10-16 00:43:26,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1172805408, now seen corresponding path program 1 times [2022-10-16 00:43:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:26,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508263675] [2022-10-16 00:43:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:26,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 00:43:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 00:43:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 00:43:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 00:43:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:26,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508263675] [2022-10-16 00:43:26,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508263675] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:26,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974870601] [2022-10-16 00:43:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:26,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:26,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:26,822 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) [2022-10-16 00:43:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 00:43:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:26,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 00:43:26,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 00:43:26,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:26,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974870601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:26,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:26,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-10-16 00:43:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571826875] [2022-10-16 00:43:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:26,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:43:26,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:43:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:43:26,941 INFO L87 Difference]: Start difference. First operand 173 states and 261 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:27,003 INFO L93 Difference]: Finished difference Result 189 states and 293 transitions. [2022-10-16 00:43:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:43:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-10-16 00:43:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:27,006 INFO L225 Difference]: With dead ends: 189 [2022-10-16 00:43:27,006 INFO L226 Difference]: Without dead ends: 189 [2022-10-16 00:43:27,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 00:43:27,007 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 27 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:27,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 298 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-16 00:43:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2022-10-16 00:43:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 164 states have internal predecessors, (234), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2022-10-16 00:43:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 269 transitions. [2022-10-16 00:43:27,020 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 269 transitions. Word has length 55 [2022-10-16 00:43:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:27,021 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 269 transitions. [2022-10-16 00:43:27,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 269 transitions. [2022-10-16 00:43:27,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 00:43:27,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:27,023 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:27,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:27,236 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 [2022-10-16 00:43:27,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash -409387079, now seen corresponding path program 1 times [2022-10-16 00:43:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:27,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177110707] [2022-10-16 00:43:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 00:43:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 00:43:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 00:43:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 00:43:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177110707] [2022-10-16 00:43:27,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177110707] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3787192] [2022-10-16 00:43:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:27,352 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) [2022-10-16 00:43:27,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 00:43:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 00:43:27,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 00:43:27,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:27,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3787192] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:27,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:27,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-10-16 00:43:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296376922] [2022-10-16 00:43:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:27,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 00:43:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 00:43:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:27,448 INFO L87 Difference]: Start difference. First operand 177 states and 269 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:27,488 INFO L93 Difference]: Finished difference Result 193 states and 300 transitions. [2022-10-16 00:43:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 00:43:27,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-10-16 00:43:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:27,491 INFO L225 Difference]: With dead ends: 193 [2022-10-16 00:43:27,491 INFO L226 Difference]: Without dead ends: 193 [2022-10-16 00:43:27,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:27,493 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 10 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:27,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 216 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-10-16 00:43:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2022-10-16 00:43:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.4417177914110428) internal successors, (235), 165 states have internal predecessors, (235), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2022-10-16 00:43:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 270 transitions. [2022-10-16 00:43:27,504 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 270 transitions. Word has length 57 [2022-10-16 00:43:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:27,504 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 270 transitions. [2022-10-16 00:43:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 270 transitions. [2022-10-16 00:43:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 00:43:27,506 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:27,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:27,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:27,720 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 [2022-10-16 00:43:27,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 684341238, now seen corresponding path program 1 times [2022-10-16 00:43:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:27,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115818301] [2022-10-16 00:43:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 00:43:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 00:43:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 00:43:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:27,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115818301] [2022-10-16 00:43:27,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115818301] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:27,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772208559] [2022-10-16 00:43:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:27,833 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) [2022-10-16 00:43:27,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 00:43:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:27,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 00:43:27,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 00:43:27,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:27,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772208559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:27,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:27,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-10-16 00:43:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783626144] [2022-10-16 00:43:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:43:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:43:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:43:27,947 INFO L87 Difference]: Start difference. First operand 178 states and 270 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:28,019 INFO L93 Difference]: Finished difference Result 205 states and 312 transitions. [2022-10-16 00:43:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:43:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-10-16 00:43:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:28,022 INFO L225 Difference]: With dead ends: 205 [2022-10-16 00:43:28,023 INFO L226 Difference]: Without dead ends: 202 [2022-10-16 00:43:28,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 00:43:28,024 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 28 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:28,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 308 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-10-16 00:43:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2022-10-16 00:43:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 182 states have (on average 1.445054945054945) internal successors, (263), 186 states have internal predecessors, (263), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 00:43:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 303 transitions. [2022-10-16 00:43:28,040 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 303 transitions. Word has length 58 [2022-10-16 00:43:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:28,040 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 303 transitions. [2022-10-16 00:43:28,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 303 transitions. [2022-10-16 00:43:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-16 00:43:28,043 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:28,043 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:28,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:28,256 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 [2022-10-16 00:43:28,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash -390928303, now seen corresponding path program 1 times [2022-10-16 00:43:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:28,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282322125] [2022-10-16 00:43:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:28,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 00:43:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 00:43:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 00:43:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:28,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282322125] [2022-10-16 00:43:28,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282322125] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:28,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603173023] [2022-10-16 00:43:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:28,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:28,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:28,382 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) [2022-10-16 00:43:28,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 00:43:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:28,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 00:43:28,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 00:43:28,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 00:43:28,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603173023] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:28,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:28,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 00:43:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913563947] [2022-10-16 00:43:28,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:28,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 00:43:28,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 00:43:28,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:43:28,620 INFO L87 Difference]: Start difference. First operand 199 states and 303 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 00:43:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:28,970 INFO L93 Difference]: Finished difference Result 341 states and 571 transitions. [2022-10-16 00:43:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 00:43:28,971 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2022-10-16 00:43:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:28,975 INFO L225 Difference]: With dead ends: 341 [2022-10-16 00:43:28,975 INFO L226 Difference]: Without dead ends: 341 [2022-10-16 00:43:28,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2022-10-16 00:43:28,976 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 471 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:28,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 621 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:43:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-10-16 00:43:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 208. [2022-10-16 00:43:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 191 states have (on average 1.455497382198953) internal successors, (278), 195 states have internal predecessors, (278), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 00:43:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 318 transitions. [2022-10-16 00:43:28,994 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 318 transitions. Word has length 61 [2022-10-16 00:43:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:28,995 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 318 transitions. [2022-10-16 00:43:28,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 00:43:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 318 transitions. [2022-10-16 00:43:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-16 00:43:28,997 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:28,997 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:29,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:29,211 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 [2022-10-16 00:43:29,212 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:29,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:29,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1588387638, now seen corresponding path program 1 times [2022-10-16 00:43:29,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523770142] [2022-10-16 00:43:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:29,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 00:43:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 00:43:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-16 00:43:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 00:43:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:29,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523770142] [2022-10-16 00:43:29,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523770142] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:29,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577145362] [2022-10-16 00:43:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:29,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:29,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:29,405 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) [2022-10-16 00:43:29,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 00:43:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:29,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 00:43:29,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 00:43:29,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 00:43:29,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577145362] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:29,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:29,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 00:43:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908285074] [2022-10-16 00:43:29,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:29,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 00:43:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 00:43:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:43:29,593 INFO L87 Difference]: Start difference. First operand 208 states and 318 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 00:43:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:29,986 INFO L93 Difference]: Finished difference Result 455 states and 742 transitions. [2022-10-16 00:43:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 00:43:29,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2022-10-16 00:43:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:29,991 INFO L225 Difference]: With dead ends: 455 [2022-10-16 00:43:29,991 INFO L226 Difference]: Without dead ends: 433 [2022-10-16 00:43:29,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650 [2022-10-16 00:43:29,992 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 383 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:29,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 673 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:43:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-10-16 00:43:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 241. [2022-10-16 00:43:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 224 states have (on average 1.4776785714285714) internal successors, (331), 228 states have internal predecessors, (331), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 00:43:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 371 transitions. [2022-10-16 00:43:30,015 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 371 transitions. Word has length 62 [2022-10-16 00:43:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:30,015 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 371 transitions. [2022-10-16 00:43:30,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 00:43:30,016 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 371 transitions. [2022-10-16 00:43:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-16 00:43:30,018 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:30,018 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:30,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:30,234 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 [2022-10-16 00:43:30,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1074228889, now seen corresponding path program 1 times [2022-10-16 00:43:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:30,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447036165] [2022-10-16 00:43:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 00:43:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 00:43:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 00:43:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 00:43:30,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:30,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447036165] [2022-10-16 00:43:30,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447036165] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:30,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526693010] [2022-10-16 00:43:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:30,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:30,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:30,541 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) [2022-10-16 00:43:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 00:43:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:30,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:43:30,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 00:43:30,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:30,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526693010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:30,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:30,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-10-16 00:43:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355867413] [2022-10-16 00:43:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:30,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:43:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:43:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:43:30,675 INFO L87 Difference]: Start difference. First operand 241 states and 371 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:30,897 INFO L93 Difference]: Finished difference Result 308 states and 475 transitions. [2022-10-16 00:43:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:43:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2022-10-16 00:43:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:30,901 INFO L225 Difference]: With dead ends: 308 [2022-10-16 00:43:30,901 INFO L226 Difference]: Without dead ends: 288 [2022-10-16 00:43:30,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:43:30,902 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 49 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:30,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 404 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:43:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-10-16 00:43:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 253. [2022-10-16 00:43:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 236 states have (on average 1.4745762711864407) internal successors, (348), 240 states have internal predecessors, (348), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 00:43:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 388 transitions. [2022-10-16 00:43:30,915 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 388 transitions. Word has length 67 [2022-10-16 00:43:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:30,916 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 388 transitions. [2022-10-16 00:43:30,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 388 transitions. [2022-10-16 00:43:30,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 00:43:30,918 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:30,918 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:30,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:31,133 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 [2022-10-16 00:43:31,133 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1183354193, now seen corresponding path program 1 times [2022-10-16 00:43:31,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:31,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634899295] [2022-10-16 00:43:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 00:43:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 00:43:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 00:43:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:31,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634899295] [2022-10-16 00:43:31,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634899295] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:31,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862338611] [2022-10-16 00:43:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:31,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:31,463 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) [2022-10-16 00:43:31,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 00:43:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:31,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 00:43:31,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 00:43:31,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:31,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862338611] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:31,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:31,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-10-16 00:43:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652896301] [2022-10-16 00:43:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:31,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:43:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:43:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:43:31,636 INFO L87 Difference]: Start difference. First operand 253 states and 388 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:31,784 INFO L93 Difference]: Finished difference Result 280 states and 434 transitions. [2022-10-16 00:43:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 00:43:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-10-16 00:43:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:31,787 INFO L225 Difference]: With dead ends: 280 [2022-10-16 00:43:31,787 INFO L226 Difference]: Without dead ends: 280 [2022-10-16 00:43:31,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-16 00:43:31,788 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 31 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:31,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 391 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:31,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-10-16 00:43:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 249. [2022-10-16 00:43:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 232 states have (on average 1.4698275862068966) internal successors, (341), 236 states have internal predecessors, (341), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 00:43:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 381 transitions. [2022-10-16 00:43:31,800 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 381 transitions. Word has length 70 [2022-10-16 00:43:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:31,800 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 381 transitions. [2022-10-16 00:43:31,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 00:43:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 381 transitions. [2022-10-16 00:43:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 00:43:31,803 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:31,803 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:31,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:32,016 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 [2022-10-16 00:43:32,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1748393057, now seen corresponding path program 1 times [2022-10-16 00:43:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:32,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757692360] [2022-10-16 00:43:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:32,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 00:43:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-16 00:43:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757692360] [2022-10-16 00:43:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757692360] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:32,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:32,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 00:43:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002711434] [2022-10-16 00:43:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:43:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:43:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:32,149 INFO L87 Difference]: Start difference. First operand 249 states and 381 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:32,198 INFO L93 Difference]: Finished difference Result 315 states and 480 transitions. [2022-10-16 00:43:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:43:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2022-10-16 00:43:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:32,201 INFO L225 Difference]: With dead ends: 315 [2022-10-16 00:43:32,201 INFO L226 Difference]: Without dead ends: 305 [2022-10-16 00:43:32,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:32,202 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 50 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:32,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 302 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-10-16 00:43:32,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 251. [2022-10-16 00:43:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 234 states have (on average 1.4572649572649572) internal successors, (341), 238 states have internal predecessors, (341), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 00:43:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 381 transitions. [2022-10-16 00:43:32,214 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 381 transitions. Word has length 73 [2022-10-16 00:43:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:32,214 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 381 transitions. [2022-10-16 00:43:32,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 381 transitions. [2022-10-16 00:43:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 00:43:32,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:32,217 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:32,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 00:43:32,217 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:32,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1919497254, now seen corresponding path program 1 times [2022-10-16 00:43:32,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:32,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668051723] [2022-10-16 00:43:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:32,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 00:43:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 00:43:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:32,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668051723] [2022-10-16 00:43:32,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668051723] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:32,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276483006] [2022-10-16 00:43:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:32,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:32,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:32,459 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:32,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 00:43:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:32,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 00:43:32,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 00:43:32,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:32,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276483006] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:32,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:32,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-10-16 00:43:32,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952248861] [2022-10-16 00:43:32,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:32,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 00:43:32,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 00:43:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:43:32,887 INFO L87 Difference]: Start difference. First operand 251 states and 381 transitions. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 00:43:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:33,924 INFO L93 Difference]: Finished difference Result 293 states and 428 transitions. [2022-10-16 00:43:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 00:43:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-10-16 00:43:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:33,927 INFO L225 Difference]: With dead ends: 293 [2022-10-16 00:43:33,927 INFO L226 Difference]: Without dead ends: 244 [2022-10-16 00:43:33,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2022-10-16 00:43:33,929 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 444 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:33,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 682 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 00:43:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-10-16 00:43:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 135. [2022-10-16 00:43:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 126 states have (on average 1.4682539682539681) internal successors, (185), 126 states have internal predecessors, (185), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 00:43:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 198 transitions. [2022-10-16 00:43:33,939 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 198 transitions. Word has length 73 [2022-10-16 00:43:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:33,940 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 198 transitions. [2022-10-16 00:43:33,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 00:43:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 198 transitions. [2022-10-16 00:43:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 00:43:33,941 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:33,942 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:33,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:34,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 00:43:34,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1038905424, now seen corresponding path program 1 times [2022-10-16 00:43:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:34,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126086177] [2022-10-16 00:43:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:34,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 00:43:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 00:43:34,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:34,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126086177] [2022-10-16 00:43:34,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126086177] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:34,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:34,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 00:43:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203555228] [2022-10-16 00:43:34,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:34,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 00:43:34,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 00:43:34,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 00:43:34,343 INFO L87 Difference]: Start difference. First operand 135 states and 198 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:34,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:34,462 INFO L93 Difference]: Finished difference Result 196 states and 288 transitions. [2022-10-16 00:43:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 00:43:34,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-10-16 00:43:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:34,465 INFO L225 Difference]: With dead ends: 196 [2022-10-16 00:43:34,466 INFO L226 Difference]: Without dead ends: 189 [2022-10-16 00:43:34,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:43:34,467 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 82 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:34,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 813 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-16 00:43:34,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 141. [2022-10-16 00:43:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 130 states have (on average 1.4538461538461538) internal successors, (189), 132 states have internal predecessors, (189), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-16 00:43:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 204 transitions. [2022-10-16 00:43:34,477 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 204 transitions. Word has length 76 [2022-10-16 00:43:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:34,478 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 204 transitions. [2022-10-16 00:43:34,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 204 transitions. [2022-10-16 00:43:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-16 00:43:34,480 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:34,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:34,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 00:43:34,480 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash 343791455, now seen corresponding path program 1 times [2022-10-16 00:43:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:34,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303572595] [2022-10-16 00:43:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:34,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 00:43:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 00:43:34,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:34,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303572595] [2022-10-16 00:43:34,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303572595] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:34,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:34,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 00:43:34,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051003827] [2022-10-16 00:43:34,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:34,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:43:34,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:43:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:34,583 INFO L87 Difference]: Start difference. First operand 141 states and 204 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:34,630 INFO L93 Difference]: Finished difference Result 165 states and 241 transitions. [2022-10-16 00:43:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:43:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2022-10-16 00:43:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:34,632 INFO L225 Difference]: With dead ends: 165 [2022-10-16 00:43:34,633 INFO L226 Difference]: Without dead ends: 160 [2022-10-16 00:43:34,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:43:34,634 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 35 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:34,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 305 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-10-16 00:43:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 141. [2022-10-16 00:43:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 130 states have (on average 1.4461538461538461) internal successors, (188), 132 states have internal predecessors, (188), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-16 00:43:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 203 transitions. [2022-10-16 00:43:34,640 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 203 transitions. Word has length 80 [2022-10-16 00:43:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:34,640 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 203 transitions. [2022-10-16 00:43:34,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 203 transitions. [2022-10-16 00:43:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-16 00:43:34,642 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:34,642 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:34,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 00:43:34,643 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1037031257, now seen corresponding path program 1 times [2022-10-16 00:43:34,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:34,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140847311] [2022-10-16 00:43:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:34,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 00:43:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 00:43:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140847311] [2022-10-16 00:43:34,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140847311] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197334546] [2022-10-16 00:43:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:34,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:34,846 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:34,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 00:43:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:34,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 00:43:34,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 00:43:35,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:35,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197334546] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:35,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:35,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-16 00:43:35,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917776320] [2022-10-16 00:43:35,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 00:43:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 00:43:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-10-16 00:43:35,030 INFO L87 Difference]: Start difference. First operand 141 states and 203 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:35,142 INFO L93 Difference]: Finished difference Result 236 states and 330 transitions. [2022-10-16 00:43:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:43:35,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 83 [2022-10-16 00:43:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:35,145 INFO L225 Difference]: With dead ends: 236 [2022-10-16 00:43:35,145 INFO L226 Difference]: Without dead ends: 236 [2022-10-16 00:43:35,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:43:35,147 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 225 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:35,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 949 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-10-16 00:43:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 169. [2022-10-16 00:43:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 159 states have internal predecessors, (218), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-16 00:43:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2022-10-16 00:43:35,156 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 83 [2022-10-16 00:43:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:35,156 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2022-10-16 00:43:35,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2022-10-16 00:43:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-16 00:43:35,158 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:35,158 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:35,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:35,372 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1334708005, now seen corresponding path program 1 times [2022-10-16 00:43:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:35,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384804757] [2022-10-16 00:43:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 00:43:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 00:43:35,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:35,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384804757] [2022-10-16 00:43:35,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384804757] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:35,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701482201] [2022-10-16 00:43:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:35,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:35,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:35,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:35,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 00:43:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:35,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:43:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 00:43:35,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 00:43:35,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701482201] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:35,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:35,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-16 00:43:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124218249] [2022-10-16 00:43:35,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:35,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 00:43:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:35,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 00:43:35,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-10-16 00:43:35,906 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 00:43:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:36,101 INFO L93 Difference]: Finished difference Result 313 states and 438 transitions. [2022-10-16 00:43:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 00:43:36,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 83 [2022-10-16 00:43:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:36,104 INFO L225 Difference]: With dead ends: 313 [2022-10-16 00:43:36,104 INFO L226 Difference]: Without dead ends: 290 [2022-10-16 00:43:36,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-10-16 00:43:36,105 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 137 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:36,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 3047 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-10-16 00:43:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 166. [2022-10-16 00:43:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 155 states have (on average 1.367741935483871) internal successors, (212), 156 states have internal predecessors, (212), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 00:43:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 226 transitions. [2022-10-16 00:43:36,114 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 226 transitions. Word has length 83 [2022-10-16 00:43:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:36,114 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 226 transitions. [2022-10-16 00:43:36,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 00:43:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 226 transitions. [2022-10-16 00:43:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 00:43:36,116 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:36,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:36,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:36,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-10-16 00:43:36,320 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 339107988, now seen corresponding path program 2 times [2022-10-16 00:43:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:36,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350396750] [2022-10-16 00:43:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 00:43:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350396750] [2022-10-16 00:43:36,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350396750] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734429722] [2022-10-16 00:43:36,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:43:36,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:36,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:36,560 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:36,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 00:43:36,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 00:43:36,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:43:36,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 00:43:36,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 00:43:36,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:36,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734429722] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:36,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:36,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-10-16 00:43:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212209749] [2022-10-16 00:43:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 00:43:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 00:43:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:43:36,738 INFO L87 Difference]: Start difference. First operand 166 states and 226 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:36,994 INFO L93 Difference]: Finished difference Result 279 states and 378 transitions. [2022-10-16 00:43:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 00:43:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 87 [2022-10-16 00:43:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:36,998 INFO L225 Difference]: With dead ends: 279 [2022-10-16 00:43:36,998 INFO L226 Difference]: Without dead ends: 279 [2022-10-16 00:43:36,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-10-16 00:43:36,999 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 295 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:37,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1075 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:43:37,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-10-16 00:43:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 176. [2022-10-16 00:43:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 165 states have (on average 1.3454545454545455) internal successors, (222), 166 states have internal predecessors, (222), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 00:43:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 236 transitions. [2022-10-16 00:43:37,008 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 236 transitions. Word has length 87 [2022-10-16 00:43:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:37,008 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 236 transitions. [2022-10-16 00:43:37,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 236 transitions. [2022-10-16 00:43:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 00:43:37,010 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:37,011 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:37,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:37,217 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash 557962706, now seen corresponding path program 1 times [2022-10-16 00:43:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:37,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126908419] [2022-10-16 00:43:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:37,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 00:43:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 00:43:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126908419] [2022-10-16 00:43:37,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126908419] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682211233] [2022-10-16 00:43:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:37,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:37,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:37,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 00:43:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:37,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 00:43:37,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 00:43:37,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:37,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682211233] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:37,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:37,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-10-16 00:43:37,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060444026] [2022-10-16 00:43:37,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 00:43:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:37,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 00:43:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:43:37,824 INFO L87 Difference]: Start difference. First operand 176 states and 236 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 13 states have internal predecessors, (102), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 00:43:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:38,638 INFO L93 Difference]: Finished difference Result 319 states and 447 transitions. [2022-10-16 00:43:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 00:43:38,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 13 states have internal predecessors, (102), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-10-16 00:43:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:38,644 INFO L225 Difference]: With dead ends: 319 [2022-10-16 00:43:38,644 INFO L226 Difference]: Without dead ends: 319 [2022-10-16 00:43:38,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=755, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 00:43:38,646 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 427 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:38,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 682 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 00:43:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-10-16 00:43:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 172. [2022-10-16 00:43:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 161 states have (on average 1.329192546583851) internal successors, (214), 162 states have internal predecessors, (214), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 00:43:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 228 transitions. [2022-10-16 00:43:38,656 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 228 transitions. Word has length 87 [2022-10-16 00:43:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 228 transitions. [2022-10-16 00:43:38,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 13 states have internal predecessors, (102), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 00:43:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 228 transitions. [2022-10-16 00:43:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-16 00:43:38,658 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:38,658 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:38,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:38,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:38,872 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1424150580, now seen corresponding path program 1 times [2022-10-16 00:43:38,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:38,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234981026] [2022-10-16 00:43:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:38,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:39,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 00:43:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 00:43:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:39,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234981026] [2022-10-16 00:43:39,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234981026] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:39,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058274726] [2022-10-16 00:43:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:39,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:39,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:39,075 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:39,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 00:43:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:43:39,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 00:43:39,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:39,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058274726] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:39,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:39,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2022-10-16 00:43:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631117038] [2022-10-16 00:43:39,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:39,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 00:43:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 00:43:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-10-16 00:43:39,466 INFO L87 Difference]: Start difference. First operand 172 states and 228 transitions. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 00:43:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:40,222 INFO L93 Difference]: Finished difference Result 473 states and 694 transitions. [2022-10-16 00:43:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-16 00:43:40,223 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-10-16 00:43:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:40,226 INFO L225 Difference]: With dead ends: 473 [2022-10-16 00:43:40,227 INFO L226 Difference]: Without dead ends: 467 [2022-10-16 00:43:40,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=629, Invalid=1263, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 00:43:40,228 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1204 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:40,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 772 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 00:43:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-10-16 00:43:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 194. [2022-10-16 00:43:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 183 states have (on average 1.3442622950819672) internal successors, (246), 184 states have internal predecessors, (246), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 00:43:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 260 transitions. [2022-10-16 00:43:40,244 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 260 transitions. Word has length 89 [2022-10-16 00:43:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:40,245 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 260 transitions. [2022-10-16 00:43:40,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 00:43:40,245 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 260 transitions. [2022-10-16 00:43:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-16 00:43:40,247 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:40,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:40,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:40,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 00:43:40,461 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 229655250, now seen corresponding path program 2 times [2022-10-16 00:43:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:40,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249244611] [2022-10-16 00:43:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:40,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:40,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 00:43:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 00:43:40,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249244611] [2022-10-16 00:43:40,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249244611] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:40,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581808275] [2022-10-16 00:43:40,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:43:40,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:40,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:40,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:40,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 00:43:40,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 00:43:40,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:43:40,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 00:43:40,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 00:43:41,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:43:41,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581808275] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:41,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 00:43:41,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-10-16 00:43:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515596876] [2022-10-16 00:43:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 00:43:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 00:43:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-10-16 00:43:41,088 INFO L87 Difference]: Start difference. First operand 194 states and 260 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:41,149 INFO L93 Difference]: Finished difference Result 230 states and 309 transitions. [2022-10-16 00:43:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:43:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 99 [2022-10-16 00:43:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:41,151 INFO L225 Difference]: With dead ends: 230 [2022-10-16 00:43:41,151 INFO L226 Difference]: Without dead ends: 164 [2022-10-16 00:43:41,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:43:41,153 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 93 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:41,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 652 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:43:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-10-16 00:43:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-10-16 00:43:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 153 states have (on average 1.392156862745098) internal successors, (213), 155 states have internal predecessors, (213), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 00:43:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2022-10-16 00:43:41,162 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 99 [2022-10-16 00:43:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:41,162 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2022-10-16 00:43:41,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2022-10-16 00:43:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-16 00:43:41,164 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:41,164 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:41,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-10-16 00:43:41,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:41,379 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash -618394862, now seen corresponding path program 1 times [2022-10-16 00:43:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:41,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729142397] [2022-10-16 00:43:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:41,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:41,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 00:43:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-16 00:43:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:41,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729142397] [2022-10-16 00:43:41,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729142397] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:41,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:41,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 00:43:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846396580] [2022-10-16 00:43:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:41,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:43:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:43:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:43:41,640 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:41,887 INFO L93 Difference]: Finished difference Result 420 states and 585 transitions. [2022-10-16 00:43:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 00:43:41,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 102 [2022-10-16 00:43:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:41,891 INFO L225 Difference]: With dead ends: 420 [2022-10-16 00:43:41,891 INFO L226 Difference]: Without dead ends: 420 [2022-10-16 00:43:41,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-10-16 00:43:41,892 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 519 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:41,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1036 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-10-16 00:43:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 202. [2022-10-16 00:43:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 189 states have (on average 1.3333333333333333) internal successors, (252), 192 states have internal predecessors, (252), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-16 00:43:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 270 transitions. [2022-10-16 00:43:41,903 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 270 transitions. Word has length 102 [2022-10-16 00:43:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:41,903 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 270 transitions. [2022-10-16 00:43:41,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 270 transitions. [2022-10-16 00:43:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-16 00:43:41,905 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:41,906 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-16 00:43:41,906 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1972199118, now seen corresponding path program 1 times [2022-10-16 00:43:41,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:41,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533299703] [2022-10-16 00:43:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 00:43:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-16 00:43:42,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:42,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533299703] [2022-10-16 00:43:42,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533299703] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:42,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:42,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-16 00:43:42,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744926670] [2022-10-16 00:43:42,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:42,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 00:43:42,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 00:43:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 00:43:42,179 INFO L87 Difference]: Start difference. First operand 202 states and 270 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:42,443 INFO L93 Difference]: Finished difference Result 432 states and 591 transitions. [2022-10-16 00:43:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 00:43:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 102 [2022-10-16 00:43:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:42,447 INFO L225 Difference]: With dead ends: 432 [2022-10-16 00:43:42,447 INFO L226 Difference]: Without dead ends: 427 [2022-10-16 00:43:42,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-10-16 00:43:42,448 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 511 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:42,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1083 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-10-16 00:43:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 216. [2022-10-16 00:43:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 201 states have (on average 1.3134328358208955) internal successors, (264), 205 states have internal predecessors, (264), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-10-16 00:43:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2022-10-16 00:43:42,461 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 102 [2022-10-16 00:43:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:42,462 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2022-10-16 00:43:42,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2022-10-16 00:43:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-16 00:43:42,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:42,464 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:42,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-10-16 00:43:42,465 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash -343635248, now seen corresponding path program 1 times [2022-10-16 00:43:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:42,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492109645] [2022-10-16 00:43:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:42,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 00:43:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-16 00:43:42,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492109645] [2022-10-16 00:43:42,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492109645] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:42,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:42,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 00:43:42,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630307605] [2022-10-16 00:43:42,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:42,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:43:42,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:43:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:43:42,698 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:42,866 INFO L93 Difference]: Finished difference Result 299 states and 404 transitions. [2022-10-16 00:43:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 00:43:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 102 [2022-10-16 00:43:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:42,869 INFO L225 Difference]: With dead ends: 299 [2022-10-16 00:43:42,870 INFO L226 Difference]: Without dead ends: 274 [2022-10-16 00:43:42,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-10-16 00:43:42,871 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 161 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:42,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1092 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:42,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-16 00:43:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 207. [2022-10-16 00:43:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 193 states have (on average 1.3264248704663213) internal successors, (256), 197 states have internal predecessors, (256), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-10-16 00:43:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 276 transitions. [2022-10-16 00:43:42,881 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 276 transitions. Word has length 102 [2022-10-16 00:43:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:42,882 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 276 transitions. [2022-10-16 00:43:42,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 276 transitions. [2022-10-16 00:43:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 00:43:42,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:42,884 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:42,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-10-16 00:43:42,885 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash -115112730, now seen corresponding path program 1 times [2022-10-16 00:43:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:42,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956889982] [2022-10-16 00:43:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:42,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 00:43:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 00:43:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:43,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956889982] [2022-10-16 00:43:43,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956889982] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:43:43,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:43:43,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 00:43:43,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299623079] [2022-10-16 00:43:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:43:43,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 00:43:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 00:43:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 00:43:43,093 INFO L87 Difference]: Start difference. First operand 207 states and 276 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:43,233 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-10-16 00:43:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:43:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2022-10-16 00:43:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:43,236 INFO L225 Difference]: With dead ends: 269 [2022-10-16 00:43:43,236 INFO L226 Difference]: Without dead ends: 269 [2022-10-16 00:43:43,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-10-16 00:43:43,237 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 61 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:43,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 866 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:43:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-16 00:43:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 211. [2022-10-16 00:43:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 197 states have (on average 1.3350253807106598) internal successors, (263), 201 states have internal predecessors, (263), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-10-16 00:43:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-10-16 00:43:43,246 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 103 [2022-10-16 00:43:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:43,246 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-10-16 00:43:43,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 00:43:43,247 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-10-16 00:43:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-16 00:43:43,252 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:43:43,252 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-16 00:43:43,252 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 00:43:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:43:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 223095657, now seen corresponding path program 1 times [2022-10-16 00:43:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:43:43,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300266] [2022-10-16 00:43:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:43:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 00:43:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 00:43:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 00:43:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 00:43:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 00:43:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:43:43,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300266] [2022-10-16 00:43:43,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300266] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:43:43,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630111121] [2022-10-16 00:43:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:43:43,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:43:43,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:43:43,722 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:43:43,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 00:43:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:43:43,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 00:43:43,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:43:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-16 00:43:43,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:43:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-16 00:43:44,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630111121] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:43:44,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:43:44,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 24 [2022-10-16 00:43:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618746480] [2022-10-16 00:43:44,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:43:44,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 00:43:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:43:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 00:43:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-10-16 00:43:44,319 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 20 states have internal predecessors, (114), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-16 00:43:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:43:46,328 INFO L93 Difference]: Finished difference Result 274 states and 385 transitions. [2022-10-16 00:43:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 00:43:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 20 states have internal predecessors, (114), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 104 [2022-10-16 00:43:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:43:46,329 INFO L225 Difference]: With dead ends: 274 [2022-10-16 00:43:46,329 INFO L226 Difference]: Without dead ends: 0 [2022-10-16 00:43:46,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=769, Invalid=3521, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 00:43:46,338 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 560 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 00:43:46,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 400 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 00:43:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-16 00:43:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-16 00:43:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:43:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-16 00:43:46,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2022-10-16 00:43:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:43:46,341 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-16 00:43:46,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 20 states have internal predecessors, (114), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-16 00:43:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-16 00:43:46,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-16 00:43:46,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-10-16 00:43:46,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-10-16 00:43:46,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 00:43:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 00:43:46,566 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:43:46,569 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 00:43:46,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:43:46 BoogieIcfgContainer [2022-10-16 00:43:46,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 00:43:46,573 INFO L158 Benchmark]: Toolchain (without parser) took 27089.50ms. Allocated memory was 151.0MB in the beginning and 332.4MB in the end (delta: 181.4MB). Free memory was 124.2MB in the beginning and 273.8MB in the end (delta: -149.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-10-16 00:43:46,573 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 151.0MB. Free memory was 121.3MB in the beginning and 121.2MB in the end (delta: 81.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 00:43:46,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.89ms. Allocated memory is still 151.0MB. Free memory was 124.1MB in the beginning and 110.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-10-16 00:43:46,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.93ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-16 00:43:46,574 INFO L158 Benchmark]: Boogie Preprocessor took 44.19ms. Allocated memory is still 151.0MB. Free memory was 108.5MB in the beginning and 106.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 00:43:46,574 INFO L158 Benchmark]: RCFGBuilder took 798.90ms. Allocated memory is still 151.0MB. Free memory was 106.6MB in the beginning and 117.6MB in the end (delta: -10.9MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-10-16 00:43:46,575 INFO L158 Benchmark]: TraceAbstraction took 25716.14ms. Allocated memory was 151.0MB in the beginning and 332.4MB in the end (delta: 181.4MB). Free memory was 117.0MB in the beginning and 273.8MB in the end (delta: -156.7MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2022-10-16 00:43:46,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 151.0MB. Free memory was 121.3MB in the beginning and 121.2MB in the end (delta: 81.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 450.89ms. Allocated memory is still 151.0MB. Free memory was 124.1MB in the beginning and 110.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.93ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.19ms. Allocated memory is still 151.0MB. Free memory was 108.5MB in the beginning and 106.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 798.90ms. Allocated memory is still 151.0MB. Free memory was 106.6MB in the beginning and 117.6MB in the end (delta: -10.9MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * TraceAbstraction took 25716.14ms. Allocated memory was 151.0MB in the beginning and 332.4MB in the end (delta: 181.4MB). Free memory was 117.0MB in the beginning and 273.8MB in the end (delta: -156.7MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 220]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 25.6s, OverallIterations: 29, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6871 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6870 mSDsluCounter, 20327 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16830 mSDsCounter, 947 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4585 IncrementalHoareTripleChecker+Invalid, 5532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 947 mSolverCounterUnsat, 3497 mSDtfsCounter, 4585 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2652 GetRequests, 2166 SyntacticMatches, 8 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3193 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=13, InterpolantAutomatonStates: 387, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 2206 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 3355 NumberOfCodeBlocks, 3267 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3995 ConstructedInterpolants, 0 QuantifiedInterpolants, 8755 SizeOfPredicates, 56 NumberOfNonLiveVariables, 3770 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 57 InterpolantComputations, 21 PerfectInterpolantSequences, 1998/2579 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-16 00:43:46,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...