/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/array-crafted/zero_sum_const_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:17:43,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:17:43,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:17:43,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:17:43,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:17:43,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:17:43,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:17:43,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:17:43,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:17:43,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:17:43,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:17:43,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:17:43,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:17:43,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:17:43,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:17:43,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:17:43,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:17:43,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:17:43,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:17:43,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:17:43,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:17:43,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:17:43,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:17:43,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:17:43,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:17:43,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:17:43,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:17:43,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:17:43,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:17:43,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:17:43,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:17:43,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:17:43,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:17:43,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:17:43,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:17:43,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:17:43,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:17:43,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:17:43,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:17:43,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:17:43,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:17:43,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:17:43,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:17:43,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:17:43,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:17:43,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:17:43,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:17:43,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:17:44,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:17:44,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:17:44,001 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:17:44,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:17:44,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:17:44,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:17:44,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:17:44,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:17:44,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:17:44,003 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:17:44,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:17:44,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:17:44,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:17:44,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:17:44,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:17:44,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:17:44,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:17:44,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:17:44,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:17:44,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:17:44,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:17:44,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:17:44,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:17:44,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:17:44,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:17:44,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:17:44,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:17:44,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:17:44,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:17:44,416 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:17:44,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const_m4.c [2022-10-15 16:17:44,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4471c49/a7d00626f38b4f15a9cafb44162fb69d/FLAGd1407fbda [2022-10-15 16:17:45,186 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:17:45,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const_m4.c [2022-10-15 16:17:45,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4471c49/a7d00626f38b4f15a9cafb44162fb69d/FLAGd1407fbda [2022-10-15 16:17:45,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4471c49/a7d00626f38b4f15a9cafb44162fb69d [2022-10-15 16:17:45,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:17:45,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:17:45,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:17:45,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:17:45,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:17:45,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f95c1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45, skipping insertion in model container [2022-10-15 16:17:45,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:17:45,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:17:45,830 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/array-crafted/zero_sum_const_m4.c[408,421] [2022-10-15 16:17:45,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:17:45,869 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:17:45,884 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/array-crafted/zero_sum_const_m4.c[408,421] [2022-10-15 16:17:45,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:17:45,913 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:17:45,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45 WrapperNode [2022-10-15 16:17:45,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:17:45,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:17:45,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:17:45,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:17:45,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,962 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 126 [2022-10-15 16:17:45,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:17:45,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:17:45,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:17:45,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:17:45,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:45,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:17:45,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:17:46,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:17:46,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:17:46,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (1/1) ... [2022-10-15 16:17:46,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:17:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:46,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:17:46,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:17:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:17:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:17:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:17:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:17:46,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:17:46,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:17:46,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:17:46,190 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:17:46,193 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:17:46,520 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:17:46,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:17:46,529 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-10-15 16:17:46,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:46 BoogieIcfgContainer [2022-10-15 16:17:46,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:17:46,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:17:46,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:17:46,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:17:46,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:17:45" (1/3) ... [2022-10-15 16:17:46,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd0fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:46, skipping insertion in model container [2022-10-15 16:17:46,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:45" (2/3) ... [2022-10-15 16:17:46,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd0fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:46, skipping insertion in model container [2022-10-15 16:17:46,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:46" (3/3) ... [2022-10-15 16:17:46,574 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2022-10-15 16:17:46,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:17:46,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-15 16:17:46,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:17:46,676 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;@327ecdbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:17:46,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-15 16:17:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:17:46,691 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:46,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:17:46,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:46,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash 28865553, now seen corresponding path program 1 times [2022-10-15 16:17:46,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:46,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692804391] [2022-10-15 16:17:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:46,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692804391] [2022-10-15 16:17:46,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692804391] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:46,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:46,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:17:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373527520] [2022-10-15 16:17:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:46,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:17:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:46,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:17:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:46,976 INFO L87 Difference]: Start difference. First operand has 74 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:47,056 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-10-15 16:17:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:47,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:17:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:47,084 INFO L225 Difference]: With dead ends: 76 [2022-10-15 16:17:47,085 INFO L226 Difference]: Without dead ends: 72 [2022-10-15 16:17:47,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:47,096 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:47,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 139 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:17:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-15 16:17:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-10-15 16:17:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-10-15 16:17:47,146 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 5 [2022-10-15 16:17:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:47,146 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-10-15 16:17:47,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-10-15 16:17:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:17:47,148 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:47,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:17:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:17:47,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash 28693957, now seen corresponding path program 1 times [2022-10-15 16:17:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:47,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750818956] [2022-10-15 16:17:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:47,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750818956] [2022-10-15 16:17:47,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750818956] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:47,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:47,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:17:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347252093] [2022-10-15 16:17:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:47,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:17:47,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:47,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:17:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:17:47,430 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:47,588 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-10-15 16:17:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:17:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:47,590 INFO L225 Difference]: With dead ends: 76 [2022-10-15 16:17:47,590 INFO L226 Difference]: Without dead ends: 76 [2022-10-15 16:17:47,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:17:47,593 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:47,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 91 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-15 16:17:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-15 16:17:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.537037037037037) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-10-15 16:17:47,605 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 5 [2022-10-15 16:17:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:47,605 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-10-15 16:17:47,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-10-15 16:17:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:17:47,606 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:47,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:17:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:17:47,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 28693956, now seen corresponding path program 1 times [2022-10-15 16:17:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707737565] [2022-10-15 16:17:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:47,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707737565] [2022-10-15 16:17:47,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707737565] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:47,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:47,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:17:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372691584] [2022-10-15 16:17:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:17:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:17:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:47,729 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:47,799 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-10-15 16:17:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:47,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:17:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:47,801 INFO L225 Difference]: With dead ends: 65 [2022-10-15 16:17:47,801 INFO L226 Difference]: Without dead ends: 65 [2022-10-15 16:17:47,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:47,803 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:47,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 52 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-15 16:17:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-10-15 16:17:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 64 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-10-15 16:17:47,819 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 5 [2022-10-15 16:17:47,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:47,819 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-10-15 16:17:47,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-10-15 16:17:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:17:47,821 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:47,823 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:47,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:17:47,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 123139218, now seen corresponding path program 1 times [2022-10-15 16:17:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:47,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051922317] [2022-10-15 16:17:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051922317] [2022-10-15 16:17:48,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051922317] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521823625] [2022-10-15 16:17:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:48,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:48,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:48,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:48,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:17:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:48,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:17:48,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:48,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:17:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:48,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:48,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521823625] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:48,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:48,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-15 16:17:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042626660] [2022-10-15 16:17:48,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:48,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:17:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:17:48,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:17:48,359 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:48,788 INFO L93 Difference]: Finished difference Result 164 states and 187 transitions. [2022-10-15 16:17:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:17:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 16:17:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:48,791 INFO L225 Difference]: With dead ends: 164 [2022-10-15 16:17:48,791 INFO L226 Difference]: Without dead ends: 164 [2022-10-15 16:17:48,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:17:48,793 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 167 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:48,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 124 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:17:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-10-15 16:17:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2022-10-15 16:17:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 123 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2022-10-15 16:17:48,809 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 8 [2022-10-15 16:17:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:48,810 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2022-10-15 16:17:48,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2022-10-15 16:17:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 16:17:48,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:48,811 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-10-15 16:17:48,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:49,024 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 [2022-10-15 16:17:49,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 538330789, now seen corresponding path program 2 times [2022-10-15 16:17:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732506413] [2022-10-15 16:17:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:49,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732506413] [2022-10-15 16:17:49,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732506413] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972100979] [2022-10-15 16:17:49,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:17:49,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:49,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:49,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:17:49,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:17:49,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:17:49,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:17:49,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:49,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:17:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:49,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:49,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972100979] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:49,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:49,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-15 16:17:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675879301] [2022-10-15 16:17:49,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:17:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:17:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:17:49,716 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:50,215 INFO L93 Difference]: Finished difference Result 217 states and 256 transitions. [2022-10-15 16:17:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:17:50,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 16:17:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:50,217 INFO L225 Difference]: With dead ends: 217 [2022-10-15 16:17:50,218 INFO L226 Difference]: Without dead ends: 217 [2022-10-15 16:17:50,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:17:50,220 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 332 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:50,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 183 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:17:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-10-15 16:17:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 55. [2022-10-15 16:17:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:50,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-10-15 16:17:50,229 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 11 [2022-10-15 16:17:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:50,230 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-10-15 16:17:50,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-10-15 16:17:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 16:17:50,232 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:50,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:50,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:50,446 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 [2022-10-15 16:17:50,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:50,449 INFO L85 PathProgramCache]: Analyzing trace with hash 845370972, now seen corresponding path program 1 times [2022-10-15 16:17:50,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:50,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637482985] [2022-10-15 16:17:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:50,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:17:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:50,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637482985] [2022-10-15 16:17:50,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637482985] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:50,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:50,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:17:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217294299] [2022-10-15 16:17:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:17:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:17:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:17:50,569 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:50,673 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2022-10-15 16:17:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:17:50,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-15 16:17:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:50,674 INFO L225 Difference]: With dead ends: 89 [2022-10-15 16:17:50,674 INFO L226 Difference]: Without dead ends: 89 [2022-10-15 16:17:50,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:17:50,676 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 105 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:50,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 41 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-15 16:17:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 63. [2022-10-15 16:17:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 62 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2022-10-15 16:17:50,683 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 26 [2022-10-15 16:17:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:50,684 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2022-10-15 16:17:50,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2022-10-15 16:17:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-15 16:17:50,686 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:50,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:50,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 16:17:50,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 77842292, now seen corresponding path program 1 times [2022-10-15 16:17:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:50,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204683199] [2022-10-15 16:17:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 16:17:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:50,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204683199] [2022-10-15 16:17:50,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204683199] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054890339] [2022-10-15 16:17:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:50,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:50,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:50,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:17:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:50,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:17:50,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 16:17:50,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 16:17:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054890339] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:51,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:51,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-15 16:17:51,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262739249] [2022-10-15 16:17:51,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:17:51,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:17:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:17:51,032 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:51,102 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-10-15 16:17:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:17:51,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-10-15 16:17:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:51,104 INFO L225 Difference]: With dead ends: 68 [2022-10-15 16:17:51,104 INFO L226 Difference]: Without dead ends: 68 [2022-10-15 16:17:51,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:17:51,109 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 66 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-10-15 16:17:51,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2022-10-15 16:17:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.15625) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-10-15 16:17:51,136 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 58 [2022-10-15 16:17:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:51,136 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-10-15 16:17:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-10-15 16:17:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-15 16:17:51,141 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:51,141 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 16:17:51,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:51,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:51,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash -495071545, now seen corresponding path program 2 times [2022-10-15 16:17:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:51,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095059567] [2022-10-15 16:17:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:51,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 16:17:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:51,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095059567] [2022-10-15 16:17:51,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095059567] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:51,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110283412] [2022-10-15 16:17:51,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:17:51,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:51,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:51,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:51,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 16:17:51,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:17:51,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:17:51,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:17:51,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 16:17:51,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 16:17:51,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110283412] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:51,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:51,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-15 16:17:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576672905] [2022-10-15 16:17:51,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:51,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:17:51,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:17:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:17:51,756 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:51,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:51,971 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2022-10-15 16:17:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:17:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-10-15 16:17:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:51,974 INFO L225 Difference]: With dead ends: 124 [2022-10-15 16:17:51,974 INFO L226 Difference]: Without dead ends: 124 [2022-10-15 16:17:51,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:17:51,975 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 187 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:51,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 78 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:17:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-15 16:17:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2022-10-15 16:17:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 97 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-10-15 16:17:51,999 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 61 [2022-10-15 16:17:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:52,000 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-10-15 16:17:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-10-15 16:17:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-15 16:17:52,005 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:52,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-15 16:17:52,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:52,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:52,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 16:17:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1149611041, now seen corresponding path program 3 times [2022-10-15 16:17:52,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:52,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692820720] [2022-10-15 16:17:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:00,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692820720] [2022-10-15 16:18:00,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692820720] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:00,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965727794] [2022-10-15 16:18:00,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:18:00,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:00,392 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:18:00,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 16:18:00,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-15 16:18:00,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:18:00,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 116 conjunts are in the unsatisfiable core [2022-10-15 16:18:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:00,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:18:17,535 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:18:17,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-10-15 16:18:17,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-10-15 16:18:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:18:18,394 INFO L328 TraceCheckSpWp]: Computing backward predicates...