/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/reducercommutativity/avg60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:14:23,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:14:23,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:14:23,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:14:23,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:14:23,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:14:23,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:14:23,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:14:23,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:14:23,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:14:23,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:14:23,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:14:23,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:14:23,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:14:23,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:14:23,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:14:23,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:14:23,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:14:23,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:14:23,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:14:23,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:14:23,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:14:23,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:14:23,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:14:23,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:14:23,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:14:23,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:14:23,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:14:23,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:14:23,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:14:23,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:14:23,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:14:23,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:14:23,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:14:23,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:14:23,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:14:23,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:14:23,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:14:23,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:14:23,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:14:23,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:14:23,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:14:23,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:14:23,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:14:23,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:14:23,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:14:23,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:14:23,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:14:23,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:14:23,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:14:23,564 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:14:23,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:14:23,565 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:14:23,565 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:14:23,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:14:23,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:14:23,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:14:23,566 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:14:23,566 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:14:23,567 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:14:23,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:14:23,567 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:14:23,567 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:14:23,567 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:14:23,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:14:23,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:14:23,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:14:23,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:23,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:14:23,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:14:23,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:14:23,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:14:23,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:14:24,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:14:24,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:14:24,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:14:24,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:14:24,045 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:14:24,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg60-2.i [2022-10-15 17:14:24,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3aab228/c11bc643fbde4ec4a9be0134b7a814e5/FLAG2e07ebab3 [2022-10-15 17:14:24,813 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:14:24,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg60-2.i [2022-10-15 17:14:24,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3aab228/c11bc643fbde4ec4a9be0134b7a814e5/FLAG2e07ebab3 [2022-10-15 17:14:25,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3aab228/c11bc643fbde4ec4a9be0134b7a814e5 [2022-10-15 17:14:25,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:14:25,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:14:25,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:25,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:14:25,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:14:25,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523413f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25, skipping insertion in model container [2022-10-15 17:14:25,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:14:25,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:14:25,428 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/reducercommutativity/avg60-2.i[1167,1180] [2022-10-15 17:14:25,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:25,449 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:14:25,508 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/reducercommutativity/avg60-2.i[1167,1180] [2022-10-15 17:14:25,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:25,533 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:14:25,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25 WrapperNode [2022-10-15 17:14:25,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:25,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:25,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:14:25,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:14:25,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,620 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-15 17:14:25,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:25,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:14:25,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:14:25,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:14:25,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:14:25,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:14:25,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:14:25,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:14:25,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (1/1) ... [2022-10-15 17:14:25,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:25,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:14:25,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:14:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:14:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:14:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:14:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:14:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-10-15 17:14:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-10-15 17:14:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:14:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:14:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:14:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:14:25,967 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:14:25,971 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:14:26,328 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:14:26,339 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:14:26,339 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:14:26,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:26 BoogieIcfgContainer [2022-10-15 17:14:26,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:14:26,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:14:26,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:14:26,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:14:26,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:14:25" (1/3) ... [2022-10-15 17:14:26,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de9c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:26, skipping insertion in model container [2022-10-15 17:14:26,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:25" (2/3) ... [2022-10-15 17:14:26,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de9c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:26, skipping insertion in model container [2022-10-15 17:14:26,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:26" (3/3) ... [2022-10-15 17:14:26,371 INFO L112 eAbstractionObserver]: Analyzing ICFG avg60-2.i [2022-10-15 17:14:26,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:14:26,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-15 17:14:26,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:14:26,618 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;@15609c67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:14:26,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-15 17:14:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:14:26,659 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:26,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:14:26,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1482877074, now seen corresponding path program 1 times [2022-10-15 17:14:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:26,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425111925] [2022-10-15 17:14:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:27,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:27,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425111925] [2022-10-15 17:14:27,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425111925] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:27,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:27,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:27,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994247733] [2022-10-15 17:14:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:27,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:27,210 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:27,386 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-10-15 17:14:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:14:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:27,401 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:14:27,401 INFO L226 Difference]: Without dead ends: 45 [2022-10-15 17:14:27,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:27,410 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:27,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 62 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-15 17:14:27,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-15 17:14:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.4) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-15 17:14:27,478 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 6 [2022-10-15 17:14:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:27,479 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-15 17:14:27,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-15 17:14:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:14:27,483 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:27,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:14:27,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:14:27,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1482877075, now seen corresponding path program 1 times [2022-10-15 17:14:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:27,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344536073] [2022-10-15 17:14:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:27,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:27,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344536073] [2022-10-15 17:14:27,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344536073] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:27,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:27,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:27,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094265980] [2022-10-15 17:14:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:27,888 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:28,032 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-10-15 17:14:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:28,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:14:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:28,037 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:14:28,037 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:14:28,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:28,039 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:28,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 59 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:14:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-15 17:14:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.1875) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 17:14:28,067 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2022-10-15 17:14:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:28,068 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 17:14:28,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 17:14:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:14:28,069 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:28,070 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:28,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:14:28,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash 615506454, now seen corresponding path program 1 times [2022-10-15 17:14:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:28,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340959316] [2022-10-15 17:14:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:28,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:28,457 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 17:14:28,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:28,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340959316] [2022-10-15 17:14:28,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340959316] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:28,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49001615] [2022-10-15 17:14:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:28,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:28,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:28,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:28,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:14:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:28,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:14:28,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:28,639 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 17:14:28,769 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 17:14:28,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:28,921 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 17:14:28,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49001615] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:28,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:28,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-15 17:14:28,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534123869] [2022-10-15 17:14:28,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:28,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:14:28,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:14:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:14:28,926 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:29,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:29,213 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-10-15 17:14:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:29,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:14:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:29,218 INFO L225 Difference]: With dead ends: 59 [2022-10-15 17:14:29,218 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:14:29,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:14:29,221 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 94 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:29,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:14:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-15 17:14:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-10-15 17:14:29,236 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 10 [2022-10-15 17:14:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:29,237 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-10-15 17:14:29,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-10-15 17:14:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:14:29,239 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:29,239 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 17:14:29,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 17:14:29,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:29,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 251852191, now seen corresponding path program 2 times [2022-10-15 17:14:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:29,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349560482] [2022-10-15 17:14:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:29,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:29,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:29,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349560482] [2022-10-15 17:14:29,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349560482] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:29,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021217937] [2022-10-15 17:14:29,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:29,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:29,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:29,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:29,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:14:29,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:29,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:29,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:14:29,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:29,878 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 17:14:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:30,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:30,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021217937] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:30,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:30,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2022-10-15 17:14:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762874739] [2022-10-15 17:14:30,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:30,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:14:30,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:14:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:30,130 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:30,364 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-15 17:14:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:14:30,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-15 17:14:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:30,366 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:14:30,366 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 17:14:30,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:14:30,369 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:30,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 17:14:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-10-15 17:14:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-10-15 17:14:30,377 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 22 [2022-10-15 17:14:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:30,377 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-10-15 17:14:30,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-10-15 17:14:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 17:14:30,379 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:30,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:30,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:30,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:14:30,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -493245006, now seen corresponding path program 1 times [2022-10-15 17:14:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:30,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112292991] [2022-10-15 17:14:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:14:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 17:14:30,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:30,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112292991] [2022-10-15 17:14:30,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112292991] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:30,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:30,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:14:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723684643] [2022-10-15 17:14:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:30,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:14:30,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:14:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:14:30,953 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:31,016 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-10-15 17:14:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:14:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-10-15 17:14:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:31,019 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:14:31,019 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:14:31,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 17:14:31,021 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:31,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:14:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-10-15 17:14:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-10-15 17:14:31,028 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 42 [2022-10-15 17:14:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:31,029 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-10-15 17:14:31,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-10-15 17:14:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 17:14:31,031 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:31,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-10-15 17:14:31,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:14:31,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:31,032 INFO L85 PathProgramCache]: Analyzing trace with hash 988824045, now seen corresponding path program 1 times [2022-10-15 17:14:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:31,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227609417] [2022-10-15 17:14:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:31,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:14:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 17:14:31,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:31,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227609417] [2022-10-15 17:14:31,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227609417] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428825629] [2022-10-15 17:14:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:31,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:31,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:31,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:31,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:14:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:31,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 17:14:31,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 17:14:31,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428825629] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:31,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:31,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 17:14:31,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885130914] [2022-10-15 17:14:31,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:31,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 17:14:31,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 17:14:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:14:31,589 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:14:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:31,704 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2022-10-15 17:14:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2022-10-15 17:14:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:31,706 INFO L225 Difference]: With dead ends: 63 [2022-10-15 17:14:31,707 INFO L226 Difference]: Without dead ends: 63 [2022-10-15 17:14:31,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:14:31,708 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:31,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 104 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-15 17:14:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-10-15 17:14:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-10-15 17:14:31,716 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 47 [2022-10-15 17:14:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:31,717 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-10-15 17:14:31,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:14:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-10-15 17:14:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-15 17:14:31,720 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:31,720 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:31,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:31,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:31,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:31,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 898392540, now seen corresponding path program 1 times [2022-10-15 17:14:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:31,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754716546] [2022-10-15 17:14:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:31,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 17:14:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 17:14:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-10-15 17:14:32,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:32,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754716546] [2022-10-15 17:14:32,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754716546] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:32,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614184794] [2022-10-15 17:14:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:32,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:32,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:32,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:14:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:32,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:32,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-10-15 17:14:32,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-10-15 17:14:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614184794] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:32,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:32,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-15 17:14:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48881635] [2022-10-15 17:14:32,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:32,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:14:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:14:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:32,797 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:32,878 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2022-10-15 17:14:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:32,879 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 117 [2022-10-15 17:14:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:32,884 INFO L225 Difference]: With dead ends: 95 [2022-10-15 17:14:32,884 INFO L226 Difference]: Without dead ends: 95 [2022-10-15 17:14:32,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:32,889 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:32,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 148 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-15 17:14:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-10-15 17:14:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 90 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2022-10-15 17:14:32,917 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 117 [2022-10-15 17:14:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:32,918 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2022-10-15 17:14:32,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2022-10-15 17:14:32,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-10-15 17:14:32,930 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:32,931 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:32,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:33,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:33,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 826111428, now seen corresponding path program 2 times [2022-10-15 17:14:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912791669] [2022-10-15 17:14:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 17:14:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-10-15 17:14:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3592 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2022-10-15 17:14:34,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912791669] [2022-10-15 17:14:34,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912791669] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476355047] [2022-10-15 17:14:34,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:34,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:34,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:34,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:34,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:14:34,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:34,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:34,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:14:34,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3592 backedges. 1628 proven. 378 refuted. 0 times theorem prover too weak. 1586 trivial. 0 not checked. [2022-10-15 17:14:34,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3592 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2022-10-15 17:14:35,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476355047] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:35,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:35,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2022-10-15 17:14:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456184144] [2022-10-15 17:14:35,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:35,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 17:14:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 17:14:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-10-15 17:14:35,094 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:35,293 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2022-10-15 17:14:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:14:35,294 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 213 [2022-10-15 17:14:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:35,296 INFO L225 Difference]: With dead ends: 159 [2022-10-15 17:14:35,296 INFO L226 Difference]: Without dead ends: 159 [2022-10-15 17:14:35,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-10-15 17:14:35,298 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 135 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:35,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 263 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-10-15 17:14:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-10-15 17:14:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.0196078431372548) internal successors, (156), 154 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2022-10-15 17:14:35,309 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 213 [2022-10-15 17:14:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:35,309 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2022-10-15 17:14:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2022-10-15 17:14:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-10-15 17:14:35,316 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:35,317 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 90, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:35,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:35,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -749142636, now seen corresponding path program 3 times [2022-10-15 17:14:35,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:35,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353479709] [2022-10-15 17:14:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:35,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-15 17:14:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-10-15 17:14:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 0 proven. 9098 refuted. 0 times theorem prover too weak. 7214 trivial. 0 not checked. [2022-10-15 17:14:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:38,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353479709] [2022-10-15 17:14:38,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353479709] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:38,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82005215] [2022-10-15 17:14:38,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:14:38,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:38,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:38,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:38,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:14:38,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:14:38,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:38,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:38,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 7330 proven. 7 refuted. 0 times theorem prover too weak. 8975 trivial. 0 not checked. [2022-10-15 17:14:39,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16305 trivial. 0 not checked. [2022-10-15 17:14:39,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82005215] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:39,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:39,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 5, 5] total 39 [2022-10-15 17:14:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130350416] [2022-10-15 17:14:39,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-15 17:14:39,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-15 17:14:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=927, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:14:39,148 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:14:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:39,342 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2022-10-15 17:14:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-10-15 17:14:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 405 [2022-10-15 17:14:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:39,353 INFO L225 Difference]: With dead ends: 186 [2022-10-15 17:14:39,353 INFO L226 Difference]: Without dead ends: 186 [2022-10-15 17:14:39,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=555, Invalid=927, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:14:39,359 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 129 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:39,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 269 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-10-15 17:14:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-10-15 17:14:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.0169491525423728) internal successors, (180), 178 states have internal predecessors, (180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2022-10-15 17:14:39,386 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 405 [2022-10-15 17:14:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:39,387 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2022-10-15 17:14:39,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:14:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2022-10-15 17:14:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-10-15 17:14:39,401 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:39,402 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 93, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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 17:14:39,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:39,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:39,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1478604433, now seen corresponding path program 4 times [2022-10-15 17:14:39,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881323513] [2022-10-15 17:14:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-15 17:14:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-10-15 17:14:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 17487 backedges. 0 proven. 9711 refuted. 0 times theorem prover too weak. 7776 trivial. 0 not checked. [2022-10-15 17:14:42,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:42,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881323513] [2022-10-15 17:14:42,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881323513] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:42,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087104155] [2022-10-15 17:14:42,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:14:42,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:42,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:42,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:14:43,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:14:43,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:43,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 17:14:43,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17487 backedges. 7816 proven. 1891 refuted. 0 times theorem prover too weak. 7780 trivial. 0 not checked. [2022-10-15 17:14:43,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17487 backedges. 0 proven. 9711 refuted. 0 times theorem prover too weak. 7776 trivial. 0 not checked. [2022-10-15 17:14:44,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087104155] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:44,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:44,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 62 [2022-10-15 17:14:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666756360] [2022-10-15 17:14:44,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:44,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-15 17:14:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-15 17:14:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:14:44,821 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand has 62 states, 62 states have (on average 4.483870967741935) internal successors, (278), 62 states have internal predecessors, (278), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:45,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:45,136 INFO L93 Difference]: Finished difference Result 299 states and 302 transitions. [2022-10-15 17:14:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-10-15 17:14:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.483870967741935) internal successors, (278), 62 states have internal predecessors, (278), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 437 [2022-10-15 17:14:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:45,139 INFO L225 Difference]: With dead ends: 299 [2022-10-15 17:14:45,139 INFO L226 Difference]: Without dead ends: 299 [2022-10-15 17:14:45,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 848 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:14:45,142 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 180 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:45,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 260 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-10-15 17:14:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-10-15 17:14:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 293 states have (on average 1.0102389078498293) internal successors, (296), 294 states have internal predecessors, (296), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 302 transitions. [2022-10-15 17:14:45,154 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 302 transitions. Word has length 437 [2022-10-15 17:14:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:45,155 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 302 transitions. [2022-10-15 17:14:45,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.483870967741935) internal successors, (278), 62 states have internal predecessors, (278), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 302 transitions. [2022-10-15 17:14:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2022-10-15 17:14:45,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:45,180 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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 17:14:45,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:45,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:45,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1216752774, now seen corresponding path program 5 times [2022-10-15 17:14:45,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:45,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810235482] [2022-10-15 17:14:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-10-15 17:14:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-10-15 17:14:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 65076 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 64995 trivial. 0 not checked. [2022-10-15 17:14:46,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810235482] [2022-10-15 17:14:46,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810235482] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248530554] [2022-10-15 17:14:46,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:14:46,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:46,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:46,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:46,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:14:50,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2022-10-15 17:14:50,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:50,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:50,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 65076 backedges. 29050 proven. 81 refuted. 0 times theorem prover too weak. 35945 trivial. 0 not checked. [2022-10-15 17:14:50,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 65076 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 64995 trivial. 0 not checked. [2022-10-15 17:14:50,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248530554] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:50,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:50,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 17:14:50,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006292385] [2022-10-15 17:14:50,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:50,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:14:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:14:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:50,372 INFO L87 Difference]: Start difference. First operand 299 states and 302 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:50,449 INFO L93 Difference]: Finished difference Result 339 states and 342 transitions. [2022-10-15 17:14:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:50,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 785 [2022-10-15 17:14:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:50,453 INFO L225 Difference]: With dead ends: 339 [2022-10-15 17:14:50,453 INFO L226 Difference]: Without dead ends: 339 [2022-10-15 17:14:50,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1568 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:50,454 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 84 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:50,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 141 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-10-15 17:14:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2022-10-15 17:14:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 333 states have (on average 1.009009009009009) internal successors, (336), 334 states have internal predecessors, (336), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 342 transitions. [2022-10-15 17:14:50,465 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 342 transitions. Word has length 785 [2022-10-15 17:14:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:50,466 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 342 transitions. [2022-10-15 17:14:50,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 342 transitions. [2022-10-15 17:14:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2022-10-15 17:14:50,496 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:50,496 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 14, 14, 14, 14, 14, 3, 3, 3, 3, 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 17:14:50,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:50,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:14:50,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1197932550, now seen corresponding path program 6 times [2022-10-15 17:14:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:50,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920653954] [2022-10-15 17:14:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:50,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-10-15 17:14:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-10-15 17:14:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 65464 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 64995 trivial. 0 not checked. [2022-10-15 17:14:52,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920653954] [2022-10-15 17:14:52,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920653954] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:52,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980839874] [2022-10-15 17:14:52,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:14:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:52,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:52,711 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:52,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:14:54,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-10-15 17:14:54,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:54,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-15 17:14:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 65464 backedges. 29050 proven. 469 refuted. 0 times theorem prover too weak. 35945 trivial. 0 not checked. [2022-10-15 17:14:54,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 65464 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 64995 trivial. 0 not checked. [2022-10-15 17:14:54,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980839874] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:54,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:54,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 17:14:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724913139] [2022-10-15 17:14:54,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:54,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:14:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:54,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:14:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:14:54,674 INFO L87 Difference]: Start difference. First operand 339 states and 342 transitions. Second operand has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:54,863 INFO L93 Difference]: Finished difference Result 419 states and 422 transitions. [2022-10-15 17:14:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:14:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 825 [2022-10-15 17:14:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:54,868 INFO L225 Difference]: With dead ends: 419 [2022-10-15 17:14:54,868 INFO L226 Difference]: Without dead ends: 419 [2022-10-15 17:14:54,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1640 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:14:54,870 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 120 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:54,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 219 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-10-15 17:14:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2022-10-15 17:14:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.0072639225181599) internal successors, (416), 414 states have internal predecessors, (416), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 422 transitions. [2022-10-15 17:14:54,883 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 422 transitions. Word has length 825 [2022-10-15 17:14:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:54,884 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 422 transitions. [2022-10-15 17:14:54,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 422 transitions. [2022-10-15 17:14:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2022-10-15 17:14:54,897 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:54,898 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 30, 30, 30, 30, 30, 3, 3, 3, 3, 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 17:14:54,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:55,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:55,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1220794618, now seen corresponding path program 7 times [2022-10-15 17:14:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:55,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781464175] [2022-10-15 17:14:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:55,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-10-15 17:14:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-10-15 17:14:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 67200 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 64995 trivial. 0 not checked. [2022-10-15 17:14:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781464175] [2022-10-15 17:14:58,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781464175] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885067141] [2022-10-15 17:14:58,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:14:58,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:58,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:58,455 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:58,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:14:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:58,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 17:14:58,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 67200 backedges. 29050 proven. 2205 refuted. 0 times theorem prover too weak. 35945 trivial. 0 not checked. [2022-10-15 17:14:59,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 67200 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 64995 trivial. 0 not checked. [2022-10-15 17:15:00,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885067141] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:00,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:00,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 62 [2022-10-15 17:15:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135658601] [2022-10-15 17:15:00,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-15 17:15:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-15 17:15:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:15:00,646 INFO L87 Difference]: Start difference. First operand 419 states and 422 transitions. Second operand has 62 states, 62 states have (on average 5.338709677419355) internal successors, (331), 62 states have internal predecessors, (331), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:01,055 INFO L93 Difference]: Finished difference Result 564 states and 567 transitions. [2022-10-15 17:15:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-15 17:15:01,056 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.338709677419355) internal successors, (331), 62 states have internal predecessors, (331), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 905 [2022-10-15 17:15:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:01,061 INFO L225 Difference]: With dead ends: 564 [2022-10-15 17:15:01,061 INFO L226 Difference]: Without dead ends: 564 [2022-10-15 17:15:01,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1847 GetRequests, 1784 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:15:01,065 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 236 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:01,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 217 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:15:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-10-15 17:15:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-10-15 17:15:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 558 states have (on average 1.0053763440860215) internal successors, (561), 559 states have internal predecessors, (561), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 567 transitions. [2022-10-15 17:15:01,081 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 567 transitions. Word has length 905 [2022-10-15 17:15:01,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:01,082 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 567 transitions. [2022-10-15 17:15:01,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.338709677419355) internal successors, (331), 62 states have internal predecessors, (331), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:01,083 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 567 transitions. [2022-10-15 17:15:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2022-10-15 17:15:01,096 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:01,096 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 59, 59, 59, 59, 59, 3, 3, 3, 3, 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 17:15:01,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:01,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:15:01,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1376504801, now seen corresponding path program 8 times [2022-10-15 17:15:01,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:01,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335358257] [2022-10-15 17:15:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:01,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms