/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:32:09,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:32:09,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:32:09,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:32:09,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:32:09,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:32:09,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:32:09,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:32:09,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:32:09,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:32:09,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:32:09,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:32:09,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:32:09,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:32:09,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:32:09,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:32:09,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:32:09,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:32:09,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:32:09,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:32:09,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:32:09,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:32:09,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:32:09,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:32:09,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:32:09,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:32:09,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:32:09,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:32:09,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:32:09,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:32:09,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:32:09,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:32:09,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:32:09,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:32:09,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:32:09,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:32:09,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:32:09,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:32:09,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:32:09,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:32:09,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:32:09,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:32:09,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:32:09,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:32:09,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:32:09,341 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:32:09,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:32:09,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:32:09,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:32:09,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:32:09,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:32:09,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:32:09,343 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:32:09,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:32:09,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:32:09,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:32:09,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:32:09,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:32:09,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:32:09,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:32:09,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:32:09,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:32:09,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:32:09,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:32:09,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:32:09,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:32:09,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:32:09,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:32:09,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:32:09,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:32:09,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:32:09,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:32:09,818 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:32:09,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2022-10-15 16:32:09,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f766bcc90/e8c898abd73148288e8cd5c5f804a80d/FLAG7c5741c14 [2022-10-15 16:32:10,753 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:32:10,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2022-10-15 16:32:10,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f766bcc90/e8c898abd73148288e8cd5c5f804a80d/FLAG7c5741c14 [2022-10-15 16:32:11,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f766bcc90/e8c898abd73148288e8cd5c5f804a80d [2022-10-15 16:32:11,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:32:11,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:32:11,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:32:11,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:32:11,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:32:11,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b991a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11, skipping insertion in model container [2022-10-15 16:32:11,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:32:11,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:32:11,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[727,740] [2022-10-15 16:32:11,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:32:11,379 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:32:11,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[727,740] [2022-10-15 16:32:11,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:32:11,515 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:32:11,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11 WrapperNode [2022-10-15 16:32:11,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:32:11,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:32:11,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:32:11,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:32:11,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,598 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2022-10-15 16:32:11,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:32:11,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:32:11,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:32:11,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:32:11,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:32:11,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:32:11,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:32:11,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:32:11,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (1/1) ... [2022-10-15 16:32:11,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:32:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:11,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:32:11,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:32:11,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:32:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:32:11,851 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-15 16:32:11,851 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-15 16:32:11,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:32:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:32:11,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 16:32:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 16:32:12,028 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:32:12,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:32:12,795 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:32:12,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:32:12,822 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:32:12,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:32:12 BoogieIcfgContainer [2022-10-15 16:32:12,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:32:12,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:32:12,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:32:12,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:32:12,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:32:11" (1/3) ... [2022-10-15 16:32:12,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4049d099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:32:12, skipping insertion in model container [2022-10-15 16:32:12,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:11" (2/3) ... [2022-10-15 16:32:12,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4049d099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:32:12, skipping insertion in model container [2022-10-15 16:32:12,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:32:12" (3/3) ... [2022-10-15 16:32:12,849 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2.c.cil.c [2022-10-15 16:32:12,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:32:12,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 16:32:12,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:32:13,019 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;@224ffe4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:32:13,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 16:32:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 79 states have (on average 1.7215189873417722) internal successors, (136), 82 states have internal predecessors, (136), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-15 16:32:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 16:32:13,048 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:13,051 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:13,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1542961432, now seen corresponding path program 1 times [2022-10-15 16:32:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:13,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173939165] [2022-10-15 16:32:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:13,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:32:13,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:13,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173939165] [2022-10-15 16:32:13,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173939165] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:13,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:13,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:32:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070563699] [2022-10-15 16:32:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:13,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:13,834 INFO L87 Difference]: Start difference. First operand has 89 states, 79 states have (on average 1.7215189873417722) internal successors, (136), 82 states have internal predecessors, (136), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:13,955 INFO L93 Difference]: Finished difference Result 96 states and 145 transitions. [2022-10-15 16:32:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:32:13,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2022-10-15 16:32:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:13,980 INFO L225 Difference]: With dead ends: 96 [2022-10-15 16:32:13,980 INFO L226 Difference]: Without dead ends: 90 [2022-10-15 16:32:13,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:13,999 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 104 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:14,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 253 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-15 16:32:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-15 16:32:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.52) internal successors, (114), 75 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 16:32:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 123 transitions. [2022-10-15 16:32:14,083 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 123 transitions. Word has length 39 [2022-10-15 16:32:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:14,084 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 123 transitions. [2022-10-15 16:32:14,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 123 transitions. [2022-10-15 16:32:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 16:32:14,089 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:14,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:14,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:32:14,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:14,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:14,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2094957940, now seen corresponding path program 1 times [2022-10-15 16:32:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:14,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28934207] [2022-10-15 16:32:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:32:14,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28934207] [2022-10-15 16:32:14,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28934207] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:14,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:14,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:32:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977176067] [2022-10-15 16:32:14,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:14,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:14,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:14,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:14,392 INFO L87 Difference]: Start difference. First operand 82 states and 123 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:14,483 INFO L93 Difference]: Finished difference Result 130 states and 198 transitions. [2022-10-15 16:32:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:32:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-10-15 16:32:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:14,493 INFO L225 Difference]: With dead ends: 130 [2022-10-15 16:32:14,493 INFO L226 Difference]: Without dead ends: 90 [2022-10-15 16:32:14,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:14,500 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 90 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:14,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 326 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-15 16:32:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-15 16:32:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 75 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 16:32:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 122 transitions. [2022-10-15 16:32:14,520 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 122 transitions. Word has length 42 [2022-10-15 16:32:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:14,521 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 122 transitions. [2022-10-15 16:32:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 122 transitions. [2022-10-15 16:32:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 16:32:14,526 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:14,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:14,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:32:14,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1177604186, now seen corresponding path program 1 times [2022-10-15 16:32:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:14,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226493136] [2022-10-15 16:32:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:32:14,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226493136] [2022-10-15 16:32:14,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226493136] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:14,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:14,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:32:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967055593] [2022-10-15 16:32:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:14,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:32:14,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:32:14,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:32:14,858 INFO L87 Difference]: Start difference. First operand 82 states and 122 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:14,972 INFO L93 Difference]: Finished difference Result 131 states and 198 transitions. [2022-10-15 16:32:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:32:14,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-10-15 16:32:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:14,978 INFO L225 Difference]: With dead ends: 131 [2022-10-15 16:32:14,979 INFO L226 Difference]: Without dead ends: 90 [2022-10-15 16:32:14,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:32:14,985 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 151 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:14,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 437 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-15 16:32:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-15 16:32:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 75 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 16:32:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 121 transitions. [2022-10-15 16:32:15,017 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 121 transitions. Word has length 44 [2022-10-15 16:32:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:15,018 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 121 transitions. [2022-10-15 16:32:15,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 121 transitions. [2022-10-15 16:32:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 16:32:15,024 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:15,027 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:32:15,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1764410200, now seen corresponding path program 1 times [2022-10-15 16:32:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:15,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584056590] [2022-10-15 16:32:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:15,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:15,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:15,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584056590] [2022-10-15 16:32:15,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584056590] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:15,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271274548] [2022-10-15 16:32:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:15,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:15,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:15,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:32:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:15,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 16:32:15,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 16:32:15,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 16:32:16,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271274548] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:16,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:16,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 7] total 16 [2022-10-15 16:32:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513751335] [2022-10-15 16:32:16,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 16:32:16,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 16:32:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:32:16,076 INFO L87 Difference]: Start difference. First operand 82 states and 121 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 13 states have internal predecessors, (54), 4 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-15 16:32:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:16,865 INFO L93 Difference]: Finished difference Result 219 states and 342 transitions. [2022-10-15 16:32:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-15 16:32:16,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 13 states have internal predecessors, (54), 4 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 44 [2022-10-15 16:32:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:16,870 INFO L225 Difference]: With dead ends: 219 [2022-10-15 16:32:16,871 INFO L226 Difference]: Without dead ends: 219 [2022-10-15 16:32:16,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 16:32:16,874 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 347 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 985 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:32:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-10-15 16:32:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 156. [2022-10-15 16:32:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 1.4827586206896552) internal successors, (215), 146 states have internal predecessors, (215), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-10-15 16:32:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 236 transitions. [2022-10-15 16:32:16,929 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 236 transitions. Word has length 44 [2022-10-15 16:32:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:16,930 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 236 transitions. [2022-10-15 16:32:16,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 13 states have internal predecessors, (54), 4 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-15 16:32:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 236 transitions. [2022-10-15 16:32:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 16:32:16,938 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:16,939 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:16,978 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 16:32:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:17,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1419798276, now seen corresponding path program 1 times [2022-10-15 16:32:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:17,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842959017] [2022-10-15 16:32:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 16:32:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 16:32:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:17,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842959017] [2022-10-15 16:32:17,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842959017] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:17,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293284774] [2022-10-15 16:32:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:17,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:17,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:17,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:32:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 16:32:17,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:32:17,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:32:17,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293284774] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:17,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:32:17,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-10-15 16:32:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053679731] [2022-10-15 16:32:17,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:17,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:32:17,520 INFO L87 Difference]: Start difference. First operand 156 states and 236 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:17,598 INFO L93 Difference]: Finished difference Result 165 states and 250 transitions. [2022-10-15 16:32:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:32:17,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-10-15 16:32:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:17,602 INFO L225 Difference]: With dead ends: 165 [2022-10-15 16:32:17,602 INFO L226 Difference]: Without dead ends: 165 [2022-10-15 16:32:17,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:32:17,604 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 28 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:17,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 310 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-10-15 16:32:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2022-10-15 16:32:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 149 states have (on average 1.476510067114094) internal successors, (220), 151 states have internal predecessors, (220), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-15 16:32:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 244 transitions. [2022-10-15 16:32:17,626 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 244 transitions. Word has length 49 [2022-10-15 16:32:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:17,626 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 244 transitions. [2022-10-15 16:32:17,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 244 transitions. [2022-10-15 16:32:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 16:32:17,629 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:17,630 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:17,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:17,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:17,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -881394368, now seen corresponding path program 1 times [2022-10-15 16:32:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509398202] [2022-10-15 16:32:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-15 16:32:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:18,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509398202] [2022-10-15 16:32:18,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509398202] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:18,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89901187] [2022-10-15 16:32:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:18,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:18,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:18,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:32:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:18,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:32:18,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:32:18,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89901187] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:18,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:18,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-15 16:32:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842256444] [2022-10-15 16:32:18,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:18,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 16:32:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:18,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 16:32:18,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-15 16:32:18,320 INFO L87 Difference]: Start difference. First operand 161 states and 244 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 16:32:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:18,799 INFO L93 Difference]: Finished difference Result 304 states and 494 transitions. [2022-10-15 16:32:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 16:32:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-10-15 16:32:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:18,805 INFO L225 Difference]: With dead ends: 304 [2022-10-15 16:32:18,806 INFO L226 Difference]: Without dead ends: 304 [2022-10-15 16:32:18,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650 [2022-10-15 16:32:18,808 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 460 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:18,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 487 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:32:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-10-15 16:32:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 177. [2022-10-15 16:32:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 165 states have (on average 1.509090909090909) internal successors, (249), 167 states have internal predecessors, (249), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-15 16:32:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 273 transitions. [2022-10-15 16:32:18,844 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 273 transitions. Word has length 52 [2022-10-15 16:32:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:18,845 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 273 transitions. [2022-10-15 16:32:18,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 16:32:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 273 transitions. [2022-10-15 16:32:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-15 16:32:18,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:18,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:18,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:19,063 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 16:32:19,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:19,065 INFO L85 PathProgramCache]: Analyzing trace with hash -160013218, now seen corresponding path program 1 times [2022-10-15 16:32:19,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:19,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823407544] [2022-10-15 16:32:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 16:32:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:32:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:19,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823407544] [2022-10-15 16:32:19,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823407544] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496651352] [2022-10-15 16:32:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:19,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:19,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:19,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:19,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 16:32:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:19,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 16:32:19,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:19,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:32:19,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496651352] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:19,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:32:19,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 14 [2022-10-15 16:32:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995404317] [2022-10-15 16:32:19,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:32:19,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:32:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:32:19,655 INFO L87 Difference]: Start difference. First operand 177 states and 273 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:19,721 INFO L93 Difference]: Finished difference Result 188 states and 285 transitions. [2022-10-15 16:32:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:32:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2022-10-15 16:32:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:19,724 INFO L225 Difference]: With dead ends: 188 [2022-10-15 16:32:19,725 INFO L226 Difference]: Without dead ends: 188 [2022-10-15 16:32:19,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:32:19,727 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 16 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:19,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 461 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-15 16:32:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-10-15 16:32:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 174 states have (on average 1.4885057471264367) internal successors, (259), 176 states have internal predecessors, (259), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-15 16:32:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 283 transitions. [2022-10-15 16:32:19,741 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 283 transitions. Word has length 56 [2022-10-15 16:32:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:19,741 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 283 transitions. [2022-10-15 16:32:19,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 283 transitions. [2022-10-15 16:32:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-15 16:32:19,743 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:19,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:19,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:19,957 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 16:32:19,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash -102754916, now seen corresponding path program 1 times [2022-10-15 16:32:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:19,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482679747] [2022-10-15 16:32:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 16:32:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:32:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:32:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:20,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482679747] [2022-10-15 16:32:20,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482679747] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:20,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:20,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 16:32:20,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635584306] [2022-10-15 16:32:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:20,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:32:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:32:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:32:20,149 INFO L87 Difference]: Start difference. First operand 186 states and 283 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:20,213 INFO L93 Difference]: Finished difference Result 210 states and 322 transitions. [2022-10-15 16:32:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:32:20,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2022-10-15 16:32:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:20,217 INFO L225 Difference]: With dead ends: 210 [2022-10-15 16:32:20,217 INFO L226 Difference]: Without dead ends: 201 [2022-10-15 16:32:20,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:32:20,219 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 38 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:20,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 668 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-10-15 16:32:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2022-10-15 16:32:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.4792899408284024) internal successors, (250), 171 states have internal predecessors, (250), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-15 16:32:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 274 transitions. [2022-10-15 16:32:20,233 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 274 transitions. Word has length 56 [2022-10-15 16:32:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:20,233 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 274 transitions. [2022-10-15 16:32:20,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 274 transitions. [2022-10-15 16:32:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-15 16:32:20,236 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:20,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:20,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:32:20,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash 630769479, now seen corresponding path program 1 times [2022-10-15 16:32:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:20,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365795347] [2022-10-15 16:32:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 16:32:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 16:32:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 16:32:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:20,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365795347] [2022-10-15 16:32:20,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365795347] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088014104] [2022-10-15 16:32:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:20,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:20,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:20,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 16:32:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:20,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 16:32:20,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 16:32:20,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:21,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088014104] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:21,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:21,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2022-10-15 16:32:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093259738] [2022-10-15 16:32:21,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:21,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 16:32:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 16:32:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:32:21,023 INFO L87 Difference]: Start difference. First operand 181 states and 274 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-15 16:32:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:22,499 INFO L93 Difference]: Finished difference Result 292 states and 462 transitions. [2022-10-15 16:32:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-15 16:32:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 58 [2022-10-15 16:32:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:22,504 INFO L225 Difference]: With dead ends: 292 [2022-10-15 16:32:22,505 INFO L226 Difference]: Without dead ends: 287 [2022-10-15 16:32:22,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=565, Invalid=1985, Unknown=0, NotChecked=0, Total=2550 [2022-10-15 16:32:22,508 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 537 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:22,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 821 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 16:32:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-15 16:32:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 126. [2022-10-15 16:32:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 117 states have (on average 1.5042735042735043) internal successors, (176), 117 states have internal predecessors, (176), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 16:32:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 189 transitions. [2022-10-15 16:32:22,527 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 189 transitions. Word has length 58 [2022-10-15 16:32:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:22,527 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 189 transitions. [2022-10-15 16:32:22,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-15 16:32:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 189 transitions. [2022-10-15 16:32:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-15 16:32:22,530 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:22,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:22,581 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 16:32:22,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:22,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1748393057, now seen corresponding path program 1 times [2022-10-15 16:32:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852406411] [2022-10-15 16:32:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 16:32:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-15 16:32:22,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:22,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852406411] [2022-10-15 16:32:22,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852406411] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:22,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:22,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:32:22,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554653201] [2022-10-15 16:32:22,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:22,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:22,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:22,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:22,921 INFO L87 Difference]: Start difference. First operand 126 states and 189 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:22,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:22,987 INFO L93 Difference]: Finished difference Result 163 states and 242 transitions. [2022-10-15 16:32:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:32:22,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2022-10-15 16:32:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:22,990 INFO L225 Difference]: With dead ends: 163 [2022-10-15 16:32:22,990 INFO L226 Difference]: Without dead ends: 158 [2022-10-15 16:32:22,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:22,992 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:22,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 291 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-10-15 16:32:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 127. [2022-10-15 16:32:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 118 states have internal predecessors, (176), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 16:32:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2022-10-15 16:32:23,005 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 73 [2022-10-15 16:32:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:23,007 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2022-10-15 16:32:23,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2022-10-15 16:32:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-15 16:32:23,010 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:23,010 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 16:32:23,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1038905424, now seen corresponding path program 1 times [2022-10-15 16:32:23,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:23,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6242426] [2022-10-15 16:32:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 16:32:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 16:32:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:23,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6242426] [2022-10-15 16:32:23,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6242426] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:23,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:23,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-15 16:32:23,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138014769] [2022-10-15 16:32:23,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:23,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:32:23,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:32:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:32:23,326 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:23,480 INFO L93 Difference]: Finished difference Result 189 states and 280 transitions. [2022-10-15 16:32:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:32:23,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-10-15 16:32:23,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:23,485 INFO L225 Difference]: With dead ends: 189 [2022-10-15 16:32:23,485 INFO L226 Difference]: Without dead ends: 182 [2022-10-15 16:32:23,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-15 16:32:23,487 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 82 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:23,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 829 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-15 16:32:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 133. [2022-10-15 16:32:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 122 states have (on average 1.4754098360655739) internal successors, (180), 124 states have internal predecessors, (180), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-15 16:32:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2022-10-15 16:32:23,504 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 76 [2022-10-15 16:32:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:23,505 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2022-10-15 16:32:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2022-10-15 16:32:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-15 16:32:23,508 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:23,509 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:23,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 16:32:23,510 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:23,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 343791455, now seen corresponding path program 1 times [2022-10-15 16:32:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:23,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816888901] [2022-10-15 16:32:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:23,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 16:32:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-15 16:32:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816888901] [2022-10-15 16:32:23,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816888901] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:23,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:23,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:32:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713507469] [2022-10-15 16:32:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:23,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:23,676 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:23,717 INFO L93 Difference]: Finished difference Result 158 states and 233 transitions. [2022-10-15 16:32:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:32:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2022-10-15 16:32:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:23,720 INFO L225 Difference]: With dead ends: 158 [2022-10-15 16:32:23,720 INFO L226 Difference]: Without dead ends: 153 [2022-10-15 16:32:23,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:23,721 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 35 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:23,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 305 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-10-15 16:32:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 133. [2022-10-15 16:32:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 122 states have (on average 1.4672131147540983) internal successors, (179), 124 states have internal predecessors, (179), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-15 16:32:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 194 transitions. [2022-10-15 16:32:23,730 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 194 transitions. Word has length 80 [2022-10-15 16:32:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:23,731 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 194 transitions. [2022-10-15 16:32:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 194 transitions. [2022-10-15 16:32:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 16:32:23,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:23,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:23,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 16:32:23,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1037031257, now seen corresponding path program 1 times [2022-10-15 16:32:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:23,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252973629] [2022-10-15 16:32:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 16:32:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-15 16:32:24,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:24,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252973629] [2022-10-15 16:32:24,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252973629] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548498934] [2022-10-15 16:32:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:24,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:24,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:24,032 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 16:32:24,058 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 16:32:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:32:24,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-15 16:32:24,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:32:24,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548498934] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:24,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:32:24,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-15 16:32:24,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854055923] [2022-10-15 16:32:24,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:24,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:32:24,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:24,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:32:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:32:24,243 INFO L87 Difference]: Start difference. First operand 133 states and 194 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:24,363 INFO L93 Difference]: Finished difference Result 228 states and 321 transitions. [2022-10-15 16:32:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:32:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 83 [2022-10-15 16:32:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:24,367 INFO L225 Difference]: With dead ends: 228 [2022-10-15 16:32:24,367 INFO L226 Difference]: Without dead ends: 228 [2022-10-15 16:32:24,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:32:24,369 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 225 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:24,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 963 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-10-15 16:32:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 161. [2022-10-15 16:32:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 149 states have (on average 1.4026845637583893) internal successors, (209), 151 states have internal predecessors, (209), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-15 16:32:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 226 transitions. [2022-10-15 16:32:24,380 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 226 transitions. Word has length 83 [2022-10-15 16:32:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:24,381 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 226 transitions. [2022-10-15 16:32:24,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 226 transitions. [2022-10-15 16:32:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 16:32:24,383 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:24,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:24,430 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 16:32:24,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:24,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1334708005, now seen corresponding path program 1 times [2022-10-15 16:32:24,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:24,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150573877] [2022-10-15 16:32:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:24,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 16:32:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-15 16:32:24,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:24,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150573877] [2022-10-15 16:32:24,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150573877] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:24,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484288091] [2022-10-15 16:32:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:24,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:24,881 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 16:32:24,905 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 16:32:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:24,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:32:24,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-15 16:32:25,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-15 16:32:25,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484288091] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:25,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:25,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-15 16:32:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408754091] [2022-10-15 16:32:25,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:25,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 16:32:25,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 16:32:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:32:25,236 INFO L87 Difference]: Start difference. First operand 161 states and 226 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 16:32:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:25,431 INFO L93 Difference]: Finished difference Result 306 states and 430 transitions. [2022-10-15 16:32:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 16:32:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 83 [2022-10-15 16:32:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:25,435 INFO L225 Difference]: With dead ends: 306 [2022-10-15 16:32:25,435 INFO L226 Difference]: Without dead ends: 283 [2022-10-15 16:32:25,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-10-15 16:32:25,437 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 179 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:25,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2095 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-10-15 16:32:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 158. [2022-10-15 16:32:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 147 states have (on average 1.380952380952381) internal successors, (203), 148 states have internal predecessors, (203), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-15 16:32:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 217 transitions. [2022-10-15 16:32:25,450 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 217 transitions. Word has length 83 [2022-10-15 16:32:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:25,450 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 217 transitions. [2022-10-15 16:32:25,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 16:32:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 217 transitions. [2022-10-15 16:32:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-15 16:32:25,453 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:25,453 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:25,502 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 16:32:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:25,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash 339107988, now seen corresponding path program 2 times [2022-10-15 16:32:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:25,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114378117] [2022-10-15 16:32:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 16:32:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114378117] [2022-10-15 16:32:25,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114378117] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:25,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557177184] [2022-10-15 16:32:25,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:32:25,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:25,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:25,965 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 16:32:25,989 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 16:32:26,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:32:26,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:32:26,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:32:26,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:32:26,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:32:26,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557177184] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:26,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:32:26,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-10-15 16:32:26,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197820222] [2022-10-15 16:32:26,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:26,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:32:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:26,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:32:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:32:26,165 INFO L87 Difference]: Start difference. First operand 158 states and 217 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:26,467 INFO L93 Difference]: Finished difference Result 271 states and 369 transitions. [2022-10-15 16:32:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 16:32:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 87 [2022-10-15 16:32:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:26,471 INFO L225 Difference]: With dead ends: 271 [2022-10-15 16:32:26,471 INFO L226 Difference]: Without dead ends: 271 [2022-10-15 16:32:26,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-10-15 16:32:26,473 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 295 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:26,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1091 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:32:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-10-15 16:32:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 168. [2022-10-15 16:32:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 157 states have (on average 1.356687898089172) internal successors, (213), 158 states have internal predecessors, (213), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-15 16:32:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2022-10-15 16:32:26,485 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 87 [2022-10-15 16:32:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:26,485 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2022-10-15 16:32:26,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:32:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2022-10-15 16:32:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-15 16:32:26,488 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:26,488 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:26,534 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 16:32:26,703 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,SelfDestructingSolverStorable14 [2022-10-15 16:32:26,704 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 557962706, now seen corresponding path program 1 times [2022-10-15 16:32:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:26,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116401984] [2022-10-15 16:32:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:32:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:26,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 16:32:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116401984] [2022-10-15 16:32:27,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116401984] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023042670] [2022-10-15 16:32:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:27,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:27,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:27,003 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 16:32:27,006 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 16:32:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:27,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:32:27,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:27,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:27,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023042670] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:27,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:27,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-10-15 16:32:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292463775] [2022-10-15 16:32:27,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:27,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 16:32:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 16:32:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:32:27,338 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 13 states have internal predecessors, (102), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 16:32:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:28,619 INFO L93 Difference]: Finished difference Result 318 states and 454 transitions. [2022-10-15 16:32:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 16:32:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 13 states have internal predecessors, (102), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-10-15 16:32:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:28,623 INFO L225 Difference]: With dead ends: 318 [2022-10-15 16:32:28,623 INFO L226 Difference]: Without dead ends: 318 [2022-10-15 16:32:28,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 16:32:28,625 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 382 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:28,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 796 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 16:32:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-10-15 16:32:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 172. [2022-10-15 16:32:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 161 states have (on average 1.3354037267080745) internal successors, (215), 162 states have internal predecessors, (215), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-15 16:32:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 229 transitions. [2022-10-15 16:32:28,644 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 229 transitions. Word has length 87 [2022-10-15 16:32:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:28,644 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 229 transitions. [2022-10-15 16:32:28,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 13 states have internal predecessors, (102), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 16:32:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 229 transitions. [2022-10-15 16:32:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-15 16:32:28,647 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:28,647 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:28,692 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 16:32:28,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 16:32:28,863 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:28,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1424150580, now seen corresponding path program 1 times [2022-10-15 16:32:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:28,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489128500] [2022-10-15 16:32:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 16:32:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 16:32:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:29,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:29,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489128500] [2022-10-15 16:32:29,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489128500] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:29,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428510378] [2022-10-15 16:32:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:29,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:29,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:29,136 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 16:32:29,145 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 16:32:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:32:29,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:29,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428510378] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:29,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:29,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2022-10-15 16:32:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525489179] [2022-10-15 16:32:29,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 16:32:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:29,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 16:32:29,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-10-15 16:32:29,527 INFO L87 Difference]: Start difference. First operand 172 states and 229 transitions. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 16:32:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:30,406 INFO L93 Difference]: Finished difference Result 462 states and 688 transitions. [2022-10-15 16:32:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-10-15 16:32:30,407 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-10-15 16:32:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:30,411 INFO L225 Difference]: With dead ends: 462 [2022-10-15 16:32:30,411 INFO L226 Difference]: Without dead ends: 456 [2022-10-15 16:32:30,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=679, Invalid=1391, Unknown=0, NotChecked=0, Total=2070 [2022-10-15 16:32:30,413 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1044 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:30,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 927 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:32:30,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-10-15 16:32:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 193. [2022-10-15 16:32:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 183 states have internal predecessors, (246), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-15 16:32:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2022-10-15 16:32:30,435 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 89 [2022-10-15 16:32:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:30,435 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2022-10-15 16:32:30,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 16:32:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2022-10-15 16:32:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-15 16:32:30,438 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:30,438 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:30,481 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 16:32:30,652 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,SelfDestructingSolverStorable16 [2022-10-15 16:32:30,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 229655250, now seen corresponding path program 2 times [2022-10-15 16:32:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:30,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118701998] [2022-10-15 16:32:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 16:32:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 16:32:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 16:32:31,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:31,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118701998] [2022-10-15 16:32:31,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118701998] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:31,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192528157] [2022-10-15 16:32:31,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:32:31,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:31,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:31,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:31,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 16:32:31,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:32:31,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:32:31,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 16:32:31,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-10-15 16:32:31,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 16:32:32,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192528157] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:32,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:32,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-10-15 16:32:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957710101] [2022-10-15 16:32:32,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:32,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-15 16:32:32,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-15 16:32:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2022-10-15 16:32:32,051 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand has 29 states, 29 states have (on average 4.0) internal successors, (116), 24 states have internal predecessors, (116), 6 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-15 16:32:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:34,695 INFO L93 Difference]: Finished difference Result 312 states and 459 transitions. [2022-10-15 16:32:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-15 16:32:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.0) internal successors, (116), 24 states have internal predecessors, (116), 6 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) Word has length 99 [2022-10-15 16:32:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:34,699 INFO L225 Difference]: With dead ends: 312 [2022-10-15 16:32:34,699 INFO L226 Difference]: Without dead ends: 304 [2022-10-15 16:32:34,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=866, Invalid=4390, Unknown=0, NotChecked=0, Total=5256 [2022-10-15 16:32:34,703 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 703 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:34,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1609 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 16:32:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-10-15 16:32:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 193. [2022-10-15 16:32:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 183 states have internal predecessors, (246), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 16:32:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 259 transitions. [2022-10-15 16:32:34,716 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 259 transitions. Word has length 99 [2022-10-15 16:32:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:34,716 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 259 transitions. [2022-10-15 16:32:34,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.0) internal successors, (116), 24 states have internal predecessors, (116), 6 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-15 16:32:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 259 transitions. [2022-10-15 16:32:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-15 16:32:34,719 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:34,719 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:34,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:34,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 16:32:34,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1126612373, now seen corresponding path program 1 times [2022-10-15 16:32:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:34,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908740379] [2022-10-15 16:32:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 16:32:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-15 16:32:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-15 16:32:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:35,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908740379] [2022-10-15 16:32:35,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908740379] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:35,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011597635] [2022-10-15 16:32:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:35,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:35,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:35,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:35,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 16:32:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 16:32:35,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-15 16:32:35,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:32:35,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011597635] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:35,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:32:35,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-10-15 16:32:35,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036864007] [2022-10-15 16:32:35,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:35,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:32:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:32:35,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:35,161 INFO L87 Difference]: Start difference. First operand 193 states and 259 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:35,204 INFO L93 Difference]: Finished difference Result 212 states and 289 transitions. [2022-10-15 16:32:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:32:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 104 [2022-10-15 16:32:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:35,207 INFO L225 Difference]: With dead ends: 212 [2022-10-15 16:32:35,208 INFO L226 Difference]: Without dead ends: 212 [2022-10-15 16:32:35,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:35,209 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 10 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:35,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 200 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-15 16:32:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 195. [2022-10-15 16:32:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 184 states have (on average 1.3478260869565217) internal successors, (248), 185 states have internal predecessors, (248), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 16:32:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 261 transitions. [2022-10-15 16:32:35,218 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 261 transitions. Word has length 104 [2022-10-15 16:32:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:35,219 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 261 transitions. [2022-10-15 16:32:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 261 transitions. [2022-10-15 16:32:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-15 16:32:35,222 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:35,222 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:35,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:35,435 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:35,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1010301092, now seen corresponding path program 1 times [2022-10-15 16:32:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:35,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110310054] [2022-10-15 16:32:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 16:32:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 16:32:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:35,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:35,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110310054] [2022-10-15 16:32:35,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110310054] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302701394] [2022-10-15 16:32:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:35,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:35,784 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:35,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 16:32:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:35,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 16:32:35,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:35,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:36,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302701394] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:36,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:36,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 11 [2022-10-15 16:32:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634591797] [2022-10-15 16:32:36,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:32:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:32:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:32:36,091 INFO L87 Difference]: Start difference. First operand 195 states and 261 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:36,410 INFO L93 Difference]: Finished difference Result 493 states and 676 transitions. [2022-10-15 16:32:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-15 16:32:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 105 [2022-10-15 16:32:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:36,415 INFO L225 Difference]: With dead ends: 493 [2022-10-15 16:32:36,415 INFO L226 Difference]: Without dead ends: 493 [2022-10-15 16:32:36,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 212 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-10-15 16:32:36,417 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 450 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:36,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1622 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:32:36,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-10-15 16:32:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 241. [2022-10-15 16:32:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 227 states have (on average 1.2995594713656389) internal successors, (295), 228 states have internal predecessors, (295), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-15 16:32:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 319 transitions. [2022-10-15 16:32:36,436 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 319 transitions. Word has length 105 [2022-10-15 16:32:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:36,437 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 319 transitions. [2022-10-15 16:32:36,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 319 transitions. [2022-10-15 16:32:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-15 16:32:36,439 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:36,440 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:36,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:36,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-10-15 16:32:36,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1290521498, now seen corresponding path program 1 times [2022-10-15 16:32:36,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:36,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131636589] [2022-10-15 16:32:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:36,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 16:32:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 16:32:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:36,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:36,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131636589] [2022-10-15 16:32:36,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131636589] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:36,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576374811] [2022-10-15 16:32:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:36,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:36,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:36,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:36,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 16:32:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:37,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 16:32:37,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-10-15 16:32:37,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-10-15 16:32:37,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576374811] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:37,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:37,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 19 [2022-10-15 16:32:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826113782] [2022-10-15 16:32:37,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 16:32:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 16:32:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-10-15 16:32:37,416 INFO L87 Difference]: Start difference. First operand 241 states and 319 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-15 16:32:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:38,398 INFO L93 Difference]: Finished difference Result 583 states and 820 transitions. [2022-10-15 16:32:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 16:32:38,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 105 [2022-10-15 16:32:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:38,402 INFO L225 Difference]: With dead ends: 583 [2022-10-15 16:32:38,403 INFO L226 Difference]: Without dead ends: 555 [2022-10-15 16:32:38,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=310, Invalid=1670, Unknown=0, NotChecked=0, Total=1980 [2022-10-15 16:32:38,405 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 903 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:38,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1288 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 16:32:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-10-15 16:32:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 244. [2022-10-15 16:32:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 227 states have (on average 1.2907488986784141) internal successors, (293), 228 states have internal predecessors, (293), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (32), 11 states have call predecessors, (32), 6 states have call successors, (32) [2022-10-15 16:32:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 332 transitions. [2022-10-15 16:32:38,425 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 332 transitions. Word has length 105 [2022-10-15 16:32:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:38,425 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 332 transitions. [2022-10-15 16:32:38,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-15 16:32:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 332 transitions. [2022-10-15 16:32:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-15 16:32:38,428 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:38,428 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:38,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:38,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:38,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash -735541478, now seen corresponding path program 1 times [2022-10-15 16:32:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:38,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60351522] [2022-10-15 16:32:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:38,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 16:32:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:38,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 16:32:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:38,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:38,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60351522] [2022-10-15 16:32:38,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60351522] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:38,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554578459] [2022-10-15 16:32:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:38,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:38,916 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:38,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 16:32:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:32:39,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:39,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:39,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554578459] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:39,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:39,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-10-15 16:32:39,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832166814] [2022-10-15 16:32:39,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:32:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:32:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:32:39,178 INFO L87 Difference]: Start difference. First operand 244 states and 332 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:39,393 INFO L93 Difference]: Finished difference Result 327 states and 459 transitions. [2022-10-15 16:32:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 16:32:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 105 [2022-10-15 16:32:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:39,396 INFO L225 Difference]: With dead ends: 327 [2022-10-15 16:32:39,397 INFO L226 Difference]: Without dead ends: 303 [2022-10-15 16:32:39,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 213 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-10-15 16:32:39,398 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 108 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:39,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1286 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-10-15 16:32:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 230. [2022-10-15 16:32:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 214 states have (on average 1.308411214953271) internal successors, (280), 217 states have internal predecessors, (280), 6 states have call successors, (6), 4 states have call predecessors, (6), 9 states have return successors, (23), 8 states have call predecessors, (23), 5 states have call successors, (23) [2022-10-15 16:32:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 309 transitions. [2022-10-15 16:32:39,411 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 309 transitions. Word has length 105 [2022-10-15 16:32:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:39,412 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 309 transitions. [2022-10-15 16:32:39,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 309 transitions. [2022-10-15 16:32:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-10-15 16:32:39,414 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:39,415 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:39,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:39,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:39,630 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 427126266, now seen corresponding path program 1 times [2022-10-15 16:32:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763468604] [2022-10-15 16:32:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 16:32:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 16:32:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-15 16:32:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:39,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763468604] [2022-10-15 16:32:39,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763468604] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:39,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778519568] [2022-10-15 16:32:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:39,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:39,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:39,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:39,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-15 16:32:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:39,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 16:32:39,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-15 16:32:39,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:32:39,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778519568] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:39,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:32:39,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-10-15 16:32:39,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872651533] [2022-10-15 16:32:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:32:39,893 INFO L87 Difference]: Start difference. First operand 230 states and 309 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:39,951 INFO L93 Difference]: Finished difference Result 255 states and 349 transitions. [2022-10-15 16:32:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:32:39,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 106 [2022-10-15 16:32:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:39,953 INFO L225 Difference]: With dead ends: 255 [2022-10-15 16:32:39,953 INFO L226 Difference]: Without dead ends: 255 [2022-10-15 16:32:39,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:32:39,954 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 14 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:39,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 316 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-10-15 16:32:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 235. [2022-10-15 16:32:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 219 states have (on average 1.3150684931506849) internal successors, (288), 222 states have internal predecessors, (288), 6 states have call successors, (6), 4 states have call predecessors, (6), 9 states have return successors, (23), 8 states have call predecessors, (23), 5 states have call successors, (23) [2022-10-15 16:32:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 317 transitions. [2022-10-15 16:32:39,964 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 317 transitions. Word has length 106 [2022-10-15 16:32:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:39,965 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 317 transitions. [2022-10-15 16:32:39,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 16:32:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 317 transitions. [2022-10-15 16:32:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-15 16:32:39,967 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:39,968 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:40,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-15 16:32:40,187 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 999969441, now seen corresponding path program 1 times [2022-10-15 16:32:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:40,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433363896] [2022-10-15 16:32:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 16:32:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-15 16:32:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 16:32:40,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:40,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433363896] [2022-10-15 16:32:40,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433363896] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:40,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890204097] [2022-10-15 16:32:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:40,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:40,697 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:32:40,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-15 16:32:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:40,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 16:32:40,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 16:32:41,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-10-15 16:32:41,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890204097] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:41,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:41,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 27 [2022-10-15 16:32:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514377298] [2022-10-15 16:32:41,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:41,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-15 16:32:41,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:41,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-15 16:32:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-10-15 16:32:41,741 INFO L87 Difference]: Start difference. First operand 235 states and 317 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 23 states have internal predecessors, (118), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-15 16:32:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:44,932 INFO L93 Difference]: Finished difference Result 321 states and 475 transitions. [2022-10-15 16:32:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-15 16:32:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 23 states have internal predecessors, (118), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 107 [2022-10-15 16:32:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:44,934 INFO L225 Difference]: With dead ends: 321 [2022-10-15 16:32:44,935 INFO L226 Difference]: Without dead ends: 0 [2022-10-15 16:32:44,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=846, Invalid=4266, Unknown=0, NotChecked=0, Total=5112 [2022-10-15 16:32:44,938 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 600 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:44,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 397 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 16:32:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-15 16:32:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-15 16:32:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:32:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-15 16:32:44,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2022-10-15 16:32:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:44,940 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-15 16:32:44,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 23 states have internal predecessors, (118), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-15 16:32:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-15 16:32:44,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-15 16:32:44,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-10-15 16:32:44,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-10-15 16:32:44,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:45,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:45,165 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:45,167 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:32:45,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:32:45 BoogieIcfgContainer [2022-10-15 16:32:45,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:32:45,176 INFO L158 Benchmark]: Toolchain (without parser) took 34122.85ms. Allocated memory was 155.2MB in the beginning and 324.0MB in the end (delta: 168.8MB). Free memory was 128.8MB in the beginning and 286.8MB in the end (delta: -157.9MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-10-15 16:32:45,176 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:32:45,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.95ms. Allocated memory is still 155.2MB. Free memory was 128.7MB in the beginning and 115.0MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-10-15 16:32:45,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.36ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:32:45,177 INFO L158 Benchmark]: Boogie Preprocessor took 66.95ms. Allocated memory is still 155.2MB. Free memory was 112.9MB in the beginning and 111.0MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:32:45,178 INFO L158 Benchmark]: RCFGBuilder took 1156.26ms. Allocated memory is still 155.2MB. Free memory was 110.9MB in the beginning and 124.1MB in the end (delta: -13.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-10-15 16:32:45,183 INFO L158 Benchmark]: TraceAbstraction took 32340.65ms. Allocated memory was 155.2MB in the beginning and 324.0MB in the end (delta: 168.8MB). Free memory was 123.5MB in the beginning and 286.8MB in the end (delta: -163.2MB). Peak memory consumption was 5.4MB. Max. memory is 8.0GB. [2022-10-15 16:32:45,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 461.95ms. Allocated memory is still 155.2MB. Free memory was 128.7MB in the beginning and 115.0MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.36ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.95ms. Allocated memory is still 155.2MB. Free memory was 112.9MB in the beginning and 111.0MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1156.26ms. Allocated memory is still 155.2MB. Free memory was 110.9MB in the beginning and 124.1MB in the end (delta: -13.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * TraceAbstraction took 32340.65ms. Allocated memory was 155.2MB in the beginning and 324.0MB in the end (delta: 168.8MB). Free memory was 123.5MB in the beginning and 286.8MB in the end (delta: -163.2MB). Peak memory consumption was 5.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 220]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 32.2s, OverallIterations: 24, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6883 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6850 mSDsluCounter, 18763 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15800 mSDsCounter, 1000 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5444 IncrementalHoareTripleChecker+Invalid, 6444 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1000 mSolverCounterUnsat, 2963 mSDtfsCounter, 5444 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3087 GetRequests, 2550 SyntacticMatches, 26 SemanticMatches, 511 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5141 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=21, InterpolantAutomatonStates: 420, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 1989 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 3248 NumberOfCodeBlocks, 3210 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 4185 ConstructedInterpolants, 0 QuantifiedInterpolants, 8402 SizeOfPredicates, 77 NumberOfNonLiveVariables, 4116 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 53 InterpolantComputations, 13 PerfectInterpolantSequences, 2600/3081 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-15 16:32:45,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...