/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_4-2.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:32:17,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:32:17,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:32:18,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:32:18,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:32:18,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:32:18,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:32:18,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:32:18,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:32:18,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:32:18,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:32:18,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:32:18,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:32:18,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:32:18,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:32:18,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:32:18,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:32:18,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:32:18,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:32:18,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:32:18,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:32:18,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:32:18,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:32:18,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:32:18,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:32:18,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:32:18,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:32:18,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:32:18,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:32:18,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:32:18,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:32:18,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:32:18,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:32:18,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:32:18,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:32:18,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:32:18,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:32:18,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:32:18,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:32:18,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:32:18,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:32:18,128 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 16:32:18,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:32:18,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:32:18,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:32:18,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:32:18,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:32:18,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:32:18,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:32:18,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:32:18,158 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:32:18,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:32:18,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:32:18,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:32:18,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:32:18,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:32:18,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:32:18,160 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:32:18,160 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:32:18,160 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:32:18,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:32:18,161 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:32:18,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:32:18,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:32:18,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:32:18,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:32:18,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:32:18,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:32:18,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:32:18,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:32:18,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:32:18,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:32:18,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:32:18,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:32:18,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:32:18,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:32:18,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:32:18,570 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:32:18,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c [2022-10-15 16:32:18,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f439875a0/f098a0dc5b6e477d813399a09a65430d/FLAG1495d7da0 [2022-10-15 16:32:19,434 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:32:19,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c [2022-10-15 16:32:19,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f439875a0/f098a0dc5b6e477d813399a09a65430d/FLAG1495d7da0 [2022-10-15 16:32:19,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f439875a0/f098a0dc5b6e477d813399a09a65430d [2022-10-15 16:32:19,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:32:19,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:32:19,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:32:19,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:32:19,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:32:19,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:32:19" (1/1) ... [2022-10-15 16:32:19,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63df5a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:19, skipping insertion in model container [2022-10-15 16:32:19,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:32:19" (1/1) ... [2022-10-15 16:32:19,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:32:19,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:32:20,089 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_4-2.c.cil.c[816,829] [2022-10-15 16:32:20,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:32:20,233 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:32:20,250 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_4-2.c.cil.c[816,829] [2022-10-15 16:32:20,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:32:20,321 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:32:20,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20 WrapperNode [2022-10-15 16:32:20,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:32:20,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:32:20,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:32:20,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:32:20,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,377 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2022-10-15 16:32:20,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:32:20,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:32:20,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:32:20,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:32:20,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:32:20,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:32:20,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:32:20,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:32:20,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (1/1) ... [2022-10-15 16:32:20,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:32:20,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:20,482 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 16:32:20,508 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 16:32:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:32:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:32:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-15 16:32:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-15 16:32:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:32:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:32:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-10-15 16:32:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-10-15 16:32:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 16:32:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 16:32:20,669 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:32:20,673 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:32:21,292 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:32:21,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:32:21,302 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:32:21,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:32:21 BoogieIcfgContainer [2022-10-15 16:32:21,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:32:21,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:32:21,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:32:21,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:32:21,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:32:19" (1/3) ... [2022-10-15 16:32:21,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a134267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:32:21, skipping insertion in model container [2022-10-15 16:32:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:32:20" (2/3) ... [2022-10-15 16:32:21,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a134267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:32:21, skipping insertion in model container [2022-10-15 16:32:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:32:21" (3/3) ... [2022-10-15 16:32:21,316 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-2.c.cil.c [2022-10-15 16:32:21,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:32:21,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 16:32:21,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:32:21,407 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;@4711ba24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:32:21,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 16:32:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 77 states have internal predecessors, (128), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-15 16:32:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 16:32:21,426 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:21,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:21,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1814141106, now seen corresponding path program 1 times [2022-10-15 16:32:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:21,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475692170] [2022-10-15 16:32:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:21,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:21,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 16:32:21,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475692170] [2022-10-15 16:32:21,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475692170] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:21,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:21,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:32:21,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52960144] [2022-10-15 16:32:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:21,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:32:21,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:32:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:32:21,841 INFO L87 Difference]: Start difference. First operand has 89 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 77 states have internal predecessors, (128), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:32:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:21,927 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2022-10-15 16:32:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:32:21,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-10-15 16:32:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:21,943 INFO L225 Difference]: With dead ends: 97 [2022-10-15 16:32:21,943 INFO L226 Difference]: Without dead ends: 95 [2022-10-15 16:32:21,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:32:21,950 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 91 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:21,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 149 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:32:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-15 16:32:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2022-10-15 16:32:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 1.445945945945946) internal successors, (107), 75 states have internal predecessors, (107), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-15 16:32:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2022-10-15 16:32:22,013 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 37 [2022-10-15 16:32:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:22,014 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2022-10-15 16:32:22,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:32:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2022-10-15 16:32:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 16:32:22,018 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:22,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:22,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:32:22,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash 331310372, now seen corresponding path program 1 times [2022-10-15 16:32:22,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:22,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828606487] [2022-10-15 16:32:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:22,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 16:32:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828606487] [2022-10-15 16:32:23,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828606487] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709300851] [2022-10-15 16:32:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:23,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:23,163 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 16:32:23,165 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 16:32:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:23,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 16:32:23,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 16:32:23,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:23,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709300851] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:23,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:23,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 24 [2022-10-15 16:32:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29697078] [2022-10-15 16:32:23,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:23,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 16:32:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 16:32:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-10-15 16:32:23,820 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand has 24 states, 20 states have (on average 2.6) internal successors, (52), 18 states have internal predecessors, (52), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-15 16:32:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:27,748 INFO L93 Difference]: Finished difference Result 350 states and 520 transitions. [2022-10-15 16:32:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 16:32:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.6) internal successors, (52), 18 states have internal predecessors, (52), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2022-10-15 16:32:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:27,756 INFO L225 Difference]: With dead ends: 350 [2022-10-15 16:32:27,757 INFO L226 Difference]: Without dead ends: 350 [2022-10-15 16:32:27,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=1562, Unknown=0, NotChecked=0, Total=1806 [2022-10-15 16:32:27,760 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 965 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:27,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 638 Invalid, 4630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-15 16:32:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-10-15 16:32:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 119. [2022-10-15 16:32:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.3775510204081634) internal successors, (135), 101 states have internal predecessors, (135), 13 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) [2022-10-15 16:32:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 170 transitions. [2022-10-15 16:32:27,819 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 170 transitions. Word has length 44 [2022-10-15 16:32:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:27,823 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 170 transitions. [2022-10-15 16:32:27,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.6) internal successors, (52), 18 states have internal predecessors, (52), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-15 16:32:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 170 transitions. [2022-10-15 16:32:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 16:32:27,834 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:27,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:27,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:32:28,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:28,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1005873155, now seen corresponding path program 1 times [2022-10-15 16:32:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:28,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022974757] [2022-10-15 16:32:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 16:32:28,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:28,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022974757] [2022-10-15 16:32:28,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022974757] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:28,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:28,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:32:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142809220] [2022-10-15 16:32:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:28,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:32:28,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:32:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:32:28,177 INFO L87 Difference]: Start difference. First operand 119 states and 170 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:32:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:28,281 INFO L93 Difference]: Finished difference Result 132 states and 188 transitions. [2022-10-15 16:32:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:32:28,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-10-15 16:32:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:28,285 INFO L225 Difference]: With dead ends: 132 [2022-10-15 16:32:28,285 INFO L226 Difference]: Without dead ends: 127 [2022-10-15 16:32:28,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:32:28,287 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 95 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:28,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 202 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:32:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-10-15 16:32:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2022-10-15 16:32:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.375) internal successors, (121), 91 states have internal predecessors, (121), 13 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) [2022-10-15 16:32:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2022-10-15 16:32:28,305 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 43 [2022-10-15 16:32:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:28,305 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2022-10-15 16:32:28,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:32:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2022-10-15 16:32:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 16:32:28,309 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:28,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:28,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:32:28,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash -656568792, now seen corresponding path program 1 times [2022-10-15 16:32:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:28,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168863012] [2022-10-15 16:32:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 16:32:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 16:32:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168863012] [2022-10-15 16:32:28,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168863012] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:28,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:28,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-10-15 16:32:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526475404] [2022-10-15 16:32:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:28,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 16:32:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 16:32:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:32:28,876 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-15 16:32:30,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:30,851 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2022-10-15 16:32:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-15 16:32:30,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2022-10-15 16:32:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:30,855 INFO L225 Difference]: With dead ends: 247 [2022-10-15 16:32:30,855 INFO L226 Difference]: Without dead ends: 247 [2022-10-15 16:32:30,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2022-10-15 16:32:30,857 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 315 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:30,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 466 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-15 16:32:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-10-15 16:32:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 114. [2022-10-15 16:32:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 14 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (23), 15 states have call predecessors, (23), 14 states have call successors, (23) [2022-10-15 16:32:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2022-10-15 16:32:30,873 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 44 [2022-10-15 16:32:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:30,874 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2022-10-15 16:32:30,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-15 16:32:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2022-10-15 16:32:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 16:32:30,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:30,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:30,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:32:30,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 549253324, now seen corresponding path program 1 times [2022-10-15 16:32:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:30,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443960473] [2022-10-15 16:32:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 16:32:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 16:32:31,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443960473] [2022-10-15 16:32:31,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443960473] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:31,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:31,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 16:32:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490553460] [2022-10-15 16:32:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:32:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:32:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:32:31,063 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 16:32:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:31,511 INFO L93 Difference]: Finished difference Result 165 states and 233 transitions. [2022-10-15 16:32:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 16:32:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-10-15 16:32:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:31,513 INFO L225 Difference]: With dead ends: 165 [2022-10-15 16:32:31,514 INFO L226 Difference]: Without dead ends: 165 [2022-10-15 16:32:31,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:32:31,515 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 228 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:31,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 233 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:32:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-10-15 16:32:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2022-10-15 16:32:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 96 states have (on average 1.34375) internal successors, (129), 99 states have internal predecessors, (129), 15 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2022-10-15 16:32:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2022-10-15 16:32:31,527 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 46 [2022-10-15 16:32:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:31,528 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2022-10-15 16:32:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 16:32:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2022-10-15 16:32:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 16:32:31,530 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:31,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:31,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:32:31,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1923484119, now seen corresponding path program 1 times [2022-10-15 16:32:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:31,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310207349] [2022-10-15 16:32:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:32:31,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:31,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310207349] [2022-10-15 16:32:31,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310207349] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:31,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914600246] [2022-10-15 16:32:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:31,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:31,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:31,715 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 16:32:31,740 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 16:32:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:31,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:32:31,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:32:31,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:32:32,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914600246] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:32,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:32,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-10-15 16:32:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127822990] [2022-10-15 16:32:32,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:32,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 16:32:32,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 16:32:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:32:32,140 INFO L87 Difference]: Start difference. First operand 120 states and 168 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 16:32:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:33,367 INFO L93 Difference]: Finished difference Result 351 states and 496 transitions. [2022-10-15 16:32:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 16:32:33,368 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2022-10-15 16:32:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:33,372 INFO L225 Difference]: With dead ends: 351 [2022-10-15 16:32:33,372 INFO L226 Difference]: Without dead ends: 351 [2022-10-15 16:32:33,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2022-10-15 16:32:33,374 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 615 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:33,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 989 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-15 16:32:33,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-10-15 16:32:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 162. [2022-10-15 16:32:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 134 states have (on average 1.3432835820895523) internal successors, (180), 138 states have internal predecessors, (180), 17 states have call successors, (17), 6 states have call predecessors, (17), 9 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) [2022-10-15 16:32:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 223 transitions. [2022-10-15 16:32:33,390 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 223 transitions. Word has length 46 [2022-10-15 16:32:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:33,390 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 223 transitions. [2022-10-15 16:32:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 16:32:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 223 transitions. [2022-10-15 16:32:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 16:32:33,392 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:33,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:33,434 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 16:32:33,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 16:32:33,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1500782293, now seen corresponding path program 1 times [2022-10-15 16:32:33,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:33,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922294506] [2022-10-15 16:32:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:32:33,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:33,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922294506] [2022-10-15 16:32:33,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922294506] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:33,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:33,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-15 16:32:33,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308105239] [2022-10-15 16:32:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:33,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:32:33,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:33,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:32:33,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:32:33,763 INFO L87 Difference]: Start difference. First operand 162 states and 223 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:32:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:34,081 INFO L93 Difference]: Finished difference Result 194 states and 264 transitions. [2022-10-15 16:32:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:32:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-10-15 16:32:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:34,083 INFO L225 Difference]: With dead ends: 194 [2022-10-15 16:32:34,084 INFO L226 Difference]: Without dead ends: 194 [2022-10-15 16:32:34,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:32:34,085 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 116 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:34,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 448 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:32:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-10-15 16:32:34,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 171. [2022-10-15 16:32:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 142 states have (on average 1.323943661971831) internal successors, (188), 145 states have internal predecessors, (188), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (25), 17 states have call predecessors, (25), 17 states have call successors, (25) [2022-10-15 16:32:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-10-15 16:32:34,096 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 46 [2022-10-15 16:32:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:34,097 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-10-15 16:32:34,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:32:34,097 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-10-15 16:32:34,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-15 16:32:34,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:34,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 16:32:34,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1293279019, now seen corresponding path program 1 times [2022-10-15 16:32:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:34,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453338089] [2022-10-15 16:32:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 16:32:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 16:32:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 16:32:34,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:34,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453338089] [2022-10-15 16:32:34,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453338089] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:34,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12066244] [2022-10-15 16:32:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:34,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:34,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:34,483 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 16:32:34,509 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 16:32:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:34,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-15 16:32:34,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:34,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 16:32:35,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12066244] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:35,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:35,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 13] total 34 [2022-10-15 16:32:35,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032272160] [2022-10-15 16:32:35,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:35,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 16:32:35,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 16:32:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1030, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 16:32:35,380 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 34 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 25 states have internal predecessors, (53), 6 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-15 16:32:47,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:47,916 INFO L93 Difference]: Finished difference Result 881 states and 1318 transitions. [2022-10-15 16:32:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-10-15 16:32:47,922 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 25 states have internal predecessors, (53), 6 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 48 [2022-10-15 16:32:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:47,931 INFO L225 Difference]: With dead ends: 881 [2022-10-15 16:32:47,932 INFO L226 Difference]: Without dead ends: 881 [2022-10-15 16:32:47,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1276, Invalid=10496, Unknown=0, NotChecked=0, Total=11772 [2022-10-15 16:32:47,943 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1428 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 11970 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 12349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 11970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:47,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1019 Invalid, 12349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 11970 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-10-15 16:32:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-10-15 16:32:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 248. [2022-10-15 16:32:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 204 states have (on average 1.2745098039215685) internal successors, (260), 213 states have internal predecessors, (260), 25 states have call successors, (25), 8 states have call predecessors, (25), 17 states have return successors, (68), 26 states have call predecessors, (68), 25 states have call successors, (68) [2022-10-15 16:32:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 353 transitions. [2022-10-15 16:32:47,990 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 353 transitions. Word has length 48 [2022-10-15 16:32:47,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:47,991 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 353 transitions. [2022-10-15 16:32:47,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 25 states have internal predecessors, (53), 6 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-15 16:32:47,991 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 353 transitions. [2022-10-15 16:32:47,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-15 16:32:47,993 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:47,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:48,032 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 16:32:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:48,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1462092951, now seen corresponding path program 2 times [2022-10-15 16:32:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:48,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120907100] [2022-10-15 16:32:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:48,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 16:32:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 16:32:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 16:32:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 16:32:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120907100] [2022-10-15 16:32:48,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120907100] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336432125] [2022-10-15 16:32:48,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:32:48,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:48,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:48,730 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 16:32:48,737 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 16:32:48,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:32:48,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:32:48,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-15 16:32:48,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:49,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:49,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336432125] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:49,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:49,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-10-15 16:32:49,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823387231] [2022-10-15 16:32:49,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:49,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-15 16:32:49,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-15 16:32:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870 [2022-10-15 16:32:49,425 INFO L87 Difference]: Start difference. First operand 248 states and 353 transitions. Second operand has 30 states, 29 states have (on average 2.0) internal successors, (58), 22 states have internal predecessors, (58), 7 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 11 states have call predecessors, (13), 6 states have call successors, (13) [2022-10-15 16:32:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:55,343 INFO L93 Difference]: Finished difference Result 577 states and 984 transitions. [2022-10-15 16:32:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 16:32:55,344 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 22 states have internal predecessors, (58), 7 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 11 states have call predecessors, (13), 6 states have call successors, (13) Word has length 48 [2022-10-15 16:32:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:55,352 INFO L225 Difference]: With dead ends: 577 [2022-10-15 16:32:55,352 INFO L226 Difference]: Without dead ends: 577 [2022-10-15 16:32:55,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=443, Invalid=3717, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 16:32:55,358 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1022 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 6215 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 6434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 6215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:55,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 654 Invalid, 6434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 6215 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-10-15 16:32:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-10-15 16:32:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 256. [2022-10-15 16:32:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 208 states have (on average 1.2692307692307692) internal successors, (264), 217 states have internal predecessors, (264), 29 states have call successors, (29), 8 states have call predecessors, (29), 17 states have return successors, (85), 30 states have call predecessors, (85), 29 states have call successors, (85) [2022-10-15 16:32:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 378 transitions. [2022-10-15 16:32:55,402 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 378 transitions. Word has length 48 [2022-10-15 16:32:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:55,402 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 378 transitions. [2022-10-15 16:32:55,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 22 states have internal predecessors, (58), 7 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 11 states have call predecessors, (13), 6 states have call successors, (13) [2022-10-15 16:32:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 378 transitions. [2022-10-15 16:32:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 16:32:55,405 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:55,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:32:55,451 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 16:32:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:55,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:55,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1014535521, now seen corresponding path program 1 times [2022-10-15 16:32:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:55,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104875654] [2022-10-15 16:32:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 16:32:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 16:32:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 16:32:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 16:32:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:55,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104875654] [2022-10-15 16:32:55,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104875654] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:32:55,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:32:55,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:32:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510279888] [2022-10-15 16:32:55,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:32:55,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:32:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:32:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:32:55,724 INFO L87 Difference]: Start difference. First operand 256 states and 378 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-15 16:32:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:32:55,992 INFO L93 Difference]: Finished difference Result 374 states and 574 transitions. [2022-10-15 16:32:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:32:55,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2022-10-15 16:32:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:32:55,996 INFO L225 Difference]: With dead ends: 374 [2022-10-15 16:32:55,996 INFO L226 Difference]: Without dead ends: 363 [2022-10-15 16:32:55,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 16:32:55,998 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 221 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:32:55,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 157 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:32:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-10-15 16:32:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 244. [2022-10-15 16:32:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 199 states have (on average 1.2763819095477387) internal successors, (254), 208 states have internal predecessors, (254), 28 states have call successors, (28), 7 states have call predecessors, (28), 16 states have return successors, (80), 28 states have call predecessors, (80), 26 states have call successors, (80) [2022-10-15 16:32:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 362 transitions. [2022-10-15 16:32:56,015 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 362 transitions. Word has length 49 [2022-10-15 16:32:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:32:56,015 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 362 transitions. [2022-10-15 16:32:56,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-15 16:32:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 362 transitions. [2022-10-15 16:32:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 16:32:56,018 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:32:56,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-10-15 16:32:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 16:32:56,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:32:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:32:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1078475267, now seen corresponding path program 1 times [2022-10-15 16:32:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:32:56,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001456900] [2022-10-15 16:32:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:32:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:32:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:32:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:32:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 16:32:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 16:32:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:56,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:32:56,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001456900] [2022-10-15 16:32:56,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001456900] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:32:56,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152210883] [2022-10-15 16:32:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:32:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:32:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:32:56,313 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 16:32:56,340 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 16:32:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:32:56,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-15 16:32:56,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:32:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:32:56,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:32:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:32:56,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152210883] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:32:56,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:32:56,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 24 [2022-10-15 16:32:56,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123873314] [2022-10-15 16:32:56,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:32:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 16:32:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:32:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 16:32:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-10-15 16:32:56,822 INFO L87 Difference]: Start difference. First operand 244 states and 362 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 18 states have internal predecessors, (56), 6 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-15 16:33:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:33:00,084 INFO L93 Difference]: Finished difference Result 494 states and 813 transitions. [2022-10-15 16:33:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 16:33:00,085 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 18 states have internal predecessors, (56), 6 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 50 [2022-10-15 16:33:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:33:00,089 INFO L225 Difference]: With dead ends: 494 [2022-10-15 16:33:00,090 INFO L226 Difference]: Without dead ends: 491 [2022-10-15 16:33:00,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=2140, Unknown=0, NotChecked=0, Total=2450 [2022-10-15 16:33:00,092 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 495 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 4054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:33:00,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 537 Invalid, 4054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3982 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-15 16:33:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-10-15 16:33:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 247. [2022-10-15 16:33:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 201 states have (on average 1.2736318407960199) internal successors, (256), 211 states have internal predecessors, (256), 28 states have call successors, (28), 7 states have call predecessors, (28), 17 states have return successors, (82), 28 states have call predecessors, (82), 26 states have call successors, (82) [2022-10-15 16:33:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 366 transitions. [2022-10-15 16:33:00,113 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 366 transitions. Word has length 50 [2022-10-15 16:33:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:33:00,113 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 366 transitions. [2022-10-15 16:33:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 18 states have internal predecessors, (56), 6 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-15 16:33:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 366 transitions. [2022-10-15 16:33:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 16:33:00,115 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:33:00,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:33:00,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 16:33:00,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 16:33:00,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:33:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:33:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash 711431741, now seen corresponding path program 1 times [2022-10-15 16:33:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:33:00,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773780013] [2022-10-15 16:33:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:33:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:33:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:33:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:33:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 16:33:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 16:33:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 16:33:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 16:33:00,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:33:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773780013] [2022-10-15 16:33:00,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773780013] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:33:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925603202] [2022-10-15 16:33:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:33:00,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:33:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:33:00,782 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 16:33:00,790 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 16:33:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:00,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 16:33:00,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:33:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:33:01,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:33:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:33:01,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925603202] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:33:01,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:33:01,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 31 [2022-10-15 16:33:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954668743] [2022-10-15 16:33:01,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:33:01,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-15 16:33:01,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:33:01,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-15 16:33:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-10-15 16:33:01,478 INFO L87 Difference]: Start difference. First operand 247 states and 366 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 5 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 9 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-15 16:33:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:33:08,784 INFO L93 Difference]: Finished difference Result 558 states and 978 transitions. [2022-10-15 16:33:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-10-15 16:33:08,784 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 5 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 9 states have call predecessors, (13), 4 states have call successors, (13) Word has length 50 [2022-10-15 16:33:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:33:08,791 INFO L225 Difference]: With dead ends: 558 [2022-10-15 16:33:08,791 INFO L226 Difference]: Without dead ends: 543 [2022-10-15 16:33:08,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=665, Invalid=5815, Unknown=0, NotChecked=0, Total=6480 [2022-10-15 16:33:08,794 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1069 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 7255 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 7466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 7255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-10-15 16:33:08,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 574 Invalid, 7466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 7255 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-10-15 16:33:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-10-15 16:33:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 255. [2022-10-15 16:33:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 206 states have (on average 1.266990291262136) internal successors, (261), 215 states have internal predecessors, (261), 31 states have call successors, (31), 7 states have call predecessors, (31), 17 states have return successors, (91), 32 states have call predecessors, (91), 29 states have call successors, (91) [2022-10-15 16:33:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 383 transitions. [2022-10-15 16:33:08,820 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 383 transitions. Word has length 50 [2022-10-15 16:33:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:33:08,821 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 383 transitions. [2022-10-15 16:33:08,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 5 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 9 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-15 16:33:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 383 transitions. [2022-10-15 16:33:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 16:33:08,823 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:33:08,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2022-10-15 16:33:08,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 16:33:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:33:09,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:33:09,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:33:09,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1223714714, now seen corresponding path program 1 times [2022-10-15 16:33:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:33:09,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652036951] [2022-10-15 16:33:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:33:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:33:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:33:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:33:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:33:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 16:33:09,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:33:09,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652036951] [2022-10-15 16:33:09,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652036951] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:33:09,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:33:09,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:33:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573825239] [2022-10-15 16:33:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:33:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:33:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:33:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:33:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:33:09,124 INFO L87 Difference]: Start difference. First operand 255 states and 383 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:33:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:33:09,223 INFO L93 Difference]: Finished difference Result 225 states and 342 transitions. [2022-10-15 16:33:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:33:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-10-15 16:33:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:33:09,225 INFO L225 Difference]: With dead ends: 225 [2022-10-15 16:33:09,225 INFO L226 Difference]: Without dead ends: 209 [2022-10-15 16:33:09,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:33:09,227 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 112 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:33:09,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 188 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:33:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-10-15 16:33:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 194. [2022-10-15 16:33:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 152 states have (on average 1.243421052631579) internal successors, (189), 158 states have internal predecessors, (189), 27 states have call successors, (27), 7 states have call predecessors, (27), 14 states have return successors, (75), 28 states have call predecessors, (75), 25 states have call successors, (75) [2022-10-15 16:33:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 291 transitions. [2022-10-15 16:33:09,244 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 291 transitions. Word has length 50 [2022-10-15 16:33:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:33:09,244 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 291 transitions. [2022-10-15 16:33:09,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 16:33:09,245 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 291 transitions. [2022-10-15 16:33:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 16:33:09,247 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:33:09,247 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:33:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 16:33:09,248 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:33:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:33:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1693028994, now seen corresponding path program 1 times [2022-10-15 16:33:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:33:09,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838922840] [2022-10-15 16:33:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:33:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:33:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:33:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:33:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:33:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-15 16:33:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 16:33:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 16:33:09,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:33:09,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838922840] [2022-10-15 16:33:09,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838922840] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:33:09,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:33:09,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:33:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186718821] [2022-10-15 16:33:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:33:09,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:33:09,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:33:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:33:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:33:09,344 INFO L87 Difference]: Start difference. First operand 194 states and 291 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 16:33:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:33:09,624 INFO L93 Difference]: Finished difference Result 277 states and 442 transitions. [2022-10-15 16:33:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:33:09,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-10-15 16:33:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:33:09,627 INFO L225 Difference]: With dead ends: 277 [2022-10-15 16:33:09,627 INFO L226 Difference]: Without dead ends: 277 [2022-10-15 16:33:09,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:33:09,628 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 231 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:33:09,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 179 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:33:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-10-15 16:33:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 195. [2022-10-15 16:33:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 153 states have (on average 1.2418300653594772) internal successors, (190), 159 states have internal predecessors, (190), 27 states have call successors, (27), 7 states have call predecessors, (27), 14 states have return successors, (75), 28 states have call predecessors, (75), 25 states have call successors, (75) [2022-10-15 16:33:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 292 transitions. [2022-10-15 16:33:09,642 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 292 transitions. Word has length 52 [2022-10-15 16:33:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:33:09,642 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 292 transitions. [2022-10-15 16:33:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 16:33:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 292 transitions. [2022-10-15 16:33:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-15 16:33:09,644 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:33:09,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:33:09,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 16:33:09,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:33:09,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:33:09,645 INFO L85 PathProgramCache]: Analyzing trace with hash 143966849, now seen corresponding path program 1 times [2022-10-15 16:33:09,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:33:09,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831533747] [2022-10-15 16:33:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:33:09,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:33:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 16:33:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 16:33:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:33:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 16:33:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 16:33:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:33:10,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:33:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831533747] [2022-10-15 16:33:10,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831533747] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:33:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89956947] [2022-10-15 16:33:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:33:10,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:33:10,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:33:10,006 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 16:33:10,025 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 16:33:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:33:10,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-15 16:33:10,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:33:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 16:33:10,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:33:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 16:33:10,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89956947] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:33:10,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:33:10,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-10-15 16:33:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306720982] [2022-10-15 16:33:10,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:33:10,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-10-15 16:33:10,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:33:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-10-15 16:33:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2022-10-15 16:33:10,725 INFO L87 Difference]: Start difference. First operand 195 states and 292 transitions. Second operand has 36 states, 32 states have (on average 2.21875) internal successors, (71), 28 states have internal predecessors, (71), 6 states have call successors, (12), 4 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11)