/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/recursive-simple/id_i15_o15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:12:38,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:12:38,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:12:38,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:12:38,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:12:38,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:12:38,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:12:38,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:12:38,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:12:38,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:12:38,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:12:38,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:12:38,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:12:38,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:12:38,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:12:38,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:12:38,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:12:38,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:12:38,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:12:38,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:12:38,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:12:38,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:12:38,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:12:38,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:12:38,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:12:38,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:12:38,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:12:38,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:12:38,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:12:38,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:12:38,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:12:38,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:12:38,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:12:38,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:12:38,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:12:38,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:12:38,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:12:38,360 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:12:38,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:12:38,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:12:38,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:12:38,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:12:38,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:12:38,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:12:38,362 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:12:38,363 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:12:38,363 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:12:38,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:12:38,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:12:38,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:12:38,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:12:38,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:12:38,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:12:38,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:12:38,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:12:38,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:12:38,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:12:38,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:12:38,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:12:38,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:12:38,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:12:38,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:12:38,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:12:38,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:12:38,857 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:12:38,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c [2022-10-15 17:12:38,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00aa897f/6b579c8c4ac04037835e5c9082cac5b2/FLAG053f07217 [2022-10-15 17:12:39,622 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:12:39,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c [2022-10-15 17:12:39,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00aa897f/6b579c8c4ac04037835e5c9082cac5b2/FLAG053f07217 [2022-10-15 17:12:40,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00aa897f/6b579c8c4ac04037835e5c9082cac5b2 [2022-10-15 17:12:40,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:12:40,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:12:40,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:12:40,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:12:40,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:12:40,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296ec8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40, skipping insertion in model container [2022-10-15 17:12:40,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:12:40,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:12:40,195 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/recursive-simple/id_i15_o15-1.c[454,467] [2022-10-15 17:12:40,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:12:40,209 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:12:40,226 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/recursive-simple/id_i15_o15-1.c[454,467] [2022-10-15 17:12:40,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:12:40,243 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:12:40,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40 WrapperNode [2022-10-15 17:12:40,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:12:40,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:12:40,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:12:40,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:12:40,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,282 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-15 17:12:40,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:12:40,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:12:40,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:12:40,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:12:40,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:12:40,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:12:40,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:12:40,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:12:40,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (1/1) ... [2022-10-15 17:12:40,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:12:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:40,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:12:40,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:12:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:12:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:12:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:12:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:12:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-15 17:12:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-15 17:12:40,478 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:12:40,480 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:12:40,612 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:12:40,623 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:12:40,623 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 17:12:40,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:12:40 BoogieIcfgContainer [2022-10-15 17:12:40,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:12:40,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:12:40,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:12:40,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:12:40,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:12:40" (1/3) ... [2022-10-15 17:12:40,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27546c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:12:40, skipping insertion in model container [2022-10-15 17:12:40,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:12:40" (2/3) ... [2022-10-15 17:12:40,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27546c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:12:40, skipping insertion in model container [2022-10-15 17:12:40,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:12:40" (3/3) ... [2022-10-15 17:12:40,648 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i15_o15-1.c [2022-10-15 17:12:40,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:12:40,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 17:12:40,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:12:40,798 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;@1cdf51f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:12:40,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 17:12:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:12:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:12:40,835 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:40,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:40,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1993088021, now seen corresponding path program 1 times [2022-10-15 17:12:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:40,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657889766] [2022-10-15 17:12:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:40,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:12:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:41,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657889766] [2022-10-15 17:12:41,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657889766] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:12:41,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:12:41,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:12:41,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247243706] [2022-10-15 17:12:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:12:41,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:12:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:12:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:12:41,322 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:12:41,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:41,388 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-10-15 17:12:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:12:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-10-15 17:12:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:41,403 INFO L225 Difference]: With dead ends: 19 [2022-10-15 17:12:41,404 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 17:12:41,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 17:12:41,412 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:41,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 17:12:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-15 17:12:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:12:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-10-15 17:12:41,462 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2022-10-15 17:12:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:41,463 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-10-15 17:12:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:12:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-10-15 17:12:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 17:12:41,465 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:41,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:41,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:12:41,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1131436075, now seen corresponding path program 1 times [2022-10-15 17:12:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:41,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575024519] [2022-10-15 17:12:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:41,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:12:41,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:41,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575024519] [2022-10-15 17:12:41,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575024519] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:41,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784404394] [2022-10-15 17:12:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:41,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:41,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:41,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:41,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:12:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:41,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:12:41,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:12:41,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:12:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784404394] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:42,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:42,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-10-15 17:12:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831011617] [2022-10-15 17:12:42,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:12:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:12:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:12:42,189 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 13 states, 10 states have (on average 2.2) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 17:12:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:42,246 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-10-15 17:12:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:12:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.2) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 6 states have call successors, (6) Word has length 16 [2022-10-15 17:12:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:42,248 INFO L225 Difference]: With dead ends: 20 [2022-10-15 17:12:42,248 INFO L226 Difference]: Without dead ends: 20 [2022-10-15 17:12:42,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:12:42,252 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:42,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 38 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-15 17:12:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-15 17:12:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:12:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-10-15 17:12:42,260 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2022-10-15 17:12:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:42,260 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-10-15 17:12:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.2) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 17:12:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-10-15 17:12:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:12:42,262 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:42,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:42,303 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 17:12:42,476 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 17:12:42,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:42,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1751953557, now seen corresponding path program 2 times [2022-10-15 17:12:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:42,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406697568] [2022-10-15 17:12:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:42,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 17:12:42,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:42,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406697568] [2022-10-15 17:12:42,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406697568] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:42,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828296798] [2022-10-15 17:12:42,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:12:42,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:42,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:42,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:42,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:12:42,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:12:42,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:42,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:12:42,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 17:12:42,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:12:43,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828296798] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:43,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:43,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 15 [2022-10-15 17:12:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19116041] [2022-10-15 17:12:43,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 17:12:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 17:12:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:12:43,413 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 15 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 3 states have call predecessors, (9), 7 states have call successors, (9) [2022-10-15 17:12:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:43,467 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-10-15 17:12:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:12:43,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 15 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 3 states have call predecessors, (9), 7 states have call successors, (9) Word has length 22 [2022-10-15 17:12:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:43,469 INFO L225 Difference]: With dead ends: 23 [2022-10-15 17:12:43,469 INFO L226 Difference]: Without dead ends: 23 [2022-10-15 17:12:43,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:12:43,472 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:43,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 52 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-15 17:12:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-15 17:12:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:12:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-10-15 17:12:43,485 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 22 [2022-10-15 17:12:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:43,486 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-10-15 17:12:43,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 15 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 3 states have call predecessors, (9), 7 states have call successors, (9) [2022-10-15 17:12:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-10-15 17:12:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 17:12:43,492 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:43,492 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:43,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:43,707 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,SelfDestructingSolverStorable2 [2022-10-15 17:12:43,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1658754005, now seen corresponding path program 3 times [2022-10-15 17:12:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:43,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307379719] [2022-10-15 17:12:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:43,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 17:12:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:44,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307379719] [2022-10-15 17:12:44,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307379719] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:44,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306914300] [2022-10-15 17:12:44,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:12:44,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:44,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:44,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:12:44,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:12:44,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:44,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 17:12:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 17:12:44,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 17:12:44,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306914300] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:44,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:44,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2022-10-15 17:12:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696478049] [2022-10-15 17:12:44,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:44,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:12:44,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:12:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:12:44,810 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) [2022-10-15 17:12:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:44,894 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-10-15 17:12:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:12:44,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) Word has length 28 [2022-10-15 17:12:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:44,896 INFO L225 Difference]: With dead ends: 26 [2022-10-15 17:12:44,896 INFO L226 Difference]: Without dead ends: 26 [2022-10-15 17:12:44,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:12:44,898 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:44,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 75 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-15 17:12:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-10-15 17:12:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:12:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-10-15 17:12:44,906 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 28 [2022-10-15 17:12:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:44,907 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-10-15 17:12:44,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) [2022-10-15 17:12:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-10-15 17:12:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 17:12:44,909 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:44,909 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:44,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:45,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:45,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:45,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash 12143339, now seen corresponding path program 4 times [2022-10-15 17:12:45,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:45,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305223217] [2022-10-15 17:12:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:45,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:12:45,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305223217] [2022-10-15 17:12:45,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305223217] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:45,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814360225] [2022-10-15 17:12:45,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:12:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:45,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:45,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:12:45,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:12:45,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:45,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 17:12:45,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 17:12:45,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:12:46,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814360225] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:46,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:46,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 19 [2022-10-15 17:12:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087243229] [2022-10-15 17:12:46,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:46,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 17:12:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 17:12:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-10-15 17:12:46,349 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 19 states, 16 states have (on average 2.125) internal successors, (34), 19 states have internal predecessors, (34), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2022-10-15 17:12:46,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:46,439 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-10-15 17:12:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:12:46,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.125) internal successors, (34), 19 states have internal predecessors, (34), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) Word has length 34 [2022-10-15 17:12:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:46,444 INFO L225 Difference]: With dead ends: 29 [2022-10-15 17:12:46,444 INFO L226 Difference]: Without dead ends: 29 [2022-10-15 17:12:46,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:12:46,453 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:46,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 91 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-15 17:12:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-15 17:12:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 17:12:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-10-15 17:12:46,477 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 34 [2022-10-15 17:12:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:46,477 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-10-15 17:12:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.125) internal successors, (34), 19 states have internal predecessors, (34), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2022-10-15 17:12:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-10-15 17:12:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-15 17:12:46,482 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:46,482 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:46,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:46,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:46,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1060261931, now seen corresponding path program 5 times [2022-10-15 17:12:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:46,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468521543] [2022-10-15 17:12:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:46,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-15 17:12:47,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:47,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468521543] [2022-10-15 17:12:47,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468521543] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:47,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610530803] [2022-10-15 17:12:47,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:12:47,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:47,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:47,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:47,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:12:47,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-10-15 17:12:47,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:47,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:12:47,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 17:12:47,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 17:12:48,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610530803] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:48,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:48,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2022-10-15 17:12:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416589924] [2022-10-15 17:12:48,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:48,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 17:12:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:48,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 17:12:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:12:48,289 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 21 states, 18 states have (on average 2.111111111111111) internal successors, (38), 21 states have internal predecessors, (38), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) [2022-10-15 17:12:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:48,378 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-10-15 17:12:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:12:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.111111111111111) internal successors, (38), 21 states have internal predecessors, (38), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) Word has length 40 [2022-10-15 17:12:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:48,380 INFO L225 Difference]: With dead ends: 32 [2022-10-15 17:12:48,380 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 17:12:48,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2022-10-15 17:12:48,382 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:48,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 97 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 17:12:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-15 17:12:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 17:12:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-10-15 17:12:48,389 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 40 [2022-10-15 17:12:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:48,390 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-10-15 17:12:48,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.111111111111111) internal successors, (38), 21 states have internal predecessors, (38), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) [2022-10-15 17:12:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-10-15 17:12:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 17:12:48,392 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:48,392 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:48,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:48,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash 456250987, now seen corresponding path program 6 times [2022-10-15 17:12:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236846615] [2022-10-15 17:12:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-15 17:12:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236846615] [2022-10-15 17:12:49,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236846615] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247616175] [2022-10-15 17:12:49,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:12:49,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:49,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:49,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:12:49,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-10-15 17:12:49,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:49,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:12:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-15 17:12:49,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:12:50,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247616175] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:50,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:50,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 23 [2022-10-15 17:12:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339944148] [2022-10-15 17:12:50,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:50,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 17:12:50,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:50,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 17:12:50,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:12:50,653 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 23 states, 20 states have (on average 2.1) internal successors, (42), 23 states have internal predecessors, (42), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (21), 7 states have call predecessors, (21), 11 states have call successors, (21) [2022-10-15 17:12:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:50,743 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-10-15 17:12:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 17:12:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.1) internal successors, (42), 23 states have internal predecessors, (42), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (21), 7 states have call predecessors, (21), 11 states have call successors, (21) Word has length 46 [2022-10-15 17:12:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:50,745 INFO L225 Difference]: With dead ends: 35 [2022-10-15 17:12:50,746 INFO L226 Difference]: Without dead ends: 35 [2022-10-15 17:12:50,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=267, Invalid=603, Unknown=0, NotChecked=0, Total=870 [2022-10-15 17:12:50,747 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:50,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 100 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:12:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-15 17:12:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-10-15 17:12:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-15 17:12:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-10-15 17:12:50,754 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 46 [2022-10-15 17:12:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:50,755 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-10-15 17:12:50,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.1) internal successors, (42), 23 states have internal predecessors, (42), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (21), 7 states have call predecessors, (21), 11 states have call successors, (21) [2022-10-15 17:12:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-10-15 17:12:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 17:12:50,757 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:50,757 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:50,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:50,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:50,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash 556858325, now seen corresponding path program 7 times [2022-10-15 17:12:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:50,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974659003] [2022-10-15 17:12:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-15 17:12:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:51,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974659003] [2022-10-15 17:12:51,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974659003] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:51,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79471220] [2022-10-15 17:12:51,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:12:51,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:51,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:51,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:51,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:12:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:51,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 17:12:51,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-15 17:12:51,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 17:12:53,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79471220] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:53,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:53,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2022-10-15 17:12:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155065164] [2022-10-15 17:12:53,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:53,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-15 17:12:53,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-15 17:12:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2022-10-15 17:12:53,839 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 25 states have internal predecessors, (46), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (24), 8 states have call predecessors, (24), 12 states have call successors, (24) [2022-10-15 17:12:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:53,980 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2022-10-15 17:12:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:12:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 25 states have internal predecessors, (46), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (24), 8 states have call predecessors, (24), 12 states have call successors, (24) Word has length 52 [2022-10-15 17:12:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:53,982 INFO L225 Difference]: With dead ends: 38 [2022-10-15 17:12:53,982 INFO L226 Difference]: Without dead ends: 38 [2022-10-15 17:12:53,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=730, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:12:53,985 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:53,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 106 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:12:53,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-15 17:12:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-15 17:12:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-15 17:12:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-10-15 17:12:53,992 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 52 [2022-10-15 17:12:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:53,993 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-10-15 17:12:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 25 states have internal predecessors, (46), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (24), 8 states have call predecessors, (24), 12 states have call successors, (24) [2022-10-15 17:12:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-10-15 17:12:53,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-15 17:12:53,995 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:53,995 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:54,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:54,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:54,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1351152107, now seen corresponding path program 8 times [2022-10-15 17:12:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013811172] [2022-10-15 17:12:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-15 17:12:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:54,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013811172] [2022-10-15 17:12:54,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013811172] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:54,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816462333] [2022-10-15 17:12:54,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:12:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:54,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:54,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:12:54,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:12:54,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:54,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-15 17:12:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-15 17:12:55,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:12:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-15 17:12:58,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816462333] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:12:58,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:12:58,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 27 [2022-10-15 17:12:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370886167] [2022-10-15 17:12:58,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:12:58,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-15 17:12:58,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:12:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-15 17:12:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2022-10-15 17:12:58,148 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 27 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 27 states have internal predecessors, (50), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (27), 9 states have call predecessors, (27), 13 states have call successors, (27) [2022-10-15 17:12:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:12:58,324 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2022-10-15 17:12:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:12:58,325 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 27 states have internal predecessors, (50), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (27), 9 states have call predecessors, (27), 13 states have call successors, (27) Word has length 58 [2022-10-15 17:12:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:12:58,326 INFO L225 Difference]: With dead ends: 41 [2022-10-15 17:12:58,326 INFO L226 Difference]: Without dead ends: 41 [2022-10-15 17:12:58,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=869, Unknown=0, NotChecked=0, Total=1260 [2022-10-15 17:12:58,330 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:12:58,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 119 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:12:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-15 17:12:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-15 17:12:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 17:12:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-10-15 17:12:58,347 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 58 [2022-10-15 17:12:58,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:12:58,350 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-10-15 17:12:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 27 states have internal predecessors, (50), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (27), 9 states have call predecessors, (27), 13 states have call successors, (27) [2022-10-15 17:12:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-10-15 17:12:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-15 17:12:58,352 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:12:58,352 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:12:58,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:12:58,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-15 17:12:58,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:12:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:12:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1948485675, now seen corresponding path program 9 times [2022-10-15 17:12:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:12:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125832187] [2022-10-15 17:12:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:12:58,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:12:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:12:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:12:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-15 17:12:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:12:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125832187] [2022-10-15 17:12:59,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125832187] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:12:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921724878] [2022-10-15 17:12:59,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:12:59,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:12:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:12:59,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:12:59,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:12:59,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-10-15 17:12:59,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:12:59,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-15 17:12:59,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:12:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-10-15 17:12:59,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:13:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-10-15 17:13:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921724878] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:13:03,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:13:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2022-10-15 17:13:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032242261] [2022-10-15 17:13:03,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:13:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-15 17:13:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-15 17:13:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2022-10-15 17:13:03,376 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 29 states, 26 states have (on average 2.076923076923077) internal successors, (54), 29 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (30), 10 states have call predecessors, (30), 14 states have call successors, (30) [2022-10-15 17:13:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:03,557 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-10-15 17:13:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:13:03,558 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.076923076923077) internal successors, (54), 29 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (30), 10 states have call predecessors, (30), 14 states have call successors, (30) Word has length 64 [2022-10-15 17:13:03,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:03,559 INFO L225 Difference]: With dead ends: 44 [2022-10-15 17:13:03,560 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 17:13:03,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 122 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1020, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:13:03,562 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 272 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:03,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 115 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:13:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 17:13:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-10-15 17:13:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-15 17:13:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2022-10-15 17:13:03,568 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 64 [2022-10-15 17:13:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:03,569 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2022-10-15 17:13:03,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.076923076923077) internal successors, (54), 29 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (30), 10 states have call predecessors, (30), 14 states have call successors, (30) [2022-10-15 17:13:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2022-10-15 17:13:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 17:13:03,570 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:03,571 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:03,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:13:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 17:13:03,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:13:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -582312597, now seen corresponding path program 10 times [2022-10-15 17:13:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:03,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356360994] [2022-10-15 17:13:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-15 17:13:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356360994] [2022-10-15 17:13:04,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356360994] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:13:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549736829] [2022-10-15 17:13:04,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:13:04,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:13:04,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:13:04,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:13:04,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:13:04,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:13:04,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:13:04,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-15 17:13:04,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:13:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-10-15 17:13:04,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:13:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-15 17:13:10,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549736829] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:13:10,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:13:10,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 31 [2022-10-15 17:13:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122181919] [2022-10-15 17:13:10,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:13:10,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-15 17:13:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-15 17:13:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2022-10-15 17:13:10,144 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (33), 11 states have call predecessors, (33), 15 states have call successors, (33) [2022-10-15 17:13:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:10,298 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-10-15 17:13:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 17:13:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (33), 11 states have call predecessors, (33), 15 states have call successors, (33) Word has length 70 [2022-10-15 17:13:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:10,301 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:13:10,301 INFO L226 Difference]: Without dead ends: 47 [2022-10-15 17:13:10,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=539, Invalid=1183, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:13:10,303 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:10,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 147 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:13:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-15 17:13:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-10-15 17:13:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-15 17:13:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-10-15 17:13:10,309 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 70 [2022-10-15 17:13:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:10,310 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-10-15 17:13:10,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (33), 11 states have call predecessors, (33), 15 states have call successors, (33) [2022-10-15 17:13:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-10-15 17:13:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-15 17:13:10,311 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:10,312 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:10,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:13:10,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:13:10,526 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:13:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash 94643157, now seen corresponding path program 11 times [2022-10-15 17:13:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:10,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820076378] [2022-10-15 17:13:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-10-15 17:13:11,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820076378] [2022-10-15 17:13:11,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820076378] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:13:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543047263] [2022-10-15 17:13:11,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:13:11,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:13:11,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:13:11,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:13:11,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 17:13:12,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-10-15 17:13:12,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:13:12,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-15 17:13:12,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:13:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-10-15 17:13:12,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:13:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 17:13:18,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543047263] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:13:18,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:13:18,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2022-10-15 17:13:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954846633] [2022-10-15 17:13:18,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:13:18,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:13:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:13:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:13:18,953 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 33 states, 30 states have (on average 2.066666666666667) internal successors, (62), 33 states have internal predecessors, (62), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (36), 12 states have call predecessors, (36), 16 states have call successors, (36) [2022-10-15 17:13:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:19,161 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2022-10-15 17:13:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:13:19,163 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.066666666666667) internal successors, (62), 33 states have internal predecessors, (62), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (36), 12 states have call predecessors, (36), 16 states have call successors, (36) Word has length 76 [2022-10-15 17:13:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:19,165 INFO L225 Difference]: With dead ends: 50 [2022-10-15 17:13:19,165 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 17:13:19,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 146 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=622, Invalid=1358, Unknown=0, NotChecked=0, Total=1980 [2022-10-15 17:13:19,168 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 241 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:19,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 149 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:13:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 17:13:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-15 17:13:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-15 17:13:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-10-15 17:13:19,174 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 76 [2022-10-15 17:13:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:19,175 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-10-15 17:13:19,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.066666666666667) internal successors, (62), 33 states have internal predecessors, (62), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (36), 12 states have call predecessors, (36), 16 states have call successors, (36) [2022-10-15 17:13:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-10-15 17:13:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-10-15 17:13:19,176 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:19,176 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:19,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 17:13:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 17:13:19,391 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:13:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1862084373, now seen corresponding path program 12 times [2022-10-15 17:13:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:19,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848538616] [2022-10-15 17:13:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-10-15 17:13:20,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:20,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848538616] [2022-10-15 17:13:20,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848538616] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:13:20,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206020795] [2022-10-15 17:13:20,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:13:20,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:13:20,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:13:20,518 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:13:20,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 17:13:20,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-10-15 17:13:20,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:13:20,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-15 17:13:20,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:13:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-10-15 17:13:20,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:13:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-10-15 17:13:29,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206020795] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:13:29,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:13:29,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 29] total 35 [2022-10-15 17:13:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392182227] [2022-10-15 17:13:29,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:13:29,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-15 17:13:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-15 17:13:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 17:13:29,211 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 35 states, 32 states have (on average 2.0625) internal successors, (66), 35 states have internal predecessors, (66), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (39), 13 states have call predecessors, (39), 17 states have call successors, (39) [2022-10-15 17:13:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:29,380 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2022-10-15 17:13:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 17:13:29,381 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.0625) internal successors, (66), 35 states have internal predecessors, (66), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (39), 13 states have call predecessors, (39), 17 states have call successors, (39) Word has length 82 [2022-10-15 17:13:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:29,382 INFO L225 Difference]: With dead ends: 53 [2022-10-15 17:13:29,382 INFO L226 Difference]: Without dead ends: 53 [2022-10-15 17:13:29,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 158 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=711, Invalid=1545, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 17:13:29,384 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 95 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:29,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 144 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:13:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-15 17:13:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-10-15 17:13:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-15 17:13:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2022-10-15 17:13:29,390 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 82 [2022-10-15 17:13:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:29,391 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2022-10-15 17:13:29,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.0625) internal successors, (66), 35 states have internal predecessors, (66), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (39), 13 states have call predecessors, (39), 17 states have call successors, (39) [2022-10-15 17:13:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2022-10-15 17:13:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-15 17:13:29,392 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:29,392 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:29,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-10-15 17:13:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:13:29,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:13:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -799277099, now seen corresponding path program 13 times [2022-10-15 17:13:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:29,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987129544] [2022-10-15 17:13:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:29,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-10-15 17:13:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:30,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987129544] [2022-10-15 17:13:30,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987129544] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:13:30,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955049748] [2022-10-15 17:13:30,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:13:30,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:13:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:13:30,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:13:30,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 17:13:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:31,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-15 17:13:31,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:13:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-10-15 17:13:31,475 INFO L328 TraceCheckSpWp]: Computing backward predicates...