/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:27:00,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:27:00,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:27:00,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:27:00,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:27:00,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:27:00,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:27:00,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:27:00,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:27:00,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:27:00,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:27:00,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:27:00,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:27:00,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:27:00,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:27:00,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:27:00,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:27:00,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:27:00,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:27:00,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:27:00,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:27:00,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:27:00,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:27:00,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:27:00,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:27:00,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:27:00,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:27:00,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:27:00,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:27:00,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:27:00,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:27:00,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:27:00,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:27:00,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:27:00,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:27:00,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:27:00,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:27:00,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:27:00,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:27:00,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:27:00,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:27:00,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:27:00,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:27:00,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:27:00,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:27:00,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:27:00,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:27:00,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:27:00,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:27:00,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:27:00,342 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:27:00,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:27:00,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:27:00,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:27:00,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:27:00,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:27:00,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:27:00,345 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:27:00,345 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:27:00,345 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:27:00,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:27:00,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:27:00,346 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:27:00,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:27:00,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:27:00,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:27:00,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:27:00,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:27:00,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:27:00,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:27:00,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:27:00,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:27:00,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:27:00,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:27:00,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:27:00,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:27:00,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:27:00,834 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:27:00,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c [2022-10-15 16:27:00,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f177efe83/b73d372ab53f43efb57d9e42144e691c/FLAG0016728bc [2022-10-15 16:27:01,583 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:27:01,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c [2022-10-15 16:27:01,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f177efe83/b73d372ab53f43efb57d9e42144e691c/FLAG0016728bc [2022-10-15 16:27:01,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f177efe83/b73d372ab53f43efb57d9e42144e691c [2022-10-15 16:27:01,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:27:01,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:27:01,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:27:01,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:27:01,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:27:01,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:27:01" (1/1) ... [2022-10-15 16:27:01,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d0989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:01, skipping insertion in model container [2022-10-15 16:27:01,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:27:01" (1/1) ... [2022-10-15 16:27:01,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:27:01,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:27:02,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c[331,344] [2022-10-15 16:27:02,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:27:02,202 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:27:02,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c[331,344] [2022-10-15 16:27:02,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:27:02,244 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:27:02,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02 WrapperNode [2022-10-15 16:27:02,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:27:02,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:27:02,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:27:02,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:27:02,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,300 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-10-15 16:27:02,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:27:02,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:27:02,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:27:02,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:27:02,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,328 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:27:02,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:27:02,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:27:02,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:27:02,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (1/1) ... [2022-10-15 16:27:02,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:27:02,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:02,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:27:02,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:27:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:27:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:27:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:27:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:27:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:27:02,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:27:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:27:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:27:02,572 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:27:02,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:27:02,898 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:27:02,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:27:02,916 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:27:02,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:27:02 BoogieIcfgContainer [2022-10-15 16:27:02,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:27:02,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:27:02,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:27:02,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:27:02,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:27:01" (1/3) ... [2022-10-15 16:27:02,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c12a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:27:02, skipping insertion in model container [2022-10-15 16:27:02,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:02" (2/3) ... [2022-10-15 16:27:02,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c12a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:27:02, skipping insertion in model container [2022-10-15 16:27:02,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:27:02" (3/3) ... [2022-10-15 16:27:02,948 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_3.c [2022-10-15 16:27:03,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:27:03,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-15 16:27:03,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:27:03,135 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;@569327d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:27:03,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-15 16:27:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.826086956521739) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:27:03,170 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:03,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:27:03,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:03,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-10-15 16:27:03,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:03,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957500185] [2022-10-15 16:27:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:03,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:03,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552922923] [2022-10-15 16:27:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:03,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:03,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:03,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:27:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:03,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-15 16:27:03,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:03,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:03,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:03,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957500185] [2022-10-15 16:27:03,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:03,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552922923] [2022-10-15 16:27:03,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552922923] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:03,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:03,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:27:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552983488] [2022-10-15 16:27:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:03,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 16:27:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 16:27:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 16:27:03,625 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.826086956521739) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:03,646 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-10-15 16:27:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 16:27:03,650 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:27:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:03,663 INFO L225 Difference]: With dead ends: 34 [2022-10-15 16:27:03,663 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 16:27:03,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 16:27:03,682 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:03,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:27:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 16:27:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-15 16:27:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-10-15 16:27:03,727 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2022-10-15 16:27:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:03,728 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-10-15 16:27:03,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-10-15 16:27:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:27:03,730 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:03,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:27:03,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:03,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-15 16:27:03,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2022-10-15 16:27:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:03,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438805876] [2022-10-15 16:27:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:03,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:03,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679325317] [2022-10-15 16:27:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:03,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:03,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:03,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:03,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:27:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:27:04,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:04,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:04,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438805876] [2022-10-15 16:27:04,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679325317] [2022-10-15 16:27:04,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679325317] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:04,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:04,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:27:04,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456129610] [2022-10-15 16:27:04,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:04,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:27:04,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:27:04,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:27:04,169 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:04,211 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-15 16:27:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:27:04,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:27:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:04,213 INFO L225 Difference]: With dead ends: 28 [2022-10-15 16:27:04,213 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 16:27:04,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:27:04,216 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:04,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:27:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 16:27:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-15 16:27:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-15 16:27:04,223 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2022-10-15 16:27:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:04,223 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-15 16:27:04,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-15 16:27:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:27:04,224 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:04,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:27:04,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:04,439 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,SelfDestructingSolverStorable1 [2022-10-15 16:27:04,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-10-15 16:27:04,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:04,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123783464] [2022-10-15 16:27:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:04,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:04,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:04,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404498372] [2022-10-15 16:27:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:04,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:04,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:04,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:27:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:04,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:27:04,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:04,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:04,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123783464] [2022-10-15 16:27:04,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:04,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404498372] [2022-10-15 16:27:04,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404498372] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:04,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:04,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:27:04,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499430509] [2022-10-15 16:27:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:04,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:27:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:27:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:27:04,654 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:04,787 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-10-15 16:27:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:27:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:27:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:04,789 INFO L225 Difference]: With dead ends: 43 [2022-10-15 16:27:04,789 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 16:27:04,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:27:04,792 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 86 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:04,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 24 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 16:27:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-10-15 16:27:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-10-15 16:27:04,800 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 6 [2022-10-15 16:27:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:04,800 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-10-15 16:27:04,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-10-15 16:27:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:27:04,802 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:04,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:04,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:05,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:05,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash -866549681, now seen corresponding path program 1 times [2022-10-15 16:27:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:05,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714117567] [2022-10-15 16:27:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:05,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:05,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:05,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983793533] [2022-10-15 16:27:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:05,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:05,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:05,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:05,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 16:27:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:05,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:27:05,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:05,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-15 16:27:05,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-15 16:27:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:05,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714117567] [2022-10-15 16:27:05,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983793533] [2022-10-15 16:27:05,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983793533] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:05,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:05,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:27:05,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268165303] [2022-10-15 16:27:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:05,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:27:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:27:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:27:05,235 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:05,352 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-15 16:27:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:27:05,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 16:27:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:05,354 INFO L225 Difference]: With dead ends: 43 [2022-10-15 16:27:05,354 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 16:27:05,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:27:05,357 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:05,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 16:27:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-10-15 16:27:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-10-15 16:27:05,364 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2022-10-15 16:27:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-10-15 16:27:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-10-15 16:27:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:27:05,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:05,366 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:05,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:05,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -866490099, now seen corresponding path program 1 times [2022-10-15 16:27:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:05,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213083194] [2022-10-15 16:27:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:05,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:05,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:05,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048086641] [2022-10-15 16:27:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:05,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:05,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:05,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:05,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 16:27:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:05,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:27:05,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:05,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:05,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:06,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213083194] [2022-10-15 16:27:06,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:06,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048086641] [2022-10-15 16:27:06,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048086641] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:06,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:06,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-10-15 16:27:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337332323] [2022-10-15 16:27:06,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:06,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:06,060 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:06,391 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2022-10-15 16:27:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:27:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 16:27:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:06,393 INFO L225 Difference]: With dead ends: 80 [2022-10-15 16:27:06,394 INFO L226 Difference]: Without dead ends: 80 [2022-10-15 16:27:06,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:27:06,396 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 266 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:06,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:27:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-15 16:27:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2022-10-15 16:27:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 69 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2022-10-15 16:27:06,407 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2022-10-15 16:27:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:06,407 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2022-10-15 16:27:06,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2022-10-15 16:27:06,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 16:27:06,409 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:06,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:06,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:06,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:06,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1405816076, now seen corresponding path program 1 times [2022-10-15 16:27:06,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:06,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167187682] [2022-10-15 16:27:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:06,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:06,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647685817] [2022-10-15 16:27:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:06,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:06,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:06,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 16:27:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:06,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 16:27:06,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:06,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:06,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167187682] [2022-10-15 16:27:06,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647685817] [2022-10-15 16:27:06,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647685817] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:06,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:06,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-15 16:27:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912324076] [2022-10-15 16:27:06,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:06,902 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:07,100 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2022-10-15 16:27:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:27:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-15 16:27:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:07,102 INFO L225 Difference]: With dead ends: 107 [2022-10-15 16:27:07,102 INFO L226 Difference]: Without dead ends: 107 [2022-10-15 16:27:07,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:27:07,104 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 338 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 57 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-15 16:27:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2022-10-15 16:27:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 94 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2022-10-15 16:27:07,115 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 24 [2022-10-15 16:27:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:07,115 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2022-10-15 16:27:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2022-10-15 16:27:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 16:27:07,117 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:07,117 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:07,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 16:27:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:07,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash 952498338, now seen corresponding path program 1 times [2022-10-15 16:27:07,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:07,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825386902] [2022-10-15 16:27:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:07,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:07,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058320871] [2022-10-15 16:27:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:07,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:07,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:07,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:07,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 16:27:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:07,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 16:27:07,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:07,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-15 16:27:07,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-15 16:27:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 16:27:07,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 16:27:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825386902] [2022-10-15 16:27:07,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058320871] [2022-10-15 16:27:07,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058320871] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:07,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:07,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-10-15 16:27:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719338270] [2022-10-15 16:27:07,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:07,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:07,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:07,600 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:07,834 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2022-10-15 16:27:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 16:27:07,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-15 16:27:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:07,838 INFO L225 Difference]: With dead ends: 106 [2022-10-15 16:27:07,838 INFO L226 Difference]: Without dead ends: 106 [2022-10-15 16:27:07,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:27:07,841 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 85 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:07,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 126 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:07,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-15 16:27:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2022-10-15 16:27:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 96 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-10-15 16:27:07,853 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 30 [2022-10-15 16:27:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:07,853 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-10-15 16:27:07,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2022-10-15 16:27:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 16:27:07,858 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:07,858 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 16:27:07,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:08,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -461537444, now seen corresponding path program 2 times [2022-10-15 16:27:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:08,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477230918] [2022-10-15 16:27:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:08,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:08,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462662678] [2022-10-15 16:27:08,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:08,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:08,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:08,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:08,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 16:27:08,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:08,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:08,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 16:27:08,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:08,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:08,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477230918] [2022-10-15 16:27:08,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:08,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462662678] [2022-10-15 16:27:08,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462662678] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:08,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:08,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-10-15 16:27:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187392580] [2022-10-15 16:27:08,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 16:27:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 16:27:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:27:08,713 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:09,336 INFO L93 Difference]: Finished difference Result 177 states and 207 transitions. [2022-10-15 16:27:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 16:27:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-15 16:27:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:09,340 INFO L225 Difference]: With dead ends: 177 [2022-10-15 16:27:09,340 INFO L226 Difference]: Without dead ends: 177 [2022-10-15 16:27:09,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2022-10-15 16:27:09,342 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 957 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:09,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 229 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:27:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-15 16:27:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 151. [2022-10-15 16:27:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 150 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 190 transitions. [2022-10-15 16:27:09,371 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 190 transitions. Word has length 30 [2022-10-15 16:27:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:09,371 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 190 transitions. [2022-10-15 16:27:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 190 transitions. [2022-10-15 16:27:09,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-15 16:27:09,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:09,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:09,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:09,578 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,SelfDestructingSolverStorable7 [2022-10-15 16:27:09,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1297939658, now seen corresponding path program 2 times [2022-10-15 16:27:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236902335] [2022-10-15 16:27:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:09,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884337646] [2022-10-15 16:27:09,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:09,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:09,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 16:27:09,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:27:09,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:27:09,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 16:27:10,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:10,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236902335] [2022-10-15 16:27:10,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884337646] [2022-10-15 16:27:10,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884337646] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:10,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:10,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:27:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295898637] [2022-10-15 16:27:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:27:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:27:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:27:10,086 INFO L87 Difference]: Start difference. First operand 151 states and 190 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:10,202 INFO L93 Difference]: Finished difference Result 298 states and 361 transitions. [2022-10-15 16:27:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:27:10,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-10-15 16:27:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:10,205 INFO L225 Difference]: With dead ends: 298 [2022-10-15 16:27:10,205 INFO L226 Difference]: Without dead ends: 298 [2022-10-15 16:27:10,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:27:10,208 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:10,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 84 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-10-15 16:27:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 282. [2022-10-15 16:27:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 1.2553956834532374) internal successors, (349), 281 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:10,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 349 transitions. [2022-10-15 16:27:10,234 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 349 transitions. Word has length 48 [2022-10-15 16:27:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:10,235 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 349 transitions. [2022-10-15 16:27:10,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 349 transitions. [2022-10-15 16:27:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 16:27:10,238 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:10,241 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:10,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:10,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:10,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:10,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 794730726, now seen corresponding path program 1 times [2022-10-15 16:27:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:10,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728798496] [2022-10-15 16:27:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:10,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:10,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516002968] [2022-10-15 16:27:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:10,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:10,480 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:10,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 16:27:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:10,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:27:10,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:10,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:10,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728798496] [2022-10-15 16:27:10,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516002968] [2022-10-15 16:27:10,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516002968] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:10,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:10,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-15 16:27:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399824984] [2022-10-15 16:27:10,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:10,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 16:27:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 16:27:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:27:10,924 INFO L87 Difference]: Start difference. First operand 282 states and 349 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:11,340 INFO L93 Difference]: Finished difference Result 418 states and 485 transitions. [2022-10-15 16:27:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 16:27:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-10-15 16:27:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:11,344 INFO L225 Difference]: With dead ends: 418 [2022-10-15 16:27:11,344 INFO L226 Difference]: Without dead ends: 418 [2022-10-15 16:27:11,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=265, Invalid=335, Unknown=0, NotChecked=0, Total=600 [2022-10-15 16:27:11,345 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 890 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:11,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 125 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:27:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-10-15 16:27:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 388. [2022-10-15 16:27:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 384 states have (on average 1.2317708333333333) internal successors, (473), 387 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 473 transitions. [2022-10-15 16:27:11,358 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 473 transitions. Word has length 55 [2022-10-15 16:27:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:11,358 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 473 transitions. [2022-10-15 16:27:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 473 transitions. [2022-10-15 16:27:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 16:27:11,360 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:11,360 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1] [2022-10-15 16:27:11,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:11,576 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,SelfDestructingSolverStorable9 [2022-10-15 16:27:11,577 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash -523171898, now seen corresponding path program 2 times [2022-10-15 16:27:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:11,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692397041] [2022-10-15 16:27:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:11,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:11,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138553718] [2022-10-15 16:27:11,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:11,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:11,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:11,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 16:27:11,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:11,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:11,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-15 16:27:11,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:11,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:12,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:12,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692397041] [2022-10-15 16:27:12,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:12,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138553718] [2022-10-15 16:27:12,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138553718] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:12,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:12,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2022-10-15 16:27:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221359442] [2022-10-15 16:27:12,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:12,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-15 16:27:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:12,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-15 16:27:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-10-15 16:27:12,836 INFO L87 Difference]: Start difference. First operand 388 states and 473 transitions. Second operand has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:15,084 INFO L93 Difference]: Finished difference Result 668 states and 797 transitions. [2022-10-15 16:27:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-15 16:27:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-15 16:27:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:15,089 INFO L225 Difference]: With dead ends: 668 [2022-10-15 16:27:15,089 INFO L226 Difference]: Without dead ends: 668 [2022-10-15 16:27:15,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=732, Invalid=1818, Unknown=0, NotChecked=0, Total=2550 [2022-10-15 16:27:15,092 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 3013 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:15,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 1012 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 16:27:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-10-15 16:27:15,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 612. [2022-10-15 16:27:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 608 states have (on average 1.2516447368421053) internal successors, (761), 611 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 761 transitions. [2022-10-15 16:27:15,109 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 761 transitions. Word has length 66 [2022-10-15 16:27:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:15,110 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 761 transitions. [2022-10-15 16:27:15,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 761 transitions. [2022-10-15 16:27:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-15 16:27:15,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:15,112 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:15,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:15,325 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,SelfDestructingSolverStorable10 [2022-10-15 16:27:15,326 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 17067694, now seen corresponding path program 2 times [2022-10-15 16:27:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:15,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074040195] [2022-10-15 16:27:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:15,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:15,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973618032] [2022-10-15 16:27:15,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:15,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:15,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:15,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:15,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 16:27:15,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:15,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:15,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 16:27:15,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:15,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:16,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074040195] [2022-10-15 16:27:16,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973618032] [2022-10-15 16:27:16,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973618032] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:16,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:16,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-15 16:27:16,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63708883] [2022-10-15 16:27:16,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:16,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 16:27:16,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 16:27:16,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 16:27:16,426 INFO L87 Difference]: Start difference. First operand 612 states and 761 transitions. Second operand has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 33 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:17,697 INFO L93 Difference]: Finished difference Result 898 states and 1045 transitions. [2022-10-15 16:27:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-15 16:27:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 33 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-10-15 16:27:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:17,702 INFO L225 Difference]: With dead ends: 898 [2022-10-15 16:27:17,702 INFO L226 Difference]: Without dead ends: 898 [2022-10-15 16:27:17,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2022-10-15 16:27:17,704 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2051 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:17,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 259 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 16:27:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-10-15 16:27:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 828. [2022-10-15 16:27:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 824 states have (on average 1.2342233009708738) internal successors, (1017), 827 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1017 transitions. [2022-10-15 16:27:17,725 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1017 transitions. Word has length 103 [2022-10-15 16:27:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:17,726 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1017 transitions. [2022-10-15 16:27:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 33 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1017 transitions. [2022-10-15 16:27:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-15 16:27:17,727 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:17,728 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 18, 4, 1, 1, 1, 1, 1] [2022-10-15 16:27:17,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:17,942 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,SelfDestructingSolverStorable11 [2022-10-15 16:27:17,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:17,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1517769114, now seen corresponding path program 3 times [2022-10-15 16:27:17,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:17,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218138260] [2022-10-15 16:27:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:17,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670353673] [2022-10-15 16:27:17,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:27:17,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:17,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:17,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:18,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 16:27:18,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:27:18,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:27:18,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:18,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-15 16:27:18,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-10-15 16:27:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 107 proven. 21 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-15 16:27:18,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 65 proven. 63 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-15 16:27:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:18,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218138260] [2022-10-15 16:27:18,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:18,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670353673] [2022-10-15 16:27:18,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670353673] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:18,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:18,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-10-15 16:27:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189008085] [2022-10-15 16:27:18,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:27:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:27:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:27:18,434 INFO L87 Difference]: Start difference. First operand 828 states and 1017 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:18,492 INFO L93 Difference]: Finished difference Result 873 states and 1051 transitions. [2022-10-15 16:27:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:27:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-10-15 16:27:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:18,496 INFO L225 Difference]: With dead ends: 873 [2022-10-15 16:27:18,497 INFO L226 Difference]: Without dead ends: 873 [2022-10-15 16:27:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:27:18,498 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 53 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:27:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-10-15 16:27:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 858. [2022-10-15 16:27:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 854 states have (on average 1.2131147540983607) internal successors, (1036), 857 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1036 transitions. [2022-10-15 16:27:18,517 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1036 transitions. Word has length 138 [2022-10-15 16:27:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:18,517 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1036 transitions. [2022-10-15 16:27:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1036 transitions. [2022-10-15 16:27:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-15 16:27:18,519 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:18,519 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2022-10-15 16:27:18,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 16:27:18,734 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash 101698678, now seen corresponding path program 3 times [2022-10-15 16:27:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:18,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626150311] [2022-10-15 16:27:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:18,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:18,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:18,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288250242] [2022-10-15 16:27:18,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:27:18,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:18,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:18,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:18,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 16:27:18,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:27:18,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:18,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:27:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:18,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 106 proven. 22 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-15 16:27:19,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-15 16:27:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:20,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626150311] [2022-10-15 16:27:20,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:20,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288250242] [2022-10-15 16:27:20,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288250242] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:20,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:20,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-15 16:27:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987197171] [2022-10-15 16:27:20,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:20,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:20,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:20,182 INFO L87 Difference]: Start difference. First operand 858 states and 1036 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:20,294 INFO L93 Difference]: Finished difference Result 856 states and 1004 transitions. [2022-10-15 16:27:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:27:20,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-10-15 16:27:20,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:20,300 INFO L225 Difference]: With dead ends: 856 [2022-10-15 16:27:20,300 INFO L226 Difference]: Without dead ends: 856 [2022-10-15 16:27:20,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-10-15 16:27:20,301 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:20,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 37 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-10-15 16:27:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2022-10-15 16:27:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 854 states have (on average 1.1756440281030445) internal successors, (1004), 855 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1004 transitions. [2022-10-15 16:27:20,321 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1004 transitions. Word has length 138 [2022-10-15 16:27:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:20,322 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1004 transitions. [2022-10-15 16:27:20,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1004 transitions. [2022-10-15 16:27:20,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-10-15 16:27:20,325 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:20,325 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:20,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-10-15 16:27:20,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:20,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1917223666, now seen corresponding path program 1 times [2022-10-15 16:27:20,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:20,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82493210] [2022-10-15 16:27:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:20,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:20,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403690164] [2022-10-15 16:27:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:20,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:20,586 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:20,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 16:27:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:20,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 16:27:20,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:21,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:23,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:23,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82493210] [2022-10-15 16:27:23,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:23,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403690164] [2022-10-15 16:27:23,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403690164] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:23,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:23,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-15 16:27:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042973701] [2022-10-15 16:27:23,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-15 16:27:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-15 16:27:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2022-10-15 16:27:23,939 INFO L87 Difference]: Start difference. First operand 856 states and 1004 transitions. Second operand has 66 states, 66 states have (on average 5.757575757575758) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:29,073 INFO L93 Difference]: Finished difference Result 1888 states and 2136 transitions. [2022-10-15 16:27:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-15 16:27:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.757575757575758) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2022-10-15 16:27:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:29,083 INFO L225 Difference]: With dead ends: 1888 [2022-10-15 16:27:29,083 INFO L226 Difference]: Without dead ends: 1888 [2022-10-15 16:27:29,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4129, Invalid=5183, Unknown=0, NotChecked=0, Total=9312 [2022-10-15 16:27:29,088 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3529 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3529 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:29,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3529 Valid, 494 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-15 16:27:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-10-15 16:27:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1768. [2022-10-15 16:27:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1766 states have (on average 1.175537938844847) internal successors, (2076), 1767 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2076 transitions. [2022-10-15 16:27:29,130 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2076 transitions. Word has length 199 [2022-10-15 16:27:29,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:29,131 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2076 transitions. [2022-10-15 16:27:29,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.757575757575758) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2076 transitions. [2022-10-15 16:27:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-10-15 16:27:29,138 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:29,138 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:29,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:29,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 16:27:29,354 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-15 16:27:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1568772690, now seen corresponding path program 2 times [2022-10-15 16:27:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:29,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598793541] [2022-10-15 16:27:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:29,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:29,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551017066] [2022-10-15 16:27:29,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:29,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:29,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:29,416 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:29,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-15 16:27:29,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:29,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:29,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-15 16:27:29,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:33,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598793541] [2022-10-15 16:27:47,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551017066] [2022-10-15 16:27:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551017066] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:47,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:47,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2022-10-15 16:27:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850591308] [2022-10-15 16:27:47,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:47,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-10-15 16:27:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:47,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-10-15 16:27:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8259, Invalid=8511, Unknown=0, NotChecked=0, Total=16770 [2022-10-15 16:27:47,694 INFO L87 Difference]: Start difference. First operand 1768 states and 2076 transitions. Second operand has 130 states, 130 states have (on average 5.876923076923077) internal successors, (764), 129 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)