/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_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:27:29,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:27:29,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:27:29,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:27:29,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:27:29,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:27:29,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:27:29,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:27:29,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:27:29,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:27:29,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:27:29,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:27:29,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:27:29,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:27:29,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:27:29,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:27:29,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:27:29,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:27:29,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:27:29,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:27:29,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:27:29,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:27:29,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:27:29,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:27:29,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:27:29,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:27:29,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:27:29,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:27:29,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:27:29,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:27:29,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:27:29,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:27:29,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:27:29,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:27:29,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:27:29,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:27:29,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:27:29,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:27:29,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:27:29,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:27:29,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:27:29,320 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 16:27:29,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:27:29,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:27:29,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:27:29,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:27:29,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:27:29,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:27:29,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:27:29,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:27:29,389 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:27:29,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:27:29,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:27:29,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:27:29,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:27:29,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:27:29,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:27:29,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:27:29,392 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:27:29,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:27:29,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:27:29,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:27:29,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:27:29,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:27:29,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:27:29,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:27:29,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:27:29,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:27:29,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:27:29,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:27:29,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:27:29,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:27:29,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:27:29,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:27:29,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:27:29,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:27:29,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:27:29,901 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:27:29,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2022-10-15 16:27:29,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f900ee4eb/d992faa098334766816acc153dec87aa/FLAG427a4b029 [2022-10-15 16:27:30,572 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:27:30,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2022-10-15 16:27:30,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f900ee4eb/d992faa098334766816acc153dec87aa/FLAG427a4b029 [2022-10-15 16:27:30,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f900ee4eb/d992faa098334766816acc153dec87aa [2022-10-15 16:27:30,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:27:30,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:27:30,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:27:30,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:27:30,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:27:30,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:27:30" (1/1) ... [2022-10-15 16:27:30,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb34f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:30, skipping insertion in model container [2022-10-15 16:27:30,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:27:30" (1/1) ... [2022-10-15 16:27:30,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:27:31,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:27:31,224 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_4.c[331,344] [2022-10-15 16:27:31,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:27:31,256 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:27:31,269 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_4.c[331,344] [2022-10-15 16:27:31,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:27:31,294 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:27:31,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31 WrapperNode [2022-10-15 16:27:31,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:27:31,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:27:31,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:27:31,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:27:31,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,340 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-10-15 16:27:31,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:27:31,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:27:31,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:27:31,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:27:31,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:27:31,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:27:31,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:27:31,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:27:31,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (1/1) ... [2022-10-15 16:27:31,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:27:31,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:31,425 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 16:27:31,437 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 16:27:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:27:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:27:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:27:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:27:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:27:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:27:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:27:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:27:31,605 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:27:31,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:27:31,908 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:27:31,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:27:31,915 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:27:31,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:27:31 BoogieIcfgContainer [2022-10-15 16:27:31,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:27:31,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:27:31,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:27:31,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:27:31,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:27:30" (1/3) ... [2022-10-15 16:27:31,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690c4757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:27:31, skipping insertion in model container [2022-10-15 16:27:31,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:27:31" (2/3) ... [2022-10-15 16:27:31,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690c4757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:27:31, skipping insertion in model container [2022-10-15 16:27:31,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:27:31" (3/3) ... [2022-10-15 16:27:31,928 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_4.c [2022-10-15 16:27:31,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:27:31,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-15 16:27:32,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:27:32,011 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;@2c9ca9e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:27:32,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-15 16:27:32,018 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 16:27:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:27:32,025 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:32,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:27:32,027 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 16:27:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-10-15 16:27:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996537487] [2022-10-15 16:27:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:32,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:32,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:32,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023396693] [2022-10-15 16:27:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:32,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:32,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:32,154 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 16:27:32,176 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 16:27:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:32,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-15 16:27:32,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:32,272 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 16:27:32,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996537487] [2022-10-15 16:27:32,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023396693] [2022-10-15 16:27:32,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023396693] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:32,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:32,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:27:32,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657089173] [2022-10-15 16:27:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 16:27:32,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 16:27:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 16:27:32,315 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 16:27:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:32,331 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-10-15 16:27:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 16:27:32,334 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 16:27:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:32,342 INFO L225 Difference]: With dead ends: 34 [2022-10-15 16:27:32,343 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 16:27:32,345 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 16:27:32,350 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 16:27:32,351 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 16:27:32,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 16:27:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-15 16:27:32,385 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 16:27:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-10-15 16:27:32,388 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2022-10-15 16:27:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:32,388 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-10-15 16:27:32,388 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 16:27:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-10-15 16:27:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:27:32,389 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:32,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:27:32,417 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 16:27:32,602 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 16:27:32,603 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 16:27:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2022-10-15 16:27:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:32,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512488913] [2022-10-15 16:27:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:32,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:32,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840319271] [2022-10-15 16:27:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:32,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:32,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:32,646 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 16:27:32,650 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 16:27:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:32,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:27:32,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:32,758 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 16:27:32,777 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 16:27:32,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:32,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512488913] [2022-10-15 16:27:32,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840319271] [2022-10-15 16:27:32,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840319271] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:32,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:32,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:27:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244295817] [2022-10-15 16:27:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:32,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:27:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:27:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:27:32,782 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 16:27:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:32,813 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-15 16:27:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:27:32,814 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 16:27:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:32,815 INFO L225 Difference]: With dead ends: 28 [2022-10-15 16:27:32,815 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 16:27:32,815 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 16:27:32,817 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 16:27:32,818 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 16:27:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 16:27:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-15 16:27:32,822 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 16:27:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-15 16:27:32,823 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2022-10-15 16:27:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:32,824 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-15 16:27:32,824 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 16:27:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-15 16:27:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:27:32,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:32,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:27:32,855 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 16:27:33,038 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 16:27:33,039 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 16:27:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:33,042 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-10-15 16:27:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:33,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326306407] [2022-10-15 16:27:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:33,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996056576] [2022-10-15 16:27:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:33,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:33,077 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 16:27:33,093 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 16:27:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:33,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:27:33,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:33,220 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 16:27:33,299 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 16:27:33,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:33,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326306407] [2022-10-15 16:27:33,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:33,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996056576] [2022-10-15 16:27:33,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996056576] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:33,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:33,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:27:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618445666] [2022-10-15 16:27:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:27:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:27:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:27:33,310 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 16:27:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:33,481 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-10-15 16:27:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:27:33,482 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 16:27:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:33,485 INFO L225 Difference]: With dead ends: 43 [2022-10-15 16:27:33,485 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 16:27:33,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:27:33,496 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 16:27:33,500 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 16:27:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 16:27:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-10-15 16:27:33,509 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 16:27:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-10-15 16:27:33,511 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 6 [2022-10-15 16:27:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-10-15 16:27:33,512 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 16:27:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-10-15 16:27:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:27:33,512 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:33,514 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:33,542 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 16:27:33,727 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 16:27:33,728 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 16:27:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash -866549681, now seen corresponding path program 1 times [2022-10-15 16:27:33,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:33,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111856721] [2022-10-15 16:27:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:33,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:33,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484768769] [2022-10-15 16:27:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:33,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:33,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:33,748 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 16:27:33,775 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 16:27:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:27:33,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:33,847 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 16:27:33,881 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 16:27:33,889 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 16:27:33,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:33,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:33,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111856721] [2022-10-15 16:27:33,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:33,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484768769] [2022-10-15 16:27:33,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484768769] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:33,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:33,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:27:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474758609] [2022-10-15 16:27:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:33,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:27:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:27:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:27:33,894 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 16:27:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:33,972 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-15 16:27:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:27:33,973 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 16:27:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:33,974 INFO L225 Difference]: With dead ends: 43 [2022-10-15 16:27:33,974 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 16:27:33,975 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 16:27:33,976 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 16:27:33,977 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 16:27:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 16:27:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-10-15 16:27:33,982 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 16:27:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-10-15 16:27:33,983 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2022-10-15 16:27:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:33,983 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-10-15 16:27:33,984 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 16:27:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-10-15 16:27:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:27:33,984 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:33,985 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:34,020 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 16:27:34,199 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 16:27:34,200 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 16:27:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash -866490099, now seen corresponding path program 1 times [2022-10-15 16:27:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590307817] [2022-10-15 16:27:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:34,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:34,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135666836] [2022-10-15 16:27:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:34,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:34,222 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 16:27:34,241 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 16:27:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:34,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:27:34,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:34,319 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 16:27:34,449 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 16:27:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:34,580 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 16:27:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590307817] [2022-10-15 16:27:34,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135666836] [2022-10-15 16:27:34,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135666836] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:34,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:34,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-10-15 16:27:34,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655199435] [2022-10-15 16:27:34,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:34,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:34,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:34,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:34,584 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 16:27:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:34,841 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2022-10-15 16:27:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:27:34,842 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 16:27:34,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:34,843 INFO L225 Difference]: With dead ends: 80 [2022-10-15 16:27:34,843 INFO L226 Difference]: Without dead ends: 80 [2022-10-15 16:27:34,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:27:34,845 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 266 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 16:27:34,846 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 16:27:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-15 16:27:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2022-10-15 16:27:34,853 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 16:27:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2022-10-15 16:27:34,855 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2022-10-15 16:27:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:34,855 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2022-10-15 16:27:34,855 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 16:27:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2022-10-15 16:27:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 16:27:34,856 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:34,857 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 16:27:34,894 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 16:27:35,071 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 16:27:35,071 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 16:27:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1405816076, now seen corresponding path program 1 times [2022-10-15 16:27:35,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:35,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961972090] [2022-10-15 16:27:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:35,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:35,086 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:35,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028432852] [2022-10-15 16:27:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:35,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:35,088 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 16:27:35,107 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 16:27:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:35,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 16:27:35,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:35,239 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 16:27:35,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:35,301 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 16:27:35,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:35,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961972090] [2022-10-15 16:27:35,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:35,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028432852] [2022-10-15 16:27:35,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028432852] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:35,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:35,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-15 16:27:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552818133] [2022-10-15 16:27:35,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:35,305 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 16:27:35,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:35,495 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2022-10-15 16:27:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:27:35,496 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 16:27:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:35,498 INFO L225 Difference]: With dead ends: 107 [2022-10-15 16:27:35,498 INFO L226 Difference]: Without dead ends: 107 [2022-10-15 16:27:35,498 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 16:27:35,499 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 16:27:35,500 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 16:27:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-15 16:27:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2022-10-15 16:27:35,507 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 16:27:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2022-10-15 16:27:35,509 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 24 [2022-10-15 16:27:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:35,510 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2022-10-15 16:27:35,510 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 16:27:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2022-10-15 16:27:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 16:27:35,511 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:35,511 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:35,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:35,724 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 16:27:35,725 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 16:27:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 952498338, now seen corresponding path program 1 times [2022-10-15 16:27:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:35,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413420236] [2022-10-15 16:27:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:35,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:35,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239228833] [2022-10-15 16:27:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:35,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:35,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:35,745 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 16:27:35,764 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 16:27:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:35,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 16:27:35,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:35,846 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 16:27:35,875 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 16:27:35,882 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 16:27:35,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:35,937 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 16:27:35,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:35,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413420236] [2022-10-15 16:27:35,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239228833] [2022-10-15 16:27:35,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239228833] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:35,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:35,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-10-15 16:27:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492229950] [2022-10-15 16:27:35,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:35,940 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 16:27:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:36,181 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2022-10-15 16:27:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 16:27:36,182 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 16:27:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:36,183 INFO L225 Difference]: With dead ends: 106 [2022-10-15 16:27:36,184 INFO L226 Difference]: Without dead ends: 106 [2022-10-15 16:27:36,184 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 16:27:36,185 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 16:27:36,186 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 16:27:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-15 16:27:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2022-10-15 16:27:36,193 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 16:27:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-10-15 16:27:36,195 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 30 [2022-10-15 16:27:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:36,195 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-10-15 16:27:36,196 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 16:27:36,196 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2022-10-15 16:27:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 16:27:36,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:36,197 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 16:27:36,235 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 16:27:36,411 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 16:27:36,411 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 16:27:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash -461537444, now seen corresponding path program 2 times [2022-10-15 16:27:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:36,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240052890] [2022-10-15 16:27:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:36,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:36,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:36,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841300916] [2022-10-15 16:27:36,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:36,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:36,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:36,431 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 16:27:36,450 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 16:27:36,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:36,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:36,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 16:27:36,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:36,536 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 16:27:36,758 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 16:27:36,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:37,013 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 16:27:37,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240052890] [2022-10-15 16:27:37,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841300916] [2022-10-15 16:27:37,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841300916] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:37,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:37,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-10-15 16:27:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870079429] [2022-10-15 16:27:37,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:37,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 16:27:37,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 16:27:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:27:37,017 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 16:27:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:37,681 INFO L93 Difference]: Finished difference Result 177 states and 207 transitions. [2022-10-15 16:27:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 16:27:37,682 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 16:27:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:37,685 INFO L225 Difference]: With dead ends: 177 [2022-10-15 16:27:37,685 INFO L226 Difference]: Without dead ends: 177 [2022-10-15 16:27:37,685 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 16:27:37,686 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 16:27:37,687 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 16:27:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-15 16:27:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 151. [2022-10-15 16:27:37,696 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 16:27:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 190 transitions. [2022-10-15 16:27:37,697 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 190 transitions. Word has length 30 [2022-10-15 16:27:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:37,698 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 190 transitions. [2022-10-15 16:27:37,698 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 16:27:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 190 transitions. [2022-10-15 16:27:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-15 16:27:37,700 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:37,700 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 16:27:37,739 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 16:27:37,904 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 16:27:37,905 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 16:27:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1297939658, now seen corresponding path program 2 times [2022-10-15 16:27:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:37,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737349893] [2022-10-15 16:27:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:37,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:37,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933652678] [2022-10-15 16:27:37,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:37,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:37,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:37,928 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 16:27:37,950 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 16:27:38,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:27:38,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:27:38,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:38,345 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 16:27:38,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737349893] [2022-10-15 16:27:38,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933652678] [2022-10-15 16:27:38,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933652678] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:38,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:38,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:27:38,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247472773] [2022-10-15 16:27:38,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:38,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:27:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:27:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:27:38,352 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 16:27:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:38,492 INFO L93 Difference]: Finished difference Result 298 states and 361 transitions. [2022-10-15 16:27:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:27:38,492 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 16:27:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:38,496 INFO L225 Difference]: With dead ends: 298 [2022-10-15 16:27:38,496 INFO L226 Difference]: Without dead ends: 298 [2022-10-15 16:27:38,496 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 16:27:38,497 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 16:27:38,497 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 16:27:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-10-15 16:27:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 282. [2022-10-15 16:27:38,522 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 16:27:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 349 transitions. [2022-10-15 16:27:38,523 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 349 transitions. Word has length 48 [2022-10-15 16:27:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:38,524 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 349 transitions. [2022-10-15 16:27:38,524 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 16:27:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 349 transitions. [2022-10-15 16:27:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 16:27:38,526 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:38,526 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 16:27:38,566 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 16:27:38,739 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 16:27:38,740 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 16:27:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash 794730726, now seen corresponding path program 1 times [2022-10-15 16:27:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:38,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269349921] [2022-10-15 16:27:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:38,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:38,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609491428] [2022-10-15 16:27:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:38,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:38,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:38,762 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 16:27:38,781 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 16:27:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:38,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:27:38,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:39,035 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 16:27:39,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:39,196 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 16:27:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:39,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269349921] [2022-10-15 16:27:39,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:39,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609491428] [2022-10-15 16:27:39,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609491428] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:39,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:39,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-15 16:27:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955666077] [2022-10-15 16:27:39,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 16:27:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 16:27:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:27:39,199 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 16:27:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:39,608 INFO L93 Difference]: Finished difference Result 418 states and 485 transitions. [2022-10-15 16:27:39,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 16:27:39,609 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 16:27:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:39,612 INFO L225 Difference]: With dead ends: 418 [2022-10-15 16:27:39,612 INFO L226 Difference]: Without dead ends: 418 [2022-10-15 16:27:39,612 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 16:27:39,613 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 16:27:39,614 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 16:27:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-10-15 16:27:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 388. [2022-10-15 16:27:39,622 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 16:27:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 473 transitions. [2022-10-15 16:27:39,624 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 473 transitions. Word has length 55 [2022-10-15 16:27:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:39,624 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 473 transitions. [2022-10-15 16:27:39,624 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 16:27:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 473 transitions. [2022-10-15 16:27:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 16:27:39,626 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:39,626 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1] [2022-10-15 16:27:39,661 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 16:27:39,841 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 16:27:39,842 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 16:27:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash -523171898, now seen corresponding path program 2 times [2022-10-15 16:27:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:39,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557215003] [2022-10-15 16:27:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:39,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:39,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:39,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660542410] [2022-10-15 16:27:39,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:39,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:39,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:39,865 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 16:27:39,869 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 16:27:39,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:39,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:39,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-15 16:27:39,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:40,016 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 16:27:40,523 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 16:27:40,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:41,139 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 16:27:41,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:41,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557215003] [2022-10-15 16:27:41,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:41,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660542410] [2022-10-15 16:27:41,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660542410] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:41,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:41,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2022-10-15 16:27:41,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457032134] [2022-10-15 16:27:41,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:41,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-15 16:27:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:41,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-15 16:27:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-10-15 16:27:41,146 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 16:27:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:43,546 INFO L93 Difference]: Finished difference Result 668 states and 797 transitions. [2022-10-15 16:27:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-15 16:27:43,547 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 16:27:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:43,551 INFO L225 Difference]: With dead ends: 668 [2022-10-15 16:27:43,551 INFO L226 Difference]: Without dead ends: 668 [2022-10-15 16:27:43,552 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 16:27:43,553 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, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:43,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 1012 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 16:27:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-10-15 16:27:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 612. [2022-10-15 16:27:43,566 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 16:27:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 761 transitions. [2022-10-15 16:27:43,569 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 761 transitions. Word has length 66 [2022-10-15 16:27:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:43,569 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 761 transitions. [2022-10-15 16:27:43,569 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 16:27:43,569 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 761 transitions. [2022-10-15 16:27:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-15 16:27:43,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:43,571 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 16:27:43,612 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 16:27:43,785 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 16:27:43,785 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 16:27:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 17067694, now seen corresponding path program 2 times [2022-10-15 16:27:43,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:43,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277978252] [2022-10-15 16:27:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:43,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:43,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182413045] [2022-10-15 16:27:43,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:43,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:43,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:43,812 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 16:27:43,830 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 16:27:44,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:44,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:44,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 16:27:44,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:44,515 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 16:27:44,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:44,983 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 16:27:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:44,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277978252] [2022-10-15 16:27:44,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:44,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182413045] [2022-10-15 16:27:44,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182413045] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:44,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:44,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-15 16:27:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458377668] [2022-10-15 16:27:44,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 16:27:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 16:27:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 16:27:44,987 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 16:27:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:46,457 INFO L93 Difference]: Finished difference Result 898 states and 1045 transitions. [2022-10-15 16:27:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-15 16:27:46,457 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 16:27:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:46,462 INFO L225 Difference]: With dead ends: 898 [2022-10-15 16:27:46,462 INFO L226 Difference]: Without dead ends: 898 [2022-10-15 16:27:46,463 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 16:27:46,464 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2051 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:46,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 259 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 16:27:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-10-15 16:27:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 828. [2022-10-15 16:27:46,483 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 16:27:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1017 transitions. [2022-10-15 16:27:46,486 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1017 transitions. Word has length 103 [2022-10-15 16:27:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:46,487 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1017 transitions. [2022-10-15 16:27:46,487 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 16:27:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1017 transitions. [2022-10-15 16:27:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-15 16:27:46,489 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:46,489 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 18, 4, 1, 1, 1, 1, 1] [2022-10-15 16:27:46,498 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 16:27:46,693 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 16:27:46,694 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 16:27:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1517769114, now seen corresponding path program 3 times [2022-10-15 16:27:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:46,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699323078] [2022-10-15 16:27:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:46,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:46,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:46,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721380883] [2022-10-15 16:27:46,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:27:46,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:46,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:46,725 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 16:27:46,732 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 16:27:46,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:27:46,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:46,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:27:46,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:46,976 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 16:27:47,002 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 16:27:47,013 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 16:27:47,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:47,201 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 16:27:47,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:47,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699323078] [2022-10-15 16:27:47,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:47,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721380883] [2022-10-15 16:27:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721380883] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:47,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:47,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-10-15 16:27:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052607239] [2022-10-15 16:27:47,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:47,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:27:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:27:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:27:47,204 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 16:27:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:47,263 INFO L93 Difference]: Finished difference Result 873 states and 1051 transitions. [2022-10-15 16:27:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:27:47,264 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 16:27:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:47,268 INFO L225 Difference]: With dead ends: 873 [2022-10-15 16:27:47,269 INFO L226 Difference]: Without dead ends: 873 [2022-10-15 16:27:47,269 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 16:27:47,270 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 16:27:47,270 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 16:27:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-10-15 16:27:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 858. [2022-10-15 16:27:47,295 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 16:27:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1036 transitions. [2022-10-15 16:27:47,298 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1036 transitions. Word has length 138 [2022-10-15 16:27:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:47,299 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1036 transitions. [2022-10-15 16:27:47,299 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 16:27:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1036 transitions. [2022-10-15 16:27:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-15 16:27:47,301 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:47,301 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2022-10-15 16:27:47,350 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 16:27:47,515 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 16:27:47,516 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 16:27:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash 101698678, now seen corresponding path program 3 times [2022-10-15 16:27:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:47,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062257237] [2022-10-15 16:27:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:47,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:47,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:47,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373477546] [2022-10-15 16:27:47,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:27:47,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:47,544 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 16:27:47,568 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 16:27:47,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:27:47,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:47,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:27:47,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:47,653 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 16:27:48,220 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 16:27:48,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:49,039 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 16:27:49,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062257237] [2022-10-15 16:27:49,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373477546] [2022-10-15 16:27:49,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373477546] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:49,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:49,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-15 16:27:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498967381] [2022-10-15 16:27:49,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:27:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:27:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:27:49,042 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 16:27:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:49,159 INFO L93 Difference]: Finished difference Result 856 states and 1004 transitions. [2022-10-15 16:27:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:27:49,159 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 16:27:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:49,165 INFO L225 Difference]: With dead ends: 856 [2022-10-15 16:27:49,165 INFO L226 Difference]: Without dead ends: 856 [2022-10-15 16:27:49,166 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 16:27:49,166 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 16:27:49,167 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 16:27:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-10-15 16:27:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2022-10-15 16:27:49,186 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 16:27:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1004 transitions. [2022-10-15 16:27:49,195 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1004 transitions. Word has length 138 [2022-10-15 16:27:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:49,195 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1004 transitions. [2022-10-15 16:27:49,195 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 16:27:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1004 transitions. [2022-10-15 16:27:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-10-15 16:27:49,198 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:49,198 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 16:27:49,237 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 16:27:49,412 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 16:27:49,413 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 16:27:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1917223666, now seen corresponding path program 1 times [2022-10-15 16:27:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83598263] [2022-10-15 16:27:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:49,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:49,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176299842] [2022-10-15 16:27:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:49,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:49,453 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 16:27:49,471 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 16:27:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:49,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 16:27:49,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:50,828 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 16:27:50,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:52,909 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 16:27:52,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:52,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83598263] [2022-10-15 16:27:52,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:52,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176299842] [2022-10-15 16:27:52,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176299842] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:52,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:52,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-15 16:27:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363953853] [2022-10-15 16:27:52,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:52,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-15 16:27:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:52,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-15 16:27:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2022-10-15 16:27:52,915 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 16:27:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:58,343 INFO L93 Difference]: Finished difference Result 1888 states and 2136 transitions. [2022-10-15 16:27:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-15 16:27:58,345 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 16:27:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:58,354 INFO L225 Difference]: With dead ends: 1888 [2022-10-15 16:27:58,355 INFO L226 Difference]: Without dead ends: 1888 [2022-10-15 16:27:58,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4129, Invalid=5183, Unknown=0, NotChecked=0, Total=9312 [2022-10-15 16:27:58,360 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3529 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:58,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3529 Valid, 494 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-15 16:27:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-10-15 16:27:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1768. [2022-10-15 16:27:58,400 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 16:27:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2076 transitions. [2022-10-15 16:27:58,407 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2076 transitions. Word has length 199 [2022-10-15 16:27:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:58,408 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2076 transitions. [2022-10-15 16:27:58,408 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 16:27:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2076 transitions. [2022-10-15 16:27:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-10-15 16:27:58,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:58,415 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 16:27:58,450 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 16:27:58,628 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 16:27:58,629 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 16:27:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1568772690, now seen corresponding path program 2 times [2022-10-15 16:27:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:58,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284798198] [2022-10-15 16:27:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:58,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:58,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719099087] [2022-10-15 16:27:58,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:58,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:58,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:58,685 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 16:27:58,719 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 16:27:59,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:59,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:59,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-15 16:27:59,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:02,545 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 16:28:02,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:14,780 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 16:28:14,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284798198] [2022-10-15 16:28:14,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719099087] [2022-10-15 16:28:14,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719099087] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:14,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:14,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2022-10-15 16:28:14,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172464932] [2022-10-15 16:28:14,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:14,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-10-15 16:28:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-10-15 16:28:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8259, Invalid=8511, Unknown=0, NotChecked=0, Total=16770 [2022-10-15 16:28:14,792 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)