/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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 00:30:49,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 00:30:49,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 00:30:49,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 00:30:49,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 00:30:49,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 00:30:49,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 00:30:49,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 00:30:49,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 00:30:49,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 00:30:49,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 00:30:49,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 00:30:49,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 00:30:49,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 00:30:49,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 00:30:49,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 00:30:49,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 00:30:49,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 00:30:49,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 00:30:49,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 00:30:49,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 00:30:49,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 00:30:49,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 00:30:49,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 00:30:49,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 00:30:49,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 00:30:49,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 00:30:49,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 00:30:49,249 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 [2022-10-16 00:30:49,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 00:30:49,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 00:30:49,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 00:30:49,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 00:30:49,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 00:30:49,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 00:30:49,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 00:30:49,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 00:30:49,314 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 00:30:49,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 00:30:49,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 00:30:49,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 00:30:49,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 00:30:49,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 00:30:49,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 00:30:49,317 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 00:30:49,317 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 00:30:49,317 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 00:30:49,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 00:30:49,317 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 00:30:49,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 00:30:49,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 00:30:49,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 00:30:49,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 00:30:49,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 00:30:49,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:30:49,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 00:30:49,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 00:30:49,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 00:30:49,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 00:30:49,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 00:30:49,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 00:30:49,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 00:30:49,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 00:30:49,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 00:30:49,830 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 00:30:49,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c [2022-10-16 00:30:49,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d499fc291/12d450f2775249989f470548ffdd4cc2/FLAG614ad1e17 [2022-10-16 00:30:50,587 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 00:30:50,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c [2022-10-16 00:30:50,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d499fc291/12d450f2775249989f470548ffdd4cc2/FLAG614ad1e17 [2022-10-16 00:30:50,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d499fc291/12d450f2775249989f470548ffdd4cc2 [2022-10-16 00:30:50,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 00:30:50,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 00:30:50,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 00:30:50,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 00:30:50,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 00:30:50,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:50" (1/1) ... [2022-10-16 00:30:50,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32660a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:50, skipping insertion in model container [2022-10-16 00:30:50,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:50" (1/1) ... [2022-10-16 00:30:50,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 00:30:51,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 00:30:51,258 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_1.c[331,344] [2022-10-16 00:30:51,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:30:51,301 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 00:30:51,318 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_1.c[331,344] [2022-10-16 00:30:51,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:30:51,348 INFO L208 MainTranslator]: Completed translation [2022-10-16 00:30:51,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51 WrapperNode [2022-10-16 00:30:51,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 00:30:51,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 00:30:51,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 00:30:51,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 00:30:51,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,403 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-10-16 00:30:51,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 00:30:51,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 00:30:51,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 00:30:51,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 00:30:51,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 00:30:51,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 00:30:51,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 00:30:51,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 00:30:51,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (1/1) ... [2022-10-16 00:30:51,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:30:51,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:51,527 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) [2022-10-16 00:30:51,537 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 [2022-10-16 00:30:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 00:30:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 00:30:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 00:30:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 00:30:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 00:30:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 00:30:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 00:30:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 00:30:51,723 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 00:30:51,727 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 00:30:52,159 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 00:30:52,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 00:30:52,176 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 00:30:52,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:52 BoogieIcfgContainer [2022-10-16 00:30:52,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 00:30:52,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 00:30:52,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 00:30:52,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 00:30:52,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:50" (1/3) ... [2022-10-16 00:30:52,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fa1dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:52, skipping insertion in model container [2022-10-16 00:30:52,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:51" (2/3) ... [2022-10-16 00:30:52,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fa1dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:52, skipping insertion in model container [2022-10-16 00:30:52,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:52" (3/3) ... [2022-10-16 00:30:52,197 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_1.c [2022-10-16 00:30:52,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 00:30:52,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-16 00:30:52,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 00:30:52,308 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;@4918ba79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 00:30:52,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-16 00:30:52,314 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) [2022-10-16 00:30:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:30:52,324 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:52,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:30:52,327 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)] === [2022-10-16 00:30:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-10-16 00:30:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:52,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499434133] [2022-10-16 00:30:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:52,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:52,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:52,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827681600] [2022-10-16 00:30:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:52,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:52,507 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) [2022-10-16 00:30:52,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 00:30:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:52,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-16 00:30:52,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:52,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:30:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499434133] [2022-10-16 00:30:52,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827681600] [2022-10-16 00:30:52,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827681600] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:52,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:52,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:30:52,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781607822] [2022-10-16 00:30:52,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:52,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 00:30:52,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 00:30:52,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 00:30:52,674 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) [2022-10-16 00:30:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:52,692 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-10-16 00:30:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 00:30:52,695 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 [2022-10-16 00:30:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:52,705 INFO L225 Difference]: With dead ends: 34 [2022-10-16 00:30:52,705 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 00:30:52,707 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 [2022-10-16 00:30:52,713 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 [2022-10-16 00:30:52,715 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] [2022-10-16 00:30:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 00:30:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 00:30:52,753 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) [2022-10-16 00:30:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-10-16 00:30:52,756 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2022-10-16 00:30:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:52,756 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-10-16 00:30:52,757 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) [2022-10-16 00:30:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-10-16 00:30:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:30:52,758 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:52,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:30:52,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:52,973 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 [2022-10-16 00:30:52,974 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)] === [2022-10-16 00:30:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2022-10-16 00:30:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:52,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108900895] [2022-10-16 00:30:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:53,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738063272] [2022-10-16 00:30:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:53,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:53,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:53,012 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) [2022-10-16 00:30:53,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 00:30:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:53,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 00:30:53,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:53,156 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 [2022-10-16 00:30:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:53,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:30:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:53,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108900895] [2022-10-16 00:30:53,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:53,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738063272] [2022-10-16 00:30:53,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738063272] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:53,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:53,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:30:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110243226] [2022-10-16 00:30:53,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:53,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 00:30:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 00:30:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 00:30:53,183 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) [2022-10-16 00:30:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:53,218 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-16 00:30:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 00:30:53,219 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 [2022-10-16 00:30:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:53,220 INFO L225 Difference]: With dead ends: 28 [2022-10-16 00:30:53,220 INFO L226 Difference]: Without dead ends: 28 [2022-10-16 00:30:53,221 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 [2022-10-16 00:30:53,223 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 [2022-10-16 00:30:53,224 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] [2022-10-16 00:30:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-16 00:30:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-16 00:30:53,229 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) [2022-10-16 00:30:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-16 00:30:53,230 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2022-10-16 00:30:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:53,231 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-16 00:30:53,231 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) [2022-10-16 00:30:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-16 00:30:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:30:53,232 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:53,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:30:53,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:53,446 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 [2022-10-16 00:30:53,447 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)] === [2022-10-16 00:30:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-10-16 00:30:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:53,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963486135] [2022-10-16 00:30:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:53,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:53,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225533191] [2022-10-16 00:30:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:53,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:53,475 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) [2022-10-16 00:30:53,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 00:30:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:53,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 00:30:53,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:53,596 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 [2022-10-16 00:30:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:53,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:30:53,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963486135] [2022-10-16 00:30:53,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225533191] [2022-10-16 00:30:53,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225533191] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:53,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:53,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 00:30:53,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840266341] [2022-10-16 00:30:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:53,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:30:53,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:30:53,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:30:53,652 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) [2022-10-16 00:30:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:53,796 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-10-16 00:30:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:30:53,797 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 [2022-10-16 00:30:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:53,798 INFO L225 Difference]: With dead ends: 44 [2022-10-16 00:30:53,801 INFO L226 Difference]: Without dead ends: 44 [2022-10-16 00:30:53,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:30:53,804 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:53,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 28 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-16 00:30:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2022-10-16 00:30:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 34 states have internal predecessors, (40), 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) [2022-10-16 00:30:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-10-16 00:30:53,822 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 6 [2022-10-16 00:30:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:53,824 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-10-16 00:30:53,824 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) [2022-10-16 00:30:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-10-16 00:30:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 00:30:53,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:53,826 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:53,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-16 00:30:54,026 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 [2022-10-16 00:30:54,028 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)] === [2022-10-16 00:30:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash -866549681, now seen corresponding path program 1 times [2022-10-16 00:30:54,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079299240] [2022-10-16 00:30:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:54,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:54,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727871587] [2022-10-16 00:30:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:54,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:54,056 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) [2022-10-16 00:30:54,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 00:30:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:54,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:30:54,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:54,138 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 [2022-10-16 00:30:54,182 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 [2022-10-16 00:30:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:54,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:30:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:54,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079299240] [2022-10-16 00:30:54,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:54,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727871587] [2022-10-16 00:30:54,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727871587] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:54,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:54,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:30:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586963025] [2022-10-16 00:30:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:30:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:30:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:30:54,198 INFO L87 Difference]: Start difference. First operand 35 states and 40 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) [2022-10-16 00:30:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:54,298 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2022-10-16 00:30:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:30:54,300 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 [2022-10-16 00:30:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:54,302 INFO L225 Difference]: With dead ends: 47 [2022-10-16 00:30:54,302 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 00:30:54,306 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 [2022-10-16 00:30:54,308 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:54,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 72 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 00:30:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2022-10-16 00:30:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 36 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) [2022-10-16 00:30:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-10-16 00:30:54,333 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 12 [2022-10-16 00:30:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:54,334 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-10-16 00:30:54,334 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) [2022-10-16 00:30:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-10-16 00:30:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 00:30:54,340 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:54,340 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:54,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:54,556 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 [2022-10-16 00:30:54,557 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)] === [2022-10-16 00:30:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -866490099, now seen corresponding path program 1 times [2022-10-16 00:30:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:54,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935370813] [2022-10-16 00:30:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:54,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:54,578 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:54,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180881686] [2022-10-16 00:30:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:54,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:54,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:54,581 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) [2022-10-16 00:30:54,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 00:30:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:54,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:30:54,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:54,665 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 [2022-10-16 00:30:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:54,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:54,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935370813] [2022-10-16 00:30:54,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:54,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180881686] [2022-10-16 00:30:54,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180881686] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:54,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:54,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-10-16 00:30:54,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488634178] [2022-10-16 00:30:54,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:54,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:30:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:30:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:30:54,948 INFO L87 Difference]: Start difference. First operand 37 states and 42 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) [2022-10-16 00:30:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:55,294 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2022-10-16 00:30:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:30:55,295 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 [2022-10-16 00:30:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:55,300 INFO L225 Difference]: With dead ends: 84 [2022-10-16 00:30:55,301 INFO L226 Difference]: Without dead ends: 84 [2022-10-16 00:30:55,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-10-16 00:30:55,309 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 275 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:55,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 64 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:30:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-16 00:30:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2022-10-16 00:30:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 73 states have internal predecessors, (94), 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) [2022-10-16 00:30:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-10-16 00:30:55,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 12 [2022-10-16 00:30:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:55,334 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-10-16 00:30:55,336 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) [2022-10-16 00:30:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-10-16 00:30:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 00:30:55,339 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:55,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:55,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:55,555 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 [2022-10-16 00:30:55,556 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)] === [2022-10-16 00:30:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1405816076, now seen corresponding path program 1 times [2022-10-16 00:30:55,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96875854] [2022-10-16 00:30:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:55,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:55,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905478439] [2022-10-16 00:30:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:55,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:55,614 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) [2022-10-16 00:30:55,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 00:30:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:55,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 00:30:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:55,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:55,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:55,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96875854] [2022-10-16 00:30:55,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:55,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905478439] [2022-10-16 00:30:55,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905478439] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:55,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:55,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 00:30:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755583780] [2022-10-16 00:30:55,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:55,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:30:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:30:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:30:55,881 INFO L87 Difference]: Start difference. First operand 74 states and 94 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) [2022-10-16 00:30:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:56,059 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2022-10-16 00:30:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 00:30:56,060 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 [2022-10-16 00:30:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:56,061 INFO L225 Difference]: With dead ends: 112 [2022-10-16 00:30:56,062 INFO L226 Difference]: Without dead ends: 112 [2022-10-16 00:30:56,062 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 [2022-10-16 00:30:56,063 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 357 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:56,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 72 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-16 00:30:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2022-10-16 00:30:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.3125) internal successors, (126), 99 states have internal predecessors, (126), 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) [2022-10-16 00:30:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2022-10-16 00:30:56,074 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 24 [2022-10-16 00:30:56,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:56,075 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2022-10-16 00:30:56,075 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) [2022-10-16 00:30:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2022-10-16 00:30:56,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 00:30:56,077 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:56,077 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:56,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:56,290 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 [2022-10-16 00:30:56,291 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)] === [2022-10-16 00:30:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash 952498338, now seen corresponding path program 1 times [2022-10-16 00:30:56,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:56,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843598949] [2022-10-16 00:30:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:56,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:56,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:56,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284209487] [2022-10-16 00:30:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:56,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:56,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:56,321 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) [2022-10-16 00:30:56,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 00:30:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:56,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 00:30:56,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:56,424 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 [2022-10-16 00:30:56,457 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 [2022-10-16 00:30:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:30:56,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:30:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843598949] [2022-10-16 00:30:56,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:56,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284209487] [2022-10-16 00:30:56,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284209487] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:56,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-10-16 00:30:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357903961] [2022-10-16 00:30:56,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:30:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:30:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:30:56,526 INFO L87 Difference]: Start difference. First operand 100 states and 126 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) [2022-10-16 00:30:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:56,760 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2022-10-16 00:30:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:30:56,761 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 [2022-10-16 00:30:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:56,762 INFO L225 Difference]: With dead ends: 118 [2022-10-16 00:30:56,763 INFO L226 Difference]: Without dead ends: 118 [2022-10-16 00:30:56,763 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 [2022-10-16 00:30:56,764 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 94 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:56,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 171 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:56,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-10-16 00:30:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-10-16 00:30:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 105 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) [2022-10-16 00:30:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2022-10-16 00:30:56,775 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 30 [2022-10-16 00:30:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:56,775 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-10-16 00:30:56,775 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) [2022-10-16 00:30:56,776 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2022-10-16 00:30:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 00:30:56,777 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:56,777 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 00:30:56,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:56,983 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 [2022-10-16 00:30:56,984 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)] === [2022-10-16 00:30:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash -461537444, now seen corresponding path program 2 times [2022-10-16 00:30:56,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:56,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661270034] [2022-10-16 00:30:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:57,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:57,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080548724] [2022-10-16 00:30:57,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:30:57,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:57,009 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) [2022-10-16 00:30:57,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 00:30:57,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:30:57,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:30:57,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:30:57,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-16 00:30:59,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:30:59,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661270034] [2022-10-16 00:30:59,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080548724] [2022-10-16 00:30:59,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080548724] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:59,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:59,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 00:30:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337699323] [2022-10-16 00:30:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:59,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 00:30:59,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 00:30:59,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:30:59,747 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-10-16 00:30:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:59,749 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2022-10-16 00:30:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:30:59,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 [2022-10-16 00:30:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:59,753 INFO L225 Difference]: With dead ends: 104 [2022-10-16 00:30:59,753 INFO L226 Difference]: Without dead ends: 104 [2022-10-16 00:30:59,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 00:30:59,755 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:59,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-10-16 00:30:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-10-16 00:30:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-10-16 00:30:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.29) internal successors, (129), 103 states have internal predecessors, (129), 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) [2022-10-16 00:30:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2022-10-16 00:30:59,765 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 30 [2022-10-16 00:30:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:59,765 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2022-10-16 00:30:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-10-16 00:30:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2022-10-16 00:30:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 00:30:59,767 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:59,767 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:59,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:59,980 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 [2022-10-16 00:30:59,981 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:30:59,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1838251245, now seen corresponding path program 1 times [2022-10-16 00:30:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:59,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082527864] [2022-10-16 00:30:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:00,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577854949] [2022-10-16 00:31:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:00,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:00,003 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:31:00,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 00:31:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:00,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 00:31:00,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:00,119 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 [2022-10-16 00:31:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:00,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:00,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:00,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082527864] [2022-10-16 00:31:00,957 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:00,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577854949] [2022-10-16 00:31:00,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577854949] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:00,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:00,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-10-16 00:31:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571456746] [2022-10-16 00:31:00,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:00,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 00:31:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 00:31:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-16 00:31:00,960 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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) [2022-10-16 00:31:02,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:02,052 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2022-10-16 00:31:02,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:31:02,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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 31 [2022-10-16 00:31:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:02,054 INFO L225 Difference]: With dead ends: 188 [2022-10-16 00:31:02,055 INFO L226 Difference]: Without dead ends: 188 [2022-10-16 00:31:02,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2022-10-16 00:31:02,056 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 835 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:02,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 302 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 00:31:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-16 00:31:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 162. [2022-10-16 00:31:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.3227848101265822) internal successors, (209), 161 states have internal predecessors, (209), 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) [2022-10-16 00:31:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 209 transitions. [2022-10-16 00:31:02,069 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 209 transitions. Word has length 31 [2022-10-16 00:31:02,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:02,069 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 209 transitions. [2022-10-16 00:31:02,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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) [2022-10-16 00:31:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 209 transitions. [2022-10-16 00:31:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 00:31:02,071 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:02,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:02,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:02,286 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 [2022-10-16 00:31:02,287 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)] === [2022-10-16 00:31:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1211295717, now seen corresponding path program 1 times [2022-10-16 00:31:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:02,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820164020] [2022-10-16 00:31:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:02,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:02,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:02,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445472454] [2022-10-16 00:31:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:02,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:02,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:02,325 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) [2022-10-16 00:31:02,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 00:31:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:02,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 00:31:02,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:02,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:03,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820164020] [2022-10-16 00:31:03,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:03,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445472454] [2022-10-16 00:31:03,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445472454] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:03,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-16 00:31:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411947140] [2022-10-16 00:31:03,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 00:31:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 00:31:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:31:03,020 INFO L87 Difference]: Start difference. First operand 162 states and 209 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 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) [2022-10-16 00:31:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:03,688 INFO L93 Difference]: Finished difference Result 248 states and 290 transitions. [2022-10-16 00:31:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 00:31:03,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 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 49 [2022-10-16 00:31:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:03,691 INFO L225 Difference]: With dead ends: 248 [2022-10-16 00:31:03,692 INFO L226 Difference]: Without dead ends: 248 [2022-10-16 00:31:03,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=335, Unknown=0, NotChecked=0, Total=600 [2022-10-16 00:31:03,693 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 954 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:03,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 158 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 00:31:03,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-10-16 00:31:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 216. [2022-10-16 00:31:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.3066037735849056) internal successors, (277), 215 states have internal predecessors, (277), 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) [2022-10-16 00:31:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 277 transitions. [2022-10-16 00:31:03,705 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 277 transitions. Word has length 49 [2022-10-16 00:31:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:03,705 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 277 transitions. [2022-10-16 00:31:03,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 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) [2022-10-16 00:31:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 277 transitions. [2022-10-16 00:31:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-16 00:31:03,708 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:03,708 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:03,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:03,923 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 [2022-10-16 00:31:03,924 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)] === [2022-10-16 00:31:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1703325481, now seen corresponding path program 2 times [2022-10-16 00:31:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:03,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118155387] [2022-10-16 00:31:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:03,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:03,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735039552] [2022-10-16 00:31:03,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:03,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:03,949 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) [2022-10-16 00:31:03,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 00:31:04,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:31:04,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:04,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 00:31:04,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:04,121 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 [2022-10-16 00:31:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:04,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:05,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:05,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118155387] [2022-10-16 00:31:05,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:05,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735039552] [2022-10-16 00:31:05,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735039552] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:05,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:05,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2022-10-16 00:31:05,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120026710] [2022-10-16 00:31:05,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 00:31:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 00:31:05,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-10-16 00:31:05,998 INFO L87 Difference]: Start difference. First operand 216 states and 277 transitions. Second operand has 28 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 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) [2022-10-16 00:31:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:09,827 INFO L93 Difference]: Finished difference Result 388 states and 470 transitions. [2022-10-16 00:31:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 00:31:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 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 67 [2022-10-16 00:31:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:09,834 INFO L225 Difference]: With dead ends: 388 [2022-10-16 00:31:09,834 INFO L226 Difference]: Without dead ends: 388 [2022-10-16 00:31:09,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=732, Invalid=1818, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 00:31:09,837 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2613 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:09,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 1333 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-16 00:31:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-10-16 00:31:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 330. [2022-10-16 00:31:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 326 states have (on average 1.3282208588957056) internal successors, (433), 329 states have internal predecessors, (433), 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) [2022-10-16 00:31:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 433 transitions. [2022-10-16 00:31:09,854 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 433 transitions. Word has length 67 [2022-10-16 00:31:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:09,855 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 433 transitions. [2022-10-16 00:31:09,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 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) [2022-10-16 00:31:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 433 transitions. [2022-10-16 00:31:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-16 00:31:09,868 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:09,868 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:09,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:10,068 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 [2022-10-16 00:31:10,070 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)] === [2022-10-16 00:31:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash 620983635, now seen corresponding path program 2 times [2022-10-16 00:31:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:10,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115964886] [2022-10-16 00:31:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:10,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:10,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215471152] [2022-10-16 00:31:10,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:10,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:10,126 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) [2022-10-16 00:31:10,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 00:31:10,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 00:31:10,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:10,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 00:31:10,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-10-16 00:31:11,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:31:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115964886] [2022-10-16 00:31:11,839 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215471152] [2022-10-16 00:31:11,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215471152] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:31:11,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:31:11,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 00:31:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729427197] [2022-10-16 00:31:11,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:31:11,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 00:31:11,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 00:31:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:31:11,842 INFO L87 Difference]: Start difference. First operand 330 states and 433 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-10-16 00:31:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:12,158 INFO L93 Difference]: Finished difference Result 657 states and 816 transitions. [2022-10-16 00:31:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:31:12,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 97 [2022-10-16 00:31:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:12,166 INFO L225 Difference]: With dead ends: 657 [2022-10-16 00:31:12,166 INFO L226 Difference]: Without dead ends: 657 [2022-10-16 00:31:12,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-16 00:31:12,168 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:12,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 104 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:31:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-10-16 00:31:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 629. [2022-10-16 00:31:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 625 states have (on average 1.2672) internal successors, (792), 628 states have internal predecessors, (792), 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) [2022-10-16 00:31:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 792 transitions. [2022-10-16 00:31:12,185 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 792 transitions. Word has length 97 [2022-10-16 00:31:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:12,187 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 792 transitions. [2022-10-16 00:31:12,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-10-16 00:31:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 792 transitions. [2022-10-16 00:31:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-16 00:31:12,191 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:12,192 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 11, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:12,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:12,405 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 [2022-10-16 00:31:12,406 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1249760195, now seen corresponding path program 1 times [2022-10-16 00:31:12,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:12,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891726016] [2022-10-16 00:31:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:12,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:12,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367245807] [2022-10-16 00:31:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:12,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:12,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:12,433 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) [2022-10-16 00:31:12,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 00:31:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:12,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 00:31:12,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:13,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891726016] [2022-10-16 00:31:14,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367245807] [2022-10-16 00:31:14,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367245807] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:14,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:14,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-16 00:31:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008626371] [2022-10-16 00:31:14,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:14,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 00:31:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:14,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 00:31:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 00:31:14,073 INFO L87 Difference]: Start difference. First operand 629 states and 792 transitions. Second operand has 34 states, 34 states have (on average 5.588235294117647) internal successors, (190), 33 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) [2022-10-16 00:31:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:16,029 INFO L93 Difference]: Finished difference Result 919 states and 1084 transitions. [2022-10-16 00:31:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-16 00:31:16,030 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.588235294117647) internal successors, (190), 33 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) Word has length 104 [2022-10-16 00:31:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:16,036 INFO L225 Difference]: With dead ends: 919 [2022-10-16 00:31:16,037 INFO L226 Difference]: Without dead ends: 919 [2022-10-16 00:31:16,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 00:31:16,040 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2181 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:16,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 321 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 00:31:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-10-16 00:31:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 849. [2022-10-16 00:31:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 845 states have (on average 1.2497041420118342) internal successors, (1056), 848 states have internal predecessors, (1056), 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) [2022-10-16 00:31:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1056 transitions. [2022-10-16 00:31:16,068 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1056 transitions. Word has length 104 [2022-10-16 00:31:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:16,068 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1056 transitions. [2022-10-16 00:31:16,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.588235294117647) internal successors, (190), 33 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) [2022-10-16 00:31:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1056 transitions. [2022-10-16 00:31:16,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-16 00:31:16,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:16,071 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 21, 19, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:16,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:16,286 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 [2022-10-16 00:31:16,287 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)] === [2022-10-16 00:31:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1221128619, now seen corresponding path program 3 times [2022-10-16 00:31:16,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882325373] [2022-10-16 00:31:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:16,315 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:16,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552602487] [2022-10-16 00:31:16,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:31:16,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:16,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:16,317 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) [2022-10-16 00:31:16,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 00:31:16,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:31:16,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:16,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:31:16,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:16,746 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 [2022-10-16 00:31:16,793 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 [2022-10-16 00:31:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 107 proven. 21 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-16 00:31:16,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 65 proven. 63 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-16 00:31:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882325373] [2022-10-16 00:31:17,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552602487] [2022-10-16 00:31:17,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552602487] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:17,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:17,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-10-16 00:31:17,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918240431] [2022-10-16 00:31:17,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 00:31:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 00:31:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:31:17,204 INFO L87 Difference]: Start difference. First operand 849 states and 1056 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2022-10-16 00:31:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:17,334 INFO L93 Difference]: Finished difference Result 930 states and 1137 transitions. [2022-10-16 00:31:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:31:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 139 [2022-10-16 00:31:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:17,340 INFO L225 Difference]: With dead ends: 930 [2022-10-16 00:31:17,341 INFO L226 Difference]: Without dead ends: 930 [2022-10-16 00:31:17,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 00:31:17,342 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:17,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 69 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:31:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-10-16 00:31:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 901. [2022-10-16 00:31:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 897 states have (on average 1.2352285395763656) internal successors, (1108), 900 states have internal predecessors, (1108), 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) [2022-10-16 00:31:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2022-10-16 00:31:17,367 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 139 [2022-10-16 00:31:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:17,368 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2022-10-16 00:31:17,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2022-10-16 00:31:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2022-10-16 00:31:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-16 00:31:17,370 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:17,370 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:17,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:17,584 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 [2022-10-16 00:31:17,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash -194941817, now seen corresponding path program 4 times [2022-10-16 00:31:17,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:17,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851863318] [2022-10-16 00:31:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:17,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:17,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029747119] [2022-10-16 00:31:17,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 00:31:17,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:17,622 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) [2022-10-16 00:31:17,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 00:31:18,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 00:31:18,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:18,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 00:31:18,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:18,088 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 [2022-10-16 00:31:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:20,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:23,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:23,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851863318] [2022-10-16 00:31:23,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:23,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029747119] [2022-10-16 00:31:23,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029747119] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:23,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:23,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2022-10-16 00:31:23,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512436708] [2022-10-16 00:31:23,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:23,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 00:31:23,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:23,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 00:31:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=2152, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 00:31:23,974 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand has 54 states, 53 states have (on average 5.245283018867925) internal successors, (278), 53 states have internal predecessors, (278), 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) [2022-10-16 00:31:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:38,328 INFO L93 Difference]: Finished difference Result 1505 states and 1800 transitions. [2022-10-16 00:31:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 00:31:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.245283018867925) internal successors, (278), 53 states have internal predecessors, (278), 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 139 [2022-10-16 00:31:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:38,340 INFO L225 Difference]: With dead ends: 1505 [2022-10-16 00:31:38,341 INFO L226 Difference]: Without dead ends: 1505 [2022-10-16 00:31:38,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2683, Invalid=7619, Unknown=0, NotChecked=0, Total=10302 [2022-10-16 00:31:38,349 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 10348 mSDsluCounter, 5264 mSDsCounter, 0 mSdLazyCounter, 5200 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10348 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 6258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 5200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:38,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10348 Valid, 5496 Invalid, 6258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 5200 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-10-16 00:31:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-10-16 00:31:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1385. [2022-10-16 00:31:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1381 states have (on average 1.2483707458363504) internal successors, (1724), 1384 states have internal predecessors, (1724), 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) [2022-10-16 00:31:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1724 transitions. [2022-10-16 00:31:38,388 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1724 transitions. Word has length 139 [2022-10-16 00:31:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:38,388 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1724 transitions. [2022-10-16 00:31:38,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.245283018867925) internal successors, (278), 53 states have internal predecessors, (278), 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) [2022-10-16 00:31:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1724 transitions. [2022-10-16 00:31:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-10-16 00:31:38,392 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:38,392 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:38,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:38,607 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 [2022-10-16 00:31:38,608 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)] === [2022-10-16 00:31:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1937656961, now seen corresponding path program 2 times [2022-10-16 00:31:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:38,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553545468] [2022-10-16 00:31:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:38,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:38,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543929783] [2022-10-16 00:31:38,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:38,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:38,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:38,658 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) [2022-10-16 00:31:38,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 00:31:38,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:31:38,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:38,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 00:31:38,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:40,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:44,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:44,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553545468] [2022-10-16 00:31:44,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:44,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543929783] [2022-10-16 00:31:44,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543929783] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:44,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:44,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-16 00:31:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130482059] [2022-10-16 00:31:44,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:44,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-16 00:31:44,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-16 00:31:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 00:31:44,031 INFO L87 Difference]: Start difference. First operand 1385 states and 1724 transitions. Second operand has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 65 states have internal predecessors, (382), 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) [2022-10-16 00:31:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:52,115 INFO L93 Difference]: Finished difference Result 2011 states and 2352 transitions. [2022-10-16 00:31:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-16 00:31:52,116 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 65 states have internal predecessors, (382), 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 200 [2022-10-16 00:31:52,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:52,126 INFO L225 Difference]: With dead ends: 2011 [2022-10-16 00:31:52,127 INFO L226 Difference]: Without dead ends: 2011 [2022-10-16 00:31:52,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=4129, Invalid=5183, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 00:31:52,131 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3317 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:52,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 647 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-16 00:31:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-10-16 00:31:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1861. [2022-10-16 00:31:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1857 states have (on average 1.234248788368336) internal successors, (2292), 1860 states have internal predecessors, (2292), 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) [2022-10-16 00:31:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2292 transitions. [2022-10-16 00:31:52,183 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2292 transitions. Word has length 200 [2022-10-16 00:31:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:52,183 INFO L495 AbstractCegarLoop]: Abstraction has 1861 states and 2292 transitions. [2022-10-16 00:31:52,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 65 states have internal predecessors, (382), 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) [2022-10-16 00:31:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2292 transitions. [2022-10-16 00:31:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-10-16 00:31:52,189 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:52,189 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:52,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 00:31:52,405 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1891276289, now seen corresponding path program 5 times [2022-10-16 00:31:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118620116] [2022-10-16 00:31:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:52,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:52,475 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:52,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690803445] [2022-10-16 00:31:52,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 00:31:52,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:52,477 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:31:52,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 00:32:17,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-16 00:32:17,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:32:17,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 99 conjunts are in the unsatisfiable core [2022-10-16 00:32:17,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:17,403 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 [2022-10-16 00:32:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:25,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:38,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118620116] [2022-10-16 00:32:38,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:32:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690803445] [2022-10-16 00:32:38,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690803445] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:38,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:32:38,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2022-10-16 00:32:38,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707053319] [2022-10-16 00:32:38,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:38,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-10-16 00:32:38,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-10-16 00:32:38,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=7744, Unknown=0, NotChecked=0, Total=10302 [2022-10-16 00:32:38,679 INFO L87 Difference]: Start difference. First operand 1861 states and 2292 transitions. Second operand has 102 states, 101 states have (on average 5.603960396039604) internal successors, (566), 101 states have internal predecessors, (566), 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) [2022-10-16 00:34:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:34:03,824 INFO L93 Difference]: Finished difference Result 3073 states and 3672 transitions. [2022-10-16 00:34:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-10-16 00:34:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 5.603960396039604) internal successors, (566), 101 states have internal predecessors, (566), 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 283 [2022-10-16 00:34:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:34:03,841 INFO L225 Difference]: With dead ends: 3073 [2022-10-16 00:34:03,841 INFO L226 Difference]: Without dead ends: 3073 [2022-10-16 00:34:03,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7103 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=9955, Invalid=29051, Unknown=0, NotChecked=0, Total=39006 [2022-10-16 00:34:03,851 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 33384 mSDsluCounter, 22057 mSDsCounter, 0 mSdLazyCounter, 20794 mSolverCounterSat, 3026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33384 SdHoareTripleChecker+Valid, 22529 SdHoareTripleChecker+Invalid, 23820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3026 IncrementalHoareTripleChecker+Valid, 20794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2022-10-16 00:34:03,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33384 Valid, 22529 Invalid, 23820 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3026 Valid, 20794 Invalid, 0 Unknown, 0 Unchecked, 32.8s Time] [2022-10-16 00:34:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2022-10-16 00:34:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2825. [2022-10-16 00:34:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2821 states have (on average 1.2463665366891172) internal successors, (3516), 2824 states have internal predecessors, (3516), 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) [2022-10-16 00:34:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 3516 transitions. [2022-10-16 00:34:03,917 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 3516 transitions. Word has length 283 [2022-10-16 00:34:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:34:03,918 INFO L495 AbstractCegarLoop]: Abstraction has 2825 states and 3516 transitions. [2022-10-16 00:34:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 5.603960396039604) internal successors, (566), 101 states have internal predecessors, (566), 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) [2022-10-16 00:34:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 3516 transitions. [2022-10-16 00:34:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-10-16 00:34:03,926 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:34:03,927 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:34:03,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 00:34:04,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 00:34:04,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:34:04,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:34:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash -746753055, now seen corresponding path program 3 times [2022-10-16 00:34:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:34:04,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125943747] [2022-10-16 00:34:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:34:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:34:04,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:34:04,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175899075] [2022-10-16 00:34:04,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:34:04,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:34:04,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:34:04,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:34:04,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 00:34:04,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:34:04,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:34:04,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 00:34:04,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:34:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11408 trivial. 0 not checked. [2022-10-16 00:34:07,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:34:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11408 trivial. 0 not checked. [2022-10-16 00:34:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:34:15,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125943747] [2022-10-16 00:34:15,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:34:15,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175899075] [2022-10-16 00:34:15,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175899075] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:34:15,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:34:15,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-10-16 00:34:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856539569] [2022-10-16 00:34:15,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:34:15,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 00:34:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:34:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 00:34:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:34:15,224 INFO L87 Difference]: Start difference. First operand 2825 states and 3516 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 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) [2022-10-16 00:34:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:34:15,979 INFO L93 Difference]: Finished difference Result 5560 states and 6729 transitions. [2022-10-16 00:34:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:34:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 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 392 [2022-10-16 00:34:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:34:16,007 INFO L225 Difference]: With dead ends: 5560 [2022-10-16 00:34:16,007 INFO L226 Difference]: Without dead ends: 5560 [2022-10-16 00:34:16,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 769 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-10-16 00:34:16,008 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 291 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 00:34:16,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 240 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 00:34:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2022-10-16 00:34:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5355. [2022-10-16 00:34:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 5351 states have (on average 1.2214539338441412) internal successors, (6536), 5354 states have internal predecessors, (6536), 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) [2022-10-16 00:34:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 6536 transitions. [2022-10-16 00:34:16,124 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 6536 transitions. Word has length 392 [2022-10-16 00:34:16,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:34:16,125 INFO L495 AbstractCegarLoop]: Abstraction has 5355 states and 6536 transitions. [2022-10-16 00:34:16,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 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) [2022-10-16 00:34:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 6536 transitions. [2022-10-16 00:34:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-10-16 00:34:16,135 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:34:16,135 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:34:16,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 00:34:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 00:34:16,350 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:34:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:34:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1916955745, now seen corresponding path program 4 times [2022-10-16 00:34:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:34:16,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097865096] [2022-10-16 00:34:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:34:16,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:34:16,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:34:16,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155651203] [2022-10-16 00:34:16,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 00:34:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:34:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:34:16,413 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:34:16,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 00:34:16,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 00:34:16,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:34:16,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 207 conjunts are in the unsatisfiable core [2022-10-16 00:34:16,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:34:17,000 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 [2022-10-16 00:34:17,123 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,199 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,298 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,402 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,512 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,597 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,684 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,770 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,861 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:17,954 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:17,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,050 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,144 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,237 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,343 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,458 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,580 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,759 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,871 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:18,982 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:18,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,089 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,203 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,316 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,430 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,552 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,679 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,814 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:19,947 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:19,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,096 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,243 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,378 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,511 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,640 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,776 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:20,917 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:20,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:21,097 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:21,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:21,267 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:21,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:21,440 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:21,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:21,608 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:21,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:21,779 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:21,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:21,950 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:21,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:22,126 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:22,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:22,308 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:22,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:22,494 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:22,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:22,694 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:22,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:22,896 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:22,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:23,094 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:23,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:23,303 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:23,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:23,514 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:23,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:23,757 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:23,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:23,984 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:23,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:24,187 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:24,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:24,410 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:24,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:24,628 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:24,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:24,842 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 00:34:24,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 00:34:25,800 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-10-16 00:34:25,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2022-10-16 00:34:27,096 INFO L356 Elim1Store]: treesize reduction 110, result has 22.5 percent of original size [2022-10-16 00:34:27,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2022-10-16 00:34:28,765 INFO L356 Elim1Store]: treesize reduction 172, result has 20.0 percent of original size [2022-10-16 00:34:28,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2022-10-16 00:34:29,697 INFO L356 Elim1Store]: treesize reduction 172, result has 20.0 percent of original size [2022-10-16 00:34:29,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2022-10-16 00:34:30,716 INFO L356 Elim1Store]: treesize reduction 172, result has 20.0 percent of original size [2022-10-16 00:34:30,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2022-10-16 00:34:33,006 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-10-16 00:34:33,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 20 [2022-10-16 00:34:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11503 backedges. 10077 proven. 1399 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 00:34:33,126 INFO L328 TraceCheckSpWp]: Computing backward predicates...