/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 21:07:11,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 21:07:11,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 21:07:11,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 21:07:11,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 21:07:11,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 21:07:11,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 21:07:11,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 21:07:11,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 21:07:11,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 21:07:11,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 21:07:11,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 21:07:11,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 21:07:11,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 21:07:11,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 21:07:11,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 21:07:11,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 21:07:11,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 21:07:11,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 21:07:11,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 21:07:11,993 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 21:07:11,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 21:07:11,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 21:07:11,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 21:07:11,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 21:07:12,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 21:07:12,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 21:07:12,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 21:07:12,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 21:07:12,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 21:07:12,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 21:07:12,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 21:07:12,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 21:07:12,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 21:07:12,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 21:07:12,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 21:07:12,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 21:07:12,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 21:07:12,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 21:07:12,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 21:07:12,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 21:07:12,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 21:07:12,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-06 21:07:12,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 21:07:12,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 21:07:12,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 21:07:12,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 21:07:12,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 21:07:12,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 21:07:12,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 21:07:12,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 21:07:12,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 21:07:12,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 21:07:12,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 21:07:12,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 21:07:12,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 21:07:12,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-06 21:07:12,018 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 21:07:12,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 21:07:12,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 21:07:12,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 21:07:12,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 21:07:12,206 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 21:07:12,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i [2022-04-06 21:07:12,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053db86ef/52fdb574111140d9a6645e1cc362111d/FLAGdd6b26192 [2022-04-06 21:07:12,608 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 21:07:12,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i [2022-04-06 21:07:12,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053db86ef/52fdb574111140d9a6645e1cc362111d/FLAGdd6b26192 [2022-04-06 21:07:13,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053db86ef/52fdb574111140d9a6645e1cc362111d [2022-04-06 21:07:13,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 21:07:13,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 21:07:13,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 21:07:13,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 21:07:13,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 21:07:13,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d5cfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13, skipping insertion in model container [2022-04-06 21:07:13,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 21:07:13,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 21:07:13,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i[873,886] [2022-04-06 21:07:13,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 21:07:13,209 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 21:07:13,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i[873,886] [2022-04-06 21:07:13,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 21:07:13,231 INFO L208 MainTranslator]: Completed translation [2022-04-06 21:07:13,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13 WrapperNode [2022-04-06 21:07:13,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 21:07:13,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 21:07:13,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 21:07:13,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 21:07:13,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 21:07:13,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 21:07:13,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 21:07:13,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 21:07:13,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (1/1) ... [2022-04-06 21:07:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 21:07:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 21:07:13,311 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) [2022-04-06 21:07:13,327 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 [2022-04-06 21:07:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 21:07:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 21:07:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 21:07:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 21:07:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 21:07:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 21:07:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 21:07:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 21:07:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 21:07:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 21:07:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 21:07:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-06 21:07:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 21:07:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 21:07:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 21:07:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 21:07:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 21:07:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 21:07:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 21:07:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 21:07:13,408 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 21:07:13,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 21:07:13,506 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 21:07:13,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 21:07:13,510 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 21:07:13,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:07:13 BoogieIcfgContainer [2022-04-06 21:07:13,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 21:07:13,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 21:07:13,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 21:07:13,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 21:07:13,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 09:07:13" (1/3) ... [2022-04-06 21:07:13,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2272b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:07:13, skipping insertion in model container [2022-04-06 21:07:13,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:07:13" (2/3) ... [2022-04-06 21:07:13,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2272b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:07:13, skipping insertion in model container [2022-04-06 21:07:13,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:07:13" (3/3) ... [2022-04-06 21:07:13,518 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2022-04-06 21:07:13,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 21:07:13,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 21:07:13,548 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 21:07:13,552 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-04-06 21:07:13,553 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 21:07:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 21:07:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 21:07:13,570 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 21:07:13,571 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 21:07:13,572 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 21:07:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 21:07:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-04-06 21:07:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 21:07:13,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [829641953] [2022-04-06 21:07:13,588 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 21:07:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 2 times [2022-04-06 21:07:13,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 21:07:13,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409297181] [2022-04-06 21:07:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 21:07:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 21:07:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 21:07:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 21:07:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 21:07:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:13,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 21:07:13,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409297181] [2022-04-06 21:07:13,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409297181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 21:07:13,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 21:07:13,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 21:07:13,788 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 21:07:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [829641953] [2022-04-06 21:07:13,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [829641953] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 21:07:13,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 21:07:13,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 21:07:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265632887] [2022-04-06 21:07:13,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 21:07:13,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 21:07:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 21:07:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 21:07:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 21:07:13,808 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 21:07:13,865 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-04-06 21:07:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 21:07:13,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-06 21:07:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 21:07:13,870 INFO L225 Difference]: With dead ends: 33 [2022-04-06 21:07:13,870 INFO L226 Difference]: Without dead ends: 14 [2022-04-06 21:07:13,872 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 21:07:13,874 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 21:07:13,874 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 21:07:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-06 21:07:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-06 21:07:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-06 21:07:13,894 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-04-06 21:07:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 21:07:13,895 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-06 21:07:13,895 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-06 21:07:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-06 21:07:13,895 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 21:07:13,895 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 21:07:13,896 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 21:07:13,896 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 21:07:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 21:07:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2022-04-06 21:07:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 21:07:13,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [235085846] [2022-04-06 21:07:13,908 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-06 21:07:13,909 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 21:07:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 2 times [2022-04-06 21:07:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 21:07:13,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656700558] [2022-04-06 21:07:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 21:07:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 21:07:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 21:07:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 21:07:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 21:07:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:14,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 21:07:14,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656700558] [2022-04-06 21:07:14,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656700558] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 21:07:14,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798778297] [2022-04-06 21:07:14,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 21:07:14,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 21:07:14,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 21:07:14,084 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) [2022-04-06 21:07:14,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 21:07:14,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 21:07:14,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 21:07:14,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 21:07:14,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 21:07:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:14,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 21:07:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:14,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798778297] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 21:07:14,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 21:07:14,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-04-06 21:07:14,419 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 21:07:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [235085846] [2022-04-06 21:07:14,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [235085846] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 21:07:14,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 21:07:14,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 21:07:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170244138] [2022-04-06 21:07:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 21:07:14,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 21:07:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 21:07:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 21:07:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-06 21:07:14,421 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 21:07:14,528 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-06 21:07:14,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 21:07:14,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-06 21:07:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 21:07:14,529 INFO L225 Difference]: With dead ends: 20 [2022-04-06 21:07:14,529 INFO L226 Difference]: Without dead ends: 15 [2022-04-06 21:07:14,531 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-04-06 21:07:14,532 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 21:07:14,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 21:07:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-06 21:07:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-06 21:07:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-06 21:07:14,535 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-04-06 21:07:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 21:07:14,536 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-06 21:07:14,536 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-06 21:07:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-06 21:07:14,536 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 21:07:14,536 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 21:07:14,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 21:07:14,752 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 21:07:14,753 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 21:07:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 21:07:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 106583640, now seen corresponding path program 3 times [2022-04-06 21:07:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 21:07:14,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2017980598] [2022-04-06 21:07:14,756 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-06 21:07:14,756 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 21:07:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 106583640, now seen corresponding path program 4 times [2022-04-06 21:07:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 21:07:14,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328436861] [2022-04-06 21:07:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 21:07:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 21:07:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 21:07:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 21:07:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 21:07:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:14,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 21:07:14,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328436861] [2022-04-06 21:07:14,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328436861] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 21:07:14,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679645145] [2022-04-06 21:07:14,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 21:07:14,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 21:07:14,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 21:07:14,925 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) [2022-04-06 21:07:14,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 21:07:14,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 21:07:14,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 21:07:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 21:07:14,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 21:07:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:15,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 21:07:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 21:07:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679645145] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 21:07:15,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 21:07:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-04-06 21:07:15,212 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 21:07:15,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2017980598] [2022-04-06 21:07:15,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2017980598] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 21:07:15,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 21:07:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 21:07:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976382733] [2022-04-06 21:07:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 21:07:15,213 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 21:07:15,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 21:07:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 21:07:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-04-06 21:07:15,214 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 21:07:15,311 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-06 21:07:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 21:07:15,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-06 21:07:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 21:07:15,312 INFO L225 Difference]: With dead ends: 15 [2022-04-06 21:07:15,312 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 21:07:15,313 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-04-06 21:07:15,315 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 21:07:15,315 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 21:07:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 21:07:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 21:07:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-04-06 21:07:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 21:07:15,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-04-06 21:07:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 21:07:15,316 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 21:07:15,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 21:07:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 21:07:15,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 21:07:15,322 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 21:07:15,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-06 21:07:15,538 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 21:07:15,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 21:07:15,585 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-04-06 21:07:15,585 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-04-06 21:07:15,585 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-04-06 21:07:15,585 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2022-04-06 21:07:15,585 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-06 21:07:15,585 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 29) the Hoare annotation is: true [2022-04-06 21:07:15,586 INFO L885 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-04-06 21:07:15,586 INFO L878 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse0 (+ main_~k~0 main_~j~0))) (and (<= main_~n~0 .cse0) (< 0 (+ main_~k~0 1)) (not (<= main_~n~0 0)) (<= .cse0 main_~n~0))) [2022-04-06 21:07:15,586 INFO L878 garLoopResultBuilder]: At program point L24-3(lines 24 26) the Hoare annotation is: (and (< 0 (+ main_~k~0 1)) (not (<= main_~n~0 0)) (<= main_~k~0 0)) [2022-04-06 21:07:15,586 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 29) the Hoare annotation is: true [2022-04-06 21:07:15,586 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 21:07:15,586 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 21:07:15,586 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 21:07:15,586 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 21:07:15,586 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 21:07:15,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 21:07:15,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 21:07:15,587 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 21:07:15,587 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 21:07:15,587 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-04-06 21:07:15,587 INFO L885 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: true [2022-04-06 21:07:15,587 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: true [2022-04-06 21:07:15,587 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 21:07:15,589 INFO L719 BasicCegarLoop]: Path program histogram: [4, 2] [2022-04-06 21:07:15,590 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 21:07:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 09:07:15 BoogieIcfgContainer [2022-04-06 21:07:15,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 21:07:15,601 INFO L158 Benchmark]: Toolchain (without parser) took 2540.74ms. Allocated memory was 215.0MB in the beginning and 345.0MB in the end (delta: 130.0MB). Free memory was 161.8MB in the beginning and 239.2MB in the end (delta: -77.4MB). Peak memory consumption was 53.6MB. Max. memory is 8.0GB. [2022-04-06 21:07:15,602 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 178.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 21:07:15,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.41ms. Allocated memory is still 215.0MB. Free memory was 161.6MB in the beginning and 191.1MB in the end (delta: -29.5MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. [2022-04-06 21:07:15,607 INFO L158 Benchmark]: Boogie Preprocessor took 18.56ms. Allocated memory is still 215.0MB. Free memory was 191.1MB in the beginning and 189.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 21:07:15,609 INFO L158 Benchmark]: RCFGBuilder took 260.32ms. Allocated memory is still 215.0MB. Free memory was 189.7MB in the beginning and 179.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 21:07:15,609 INFO L158 Benchmark]: TraceAbstraction took 2086.01ms. Allocated memory was 215.0MB in the beginning and 345.0MB in the end (delta: 130.0MB). Free memory was 179.2MB in the beginning and 239.2MB in the end (delta: -60.0MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2022-04-06 21:07:15,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 178.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.41ms. Allocated memory is still 215.0MB. Free memory was 161.6MB in the beginning and 191.1MB in the end (delta: -29.5MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.56ms. Allocated memory is still 215.0MB. Free memory was 191.1MB in the beginning and 189.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 260.32ms. Allocated memory is still 215.0MB. Free memory was 189.7MB in the beginning and 179.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2086.01ms. Allocated memory was 215.0MB in the beginning and 345.0MB in the end (delta: 130.0MB). Free memory was 179.2MB in the beginning and 239.2MB in the end (delta: -60.0MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 37 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 32 PreInvPairs, 45 NumberOfFragments, 68 HoareAnnotationTreeSize, 32 FomulaSimplifications, 35 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((n <= k + j && 0 < k + 1) && !(n <= 0)) && k + j <= n - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-06 21:07:15,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...