/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/loops/matrix-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:45:21,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:45:21,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:45:21,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 02:45:21,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 02:45:21,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 02:45:21,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 02:45:21,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 02:45:21,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 02:45:21,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 02:45:21,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 02:45:21,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 02:45:21,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 02:45:21,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 02:45:21,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 02:45:21,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 02:45:21,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 02:45:21,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 02:45:21,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 02:45:21,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 02:45:21,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 02:45:21,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 02:45:21,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 02:45:21,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 02:45:21,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-24 02:45:21,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-24 02:45:21,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-24 02:45:21,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-24 02:45:21,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-24 02:45:21,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-24 02:45:21,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-24 02:45:21,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-24 02:45:21,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-24 02:45:21,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-24 02:45:21,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-24 02:45:21,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-24 02:45:21,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-24 02:45:21,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-24 02:45:21,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:45:21,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:45:21,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:45:21,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 02:45:21,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:45:21,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:45:21,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:45:21,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:45:21,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:45:21,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:45:21,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:45:21,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:45:21,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:45:21,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:45:21,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:45:21,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:45:21,989 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 02:45:21,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:45:22,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:45:22,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:45:22,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:45:22,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:45:22,188 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:45:22,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-1.c [2022-02-24 02:45:22,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0664c3dd5/25a6b2ff1cc84a59af737023a61fdbaa/FLAGf5d8c3dc3 [2022-02-24 02:45:22,634 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:45:22,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c [2022-02-24 02:45:22,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0664c3dd5/25a6b2ff1cc84a59af737023a61fdbaa/FLAGf5d8c3dc3 [2022-02-24 02:45:22,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0664c3dd5/25a6b2ff1cc84a59af737023a61fdbaa [2022-02-24 02:45:22,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:45:22,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:45:22,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:45:22,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:45:22,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:45:22,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f23b908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22, skipping insertion in model container [2022-02-24 02:45:22,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:45:22,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:45:22,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c[320,333] [2022-02-24 02:45:22,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:45:22,822 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:45:22,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c[320,333] [2022-02-24 02:45:22,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:45:22,842 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:45:22,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22 WrapperNode [2022-02-24 02:45:22,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:45:22,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:45:22,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:45:22,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:45:22,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:45:22,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:45:22,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:45:22,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:45:22,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (1/1) ... [2022-02-24 02:45:22,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:45:22,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:45:22,896 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) [2022-02-24 02:45:22,898 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 [2022-02-24 02:45:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:45:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:45:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:45:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 02:45:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:45:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:45:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:45:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:45:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:45:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:45:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:45:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:45:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:45:22,972 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:45:22,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:45:23,134 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:45:23,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:45:23,139 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-24 02:45:23,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:45:23 BoogieIcfgContainer [2022-02-24 02:45:23,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:45:23,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:45:23,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:45:23,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:45:23,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:45:22" (1/3) ... [2022-02-24 02:45:23,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a8aa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:45:23, skipping insertion in model container [2022-02-24 02:45:23,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:22" (2/3) ... [2022-02-24 02:45:23,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a8aa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:45:23, skipping insertion in model container [2022-02-24 02:45:23,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:45:23" (3/3) ... [2022-02-24 02:45:23,153 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2022-02-24 02:45:23,157 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:45:23,157 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:45:23,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:45:23,232 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=QVASR [2022-02-24 02:45:23,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:45:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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) [2022-02-24 02:45:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 02:45:23,264 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:23,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:23,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1729786458, now seen corresponding path program 1 times [2022-02-24 02:45:23,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:23,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518744902] [2022-02-24 02:45:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:23,331 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:45:23,383 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-24 02:45:23,385 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-24 02:45:23,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 02:45:23,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:45:23,398 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-24 02:45:23,400 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 02:45:23,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 02:45:23 BoogieIcfgContainer [2022-02-24 02:45:23,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 02:45:23,413 INFO L158 Benchmark]: Toolchain (without parser) took 753.32ms. Allocated memory was 179.3MB in the beginning and 283.1MB in the end (delta: 103.8MB). Free memory was 125.3MB in the beginning and 232.1MB in the end (delta: -106.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 02:45:23,414 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 02:45:23,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.71ms. Allocated memory was 179.3MB in the beginning and 283.1MB in the end (delta: 103.8MB). Free memory was 125.1MB in the beginning and 257.1MB in the end (delta: -132.1MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-02-24 02:45:23,416 INFO L158 Benchmark]: Boogie Preprocessor took 25.11ms. Allocated memory is still 283.1MB. Free memory was 257.1MB in the beginning and 255.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 02:45:23,416 INFO L158 Benchmark]: RCFGBuilder took 271.60ms. Allocated memory is still 283.1MB. Free memory was 255.5MB in the beginning and 244.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-24 02:45:23,419 INFO L158 Benchmark]: TraceAbstraction took 263.68ms. Allocated memory is still 283.1MB. Free memory was 244.3MB in the beginning and 232.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-24 02:45:23,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.71ms. Allocated memory was 179.3MB in the beginning and 283.1MB in the end (delta: 103.8MB). Free memory was 125.1MB in the beginning and 257.1MB in the end (delta: -132.1MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.11ms. Allocated memory is still 283.1MB. Free memory was 257.1MB in the beginning and 255.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.60ms. Allocated memory is still 283.1MB. Free memory was 255.5MB in the beginning and 244.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 263.68ms. Allocated memory is still 283.1MB. Free memory was 244.3MB in the beginning and 232.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. 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 - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] unsigned int N_LIN=1; [L16] unsigned int N_COL=1; [L17] unsigned int j,k; [L18] int matriz[N_COL][N_LIN], maior; [L20] maior = __VERIFIER_nondet_int() [L21] j=0 [L21] COND FALSE !(j