/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/array-fpi/ifeqn1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:16:42,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:16:42,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:16:42,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:16:42,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:16:42,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:16:42,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:16:42,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:16:42,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:16:42,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:16:42,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:16:42,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:16:42,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:16:42,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:16:42,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:16:42,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:16:42,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:16:42,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:16:42,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:16:42,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:16:42,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:16:42,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:16:42,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:16:42,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:16:42,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:16:42,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:16:42,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:16:42,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:16:42,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:16:42,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 23:16:42,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 23:16:42,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 23:16:42,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 23:16:42,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 23:16:42,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 23:16:42,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 23:16:42,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 23:16:42,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 23:16:42,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:16:42,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:16:42,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:16:42,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:16:42,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:16:42,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:16:42,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:16:42,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:16:42,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:16:42,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:16:42,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:16:42,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:16:42,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:16:42,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:16:42,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:16:42,930 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:16:42,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:16:43,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:16:43,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:16:43,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:16:43,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:16:43,155 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:16:43,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c [2022-01-31 23:16:43,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d8ce74f/bad24365e119480ea0e84d7c944994c4/FLAG001f37e21 [2022-01-31 23:16:43,532 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:16:43,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c [2022-01-31 23:16:43,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d8ce74f/bad24365e119480ea0e84d7c944994c4/FLAG001f37e21 [2022-01-31 23:16:43,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d8ce74f/bad24365e119480ea0e84d7c944994c4 [2022-01-31 23:16:43,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:16:43,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:16:43,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:16:43,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:16:43,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:16:43,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:16:43" (1/1) ... [2022-01-31 23:16:43,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41604f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:43, skipping insertion in model container [2022-01-31 23:16:43,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:16:43" (1/1) ... [2022-01-31 23:16:43,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:16:43,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:16:44,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c[590,603] [2022-01-31 23:16:44,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:16:44,134 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:16:44,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c[590,603] [2022-01-31 23:16:44,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:16:44,206 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:16:44,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44 WrapperNode [2022-01-31 23:16:44,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:16:44,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:16:44,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:16:44,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:16:44,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:16:44,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:16:44,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:16:44,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:16:44,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (1/1) ... [2022-01-31 23:16:44,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:16:44,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:16:44,296 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) [2022-01-31 23:16:44,321 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 [2022-01-31 23:16:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:16:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:16:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:16:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:16:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:16:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:16:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:16:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 23:16:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:16:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 23:16:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:16:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:16:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:16:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:16:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:16:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:16:44,419 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:16:44,420 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:16:44,533 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:16:44,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:16:44,538 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 23:16:44,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:16:44 BoogieIcfgContainer [2022-01-31 23:16:44,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:16:44,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:16:44,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:16:44,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:16:44,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:16:43" (1/3) ... [2022-01-31 23:16:44,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6176de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:16:44, skipping insertion in model container [2022-01-31 23:16:44,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:44" (2/3) ... [2022-01-31 23:16:44,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6176de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:16:44, skipping insertion in model container [2022-01-31 23:16:44,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:16:44" (3/3) ... [2022-01-31 23:16:44,546 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2022-01-31 23:16:44,550 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:16:44,550 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:16:44,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:16:44,589 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 [2022-01-31 23:16:44,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:16:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:16:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 23:16:44,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:16:44,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:16:44,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:16:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:16:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1482202103, now seen corresponding path program 1 times [2022-01-31 23:16:44,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:16:44,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924191485] [2022-01-31 23:16:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:16:44,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:16:44,730 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:16:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:16:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:16:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:16:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:16:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:16:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:16:44,846 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:16:44,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924191485] [2022-01-31 23:16:44,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [924191485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:16:44,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:16:44,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:16:44,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085338793] [2022-01-31 23:16:44,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:16:44,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:16:44,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:16:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:16:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:16:44,888 INFO L87 Difference]: Start difference. First operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:16:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:16:44,978 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-01-31 23:16:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:16:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-01-31 23:16:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:16:44,986 INFO L225 Difference]: With dead ends: 62 [2022-01-31 23:16:44,986 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 23:16:44,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:16:44,991 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:16:44,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:16:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 23:16:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 23:16:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:16:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 23:16:45,025 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2022-01-31 23:16:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:16:45,026 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 23:16:45,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:16:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 23:16:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 23:16:45,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:16:45,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:16:45,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:16:45,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:16:45,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:16:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash -539484107, now seen corresponding path program 1 times [2022-01-31 23:16:45,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:16:45,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732736230] [2022-01-31 23:16:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:16:45,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:16:45,033 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:16:45,055 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:16:45,056 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:16:45,061 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:16:45,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:16:45,065 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:16:45,067 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:16:45,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:16:45 BoogieIcfgContainer [2022-01-31 23:16:45,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:16:45,078 INFO L158 Benchmark]: Toolchain (without parser) took 1099.71ms. Allocated memory was 187.7MB in the beginning and 233.8MB in the end (delta: 46.1MB). Free memory was 134.7MB in the beginning and 163.5MB in the end (delta: -28.7MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2022-01-31 23:16:45,078 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory was 151.7MB in the beginning and 151.6MB in the end (delta: 89.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:16:45,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.01ms. Allocated memory was 187.7MB in the beginning and 233.8MB in the end (delta: 46.1MB). Free memory was 134.6MB in the beginning and 207.0MB in the end (delta: -72.4MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-01-31 23:16:45,080 INFO L158 Benchmark]: Boogie Preprocessor took 42.02ms. Allocated memory is still 233.8MB. Free memory was 207.0MB in the beginning and 205.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:16:45,080 INFO L158 Benchmark]: RCFGBuilder took 289.59ms. Allocated memory is still 233.8MB. Free memory was 205.4MB in the beginning and 192.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:16:45,080 INFO L158 Benchmark]: TraceAbstraction took 536.08ms. Allocated memory is still 233.8MB. Free memory was 191.8MB in the beginning and 163.5MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-31 23:16:45,082 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 187.7MB. Free memory was 151.7MB in the beginning and 151.6MB in the end (delta: 89.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.01ms. Allocated memory was 187.7MB in the beginning and 233.8MB in the end (delta: 46.1MB). Free memory was 134.6MB in the beginning and 207.0MB in the end (delta: -72.4MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.02ms. Allocated memory is still 233.8MB. Free memory was 207.0MB in the beginning and 205.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 289.59ms. Allocated memory is still 233.8MB. Free memory was 205.4MB in the beginning and 192.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 536.08ms. Allocated memory is still 233.8MB. Free memory was 191.8MB in the beginning and 163.5MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. 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 - UnprovableResult [Line: 15]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L31] COND FALSE !(i