/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-benchs/image_filter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:53:40,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:53:40,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:53:40,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:53:40,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:53:40,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:53:40,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:53:40,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:53:40,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:53:40,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:53:40,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:53:40,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:53:40,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:53:40,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:53:40,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:53:40,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:53:40,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:53:40,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:53:40,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:53:40,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:53:40,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:53:40,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:53:40,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:53:40,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:53:40,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 22:53:40,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 22:53:40,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 22:53:40,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 22:53:40,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 22:53:40,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 22:53:40,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 22:53:40,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 22:53:40,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 22:53:40,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 22:53:40,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 22:53:40,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 22:53:40,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 22:53:40,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 22:53:40,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:53:40,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:53:40,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:53:40,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:53:40,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:53:40,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:53:40,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:53:40,410 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:53:40,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:53:40,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:53:40,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:53:40,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:53:40,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:53:40,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:53:40,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:53:40,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:53:40,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:53:40,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:53:40,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:53:40,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:53:40,413 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:53:40,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:53:40,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:53:40,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:53:40,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:53:40,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:53:40,664 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:53:40,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/image_filter.c [2022-01-31 22:53:40,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789329e25/15c644ae79084d88b97dc8a8a1996454/FLAG40ab78269 [2022-01-31 22:53:41,167 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:53:41,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/image_filter.c [2022-01-31 22:53:41,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789329e25/15c644ae79084d88b97dc8a8a1996454/FLAG40ab78269 [2022-01-31 22:53:41,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789329e25/15c644ae79084d88b97dc8a8a1996454 [2022-01-31 22:53:41,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:53:41,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:53:41,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:53:41,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:53:41,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:53:41,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc9df79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41, skipping insertion in model container [2022-01-31 22:53:41,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:53:41,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:53:41,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/image_filter.c[564,577] [2022-01-31 22:53:41,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:53:41,527 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:53:41,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/image_filter.c[564,577] [2022-01-31 22:53:41,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:53:41,624 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:53:41,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41 WrapperNode [2022-01-31 22:53:41,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:53:41,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:53:41,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:53:41,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:53:41,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:53:41,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:53:41,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:53:41,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:53:41,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (1/1) ... [2022-01-31 22:53:41,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:53:41,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:53:41,788 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 22:53:41,814 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 22:53:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:53:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:53:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:53:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:53:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 22:53:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure blur [2022-01-31 22:53:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure sobel [2022-01-31 22:53:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure filter [2022-01-31 22:53:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure sobelitereen [2022-01-31 22:53:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:53:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:53:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:53:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:53:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:53:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure blur [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure sobel [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure filter [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure sobelitereen [2022-01-31 22:53:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:53:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:53:42,101 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:53:42,102 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:53:44,700 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:53:44,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:53:44,707 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 22:53:44,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:53:44 BoogieIcfgContainer [2022-01-31 22:53:44,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:53:44,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:53:44,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:53:44,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:53:44,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:53:41" (1/3) ... [2022-01-31 22:53:44,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210b5327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:53:44, skipping insertion in model container [2022-01-31 22:53:44,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:41" (2/3) ... [2022-01-31 22:53:44,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210b5327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:53:44, skipping insertion in model container [2022-01-31 22:53:44,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:53:44" (3/3) ... [2022-01-31 22:53:44,715 INFO L111 eAbstractionObserver]: Analyzing ICFG image_filter.c [2022-01-31 22:53:44,719 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:53:44,719 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:53:44,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:53:44,762 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=JORDAN [2022-01-31 22:53:44,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:53:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 116 states have internal predecessors, (142), 74 states have call successors, (74), 8 states have call predecessors, (74), 8 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-01-31 22:53:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2022-01-31 22:53:44,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:44,878 INFO L514 BasicCegarLoop]: trace histogram [266, 266, 40, 40, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 22:53:44,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -904879058, now seen corresponding path program 1 times [2022-01-31 22:53:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:44,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147659749] [2022-01-31 22:53:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:44,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:44,977 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation