/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:50:44,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:50:44,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:50:44,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:50:44,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:50:44,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:50:44,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:50:44,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:50:44,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:50:44,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:50:44,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:50:44,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:50:44,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:50:44,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:50:44,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:50:44,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:50:44,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:50:44,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:50:44,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:50:44,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:50:44,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:50:44,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:50:44,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:50:44,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:50:44,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 16:50:44,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:50:44,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:50:44,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:50:44,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:50:44,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:50:44,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:50:44,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:50:44,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:50:44,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:50:44,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:50:44,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:50:44,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:50:44,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:50:44,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:50:44,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:50:44,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:50:44,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:50:44,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:50:44,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:50:44,797 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:50:44,797 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:50:45,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:50:45,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:50:45,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:50:45,046 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:50:45,047 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:50:45,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2022-01-31 16:50:45,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473ff1cbe/1682db846439463dbd8a1600eccfbce3/FLAGf2063900f [2022-01-31 16:50:45,488 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:50:45,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2022-01-31 16:50:45,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473ff1cbe/1682db846439463dbd8a1600eccfbce3/FLAGf2063900f [2022-01-31 16:50:45,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473ff1cbe/1682db846439463dbd8a1600eccfbce3 [2022-01-31 16:50:45,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:50:45,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:50:45,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:50:45,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:50:45,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:50:45,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:50:45" (1/1) ... [2022-01-31 16:50:45,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c6182f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:45, skipping insertion in model container [2022-01-31 16:50:45,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:50:45" (1/1) ... [2022-01-31 16:50:45,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:50:45,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:50:46,099 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-newlib/double_req_bl_1011a.c[1210,1223] [2022-01-31 16:50:46,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:50:46,108 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:50:46,138 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-newlib/double_req_bl_1011a.c[1210,1223] [2022-01-31 16:50:46,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:50:46,151 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:50:46,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46 WrapperNode [2022-01-31 16:50:46,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:50:46,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:50:46,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:50:46,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:50:46,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:50:46,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:50:46,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:50:46,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:50:46,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:50:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:50:46,224 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 16:50:46,250 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 16:50:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:50:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:50:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:50:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-01-31 16:50:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-01-31 16:50:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:50:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:50:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:50:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:50:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:50:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-01-31 16:50:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 16:50:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 16:50:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:50:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:50:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-01-31 16:50:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:50:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 16:50:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:50:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:50:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:50:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:50:46,354 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:50:46,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:50:46,505 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:50:46,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:50:46,510 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-31 16:50:46,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:46 BoogieIcfgContainer [2022-01-31 16:50:46,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:50:46,512 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:50:46,512 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:50:46,518 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:50:46,521 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:46" (1/1) ... [2022-01-31 16:50:46,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:50:46 BasicIcfg [2022-01-31 16:50:46,543 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:50:46,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:50:46,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:50:46,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:50:46,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:50:45" (1/4) ... [2022-01-31 16:50:46,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e177cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:50:46, skipping insertion in model container [2022-01-31 16:50:46,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:46" (2/4) ... [2022-01-31 16:50:46,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e177cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:50:46, skipping insertion in model container [2022-01-31 16:50:46,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:46" (3/4) ... [2022-01-31 16:50:46,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e177cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:50:46, skipping insertion in model container [2022-01-31 16:50:46,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:50:46" (4/4) ... [2022-01-31 16:50:46,559 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.cJordan [2022-01-31 16:50:46,570 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:50:46,571 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 16:50:46,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:50:46,637 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 16:50:46,637 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 16:50:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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 16:50:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 16:50:46,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:50:46,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:50:46,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:50:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:50:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 351941706, now seen corresponding path program 1 times [2022-01-31 16:50:46,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:50:46,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880962004] [2022-01-31 16:50:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:50:46,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:50:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:50:46,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:50:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:50:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:50:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:50:46,871 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 16:50:46,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:50:46,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880962004] [2022-01-31 16:50:46,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880962004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:50:46,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:50:46,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:50:46,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500287624] [2022-01-31 16:50:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:50:46,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:50:46,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:50:46,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:50:46,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:50:46,899 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 16:50:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:50:46,975 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-01-31 16:50:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 16:50:46,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-01-31 16:50:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:50:46,994 INFO L225 Difference]: With dead ends: 32 [2022-01-31 16:50:46,994 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 16:50:46,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 16:50:46,998 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 16:50:46,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 16:50:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 16:50:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-31 16:50:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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 16:50:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-01-31 16:50:47,024 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2022-01-31 16:50:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:50:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-01-31 16:50:47,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 16:50:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-01-31 16:50:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 16:50:47,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:50:47,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:50:47,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:50:47,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:50:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:50:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash 661244933, now seen corresponding path program 1 times [2022-01-31 16:50:47,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:50:47,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976213658] [2022-01-31 16:50:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:50:47,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:50:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:50:47,068 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 16:50:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:50:47,137 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 16:50:47,137 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 16:50:47,140 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 16:50:47,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:50:47,145 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 16:50:47,147 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 16:50:47,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:50:47 BasicIcfg [2022-01-31 16:50:47,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 16:50:47,171 INFO L158 Benchmark]: Toolchain (without parser) took 1281.03ms. Allocated memory is still 195.0MB. Free memory was 147.9MB in the beginning and 127.5MB in the end (delta: 20.3MB). Peak memory consumption was 20.2MB. Max. memory is 8.0GB. [2022-01-31 16:50:47,172 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 16:50:47,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.45ms. Allocated memory is still 195.0MB. Free memory was 147.7MB in the beginning and 173.1MB in the end (delta: -25.4MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-01-31 16:50:47,173 INFO L158 Benchmark]: Boogie Preprocessor took 41.41ms. Allocated memory is still 195.0MB. Free memory was 173.1MB in the beginning and 171.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 16:50:47,173 INFO L158 Benchmark]: RCFGBuilder took 316.73ms. Allocated memory is still 195.0MB. Free memory was 171.6MB in the beginning and 160.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 16:50:47,174 INFO L158 Benchmark]: IcfgTransformer took 30.65ms. Allocated memory is still 195.0MB. Free memory was 160.0MB in the beginning and 158.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 16:50:47,174 INFO L158 Benchmark]: TraceAbstraction took 627.10ms. Allocated memory is still 195.0MB. Free memory was 157.9MB in the beginning and 127.5MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-01-31 16:50:47,180 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 195.0MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.45ms. Allocated memory is still 195.0MB. Free memory was 147.7MB in the beginning and 173.1MB in the end (delta: -25.4MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.41ms. Allocated memory is still 195.0MB. Free memory was 173.1MB in the beginning and 171.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 316.73ms. Allocated memory is still 195.0MB. Free memory was 171.6MB in the beginning and 160.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 30.65ms. Allocated memory is still 195.0MB. Free memory was 160.0MB in the beginning and 158.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 627.10ms. Allocated memory is still 195.0MB. Free memory was 157.9MB in the beginning and 127.5MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. 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: 54]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L49] double x = 0.0; VAL [x=0] [L50] CALL, EXPR fabs_double(x) VAL [\old(x)=0] [L28] __uint32_t high; VAL [\old(x)=0, x=0] [L30] ieee_double_shape_type gh_u; [L31] gh_u.value = (x) [L32] EXPR gh_u.parts.msw [L32] (high) = gh_u.parts.msw [L35] ieee_double_shape_type sh_u; [L36] sh_u.value = (x) [L37] sh_u.parts.msw = (high & 0x7fffffff) [L38] EXPR sh_u.value [L38] (x) = sh_u.value [L40] return x; VAL [\old(x)=0, \result=0, high=55, x=0] [L50] RET, EXPR fabs_double(x) VAL [fabs_double(x)=0, x=0] [L50] double res = fabs_double(x); [L53] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L53] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L54] reach_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 27 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 16:50:47,208 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...