/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/loop-floats-scientific-comp/loop1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:53:24,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:53:24,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:53:24,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:53:24,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:53:24,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:53:24,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:53:24,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:53:24,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:53:24,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:53:24,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:53:24,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:53:24,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:53:24,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:53:24,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:53:24,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:53:24,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:53:24,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:53:24,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:53:24,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:53:24,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:53:24,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:53:24,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:53:24,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:53:24,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 16:53:24,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 16:53:24,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 16:53:24,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 16:53:24,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 16:53:24,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 16:53:24,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 16:53:24,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 16:53:24,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 16:53:24,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:53:24,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:53:24,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:53:24,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:53:24,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:53:24,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:53:24,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:53:24,791 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:53:24,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:53:24,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:53:24,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:53:24,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:53:24,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:53:24,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:53:24,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:53:24,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:53:24,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:53:24,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:53:24,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:53:24,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:53:24,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:53:24,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:53:24,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:53:24,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:53:24,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:53:24,795 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:53:24,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:53:25,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:53:25,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:53:25,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:53:25,046 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:53:25,047 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:53:25,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-1.c [2022-01-31 16:53:25,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff45de126/2cf3f2b93e0e4f4798e2e7ce82de0dae/FLAG81b34542d [2022-01-31 16:53:25,562 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:53:25,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-1.c [2022-01-31 16:53:25,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff45de126/2cf3f2b93e0e4f4798e2e7ce82de0dae/FLAG81b34542d [2022-01-31 16:53:25,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff45de126/2cf3f2b93e0e4f4798e2e7ce82de0dae [2022-01-31 16:53:25,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:53:25,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:53:25,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:53:25,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:53:25,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:53:25,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a58577f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25, skipping insertion in model container [2022-01-31 16:53:25,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:53:25,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:53:25,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-1.c[497,510] [2022-01-31 16:53:25,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:53:25,754 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:53:25,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-1.c[497,510] [2022-01-31 16:53:25,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:53:25,785 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:53:25,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25 WrapperNode [2022-01-31 16:53:25,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:53:25,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:53:25,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:53:25,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:53:25,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:53:25,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:53:25,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:53:25,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:53:25,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:53:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:53:25,881 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 16:53:25,907 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 16:53:25,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:53:25,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:53:25,920 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:53:25,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 16:53:25,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 16:53:25,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:53:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:53:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:53:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:53:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:53:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 16:53:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:53:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:53:25,977 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:53:25,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:53:26,119 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:53:26,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:53:26,124 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 16:53:26,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:26 BoogieIcfgContainer [2022-01-31 16:53:26,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:53:26,126 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:53:26,127 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:53:26,151 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:53:26,154 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:53:26 BasicIcfg [2022-01-31 16:53:26,180 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:53:26,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:53:26,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:53:26,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:53:26,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:53:25" (1/4) ... [2022-01-31 16:53:26,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426bf196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:53:26, skipping insertion in model container [2022-01-31 16:53:26,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:25" (2/4) ... [2022-01-31 16:53:26,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426bf196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:53:26, skipping insertion in model container [2022-01-31 16:53:26,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:26" (3/4) ... [2022-01-31 16:53:26,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426bf196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:53:26, skipping insertion in model container [2022-01-31 16:53:26,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:53:26" (4/4) ... [2022-01-31 16:53:26,187 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-1.cJordan [2022-01-31 16:53:26,191 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:53:26,191 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 16:53:26,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:53:26,287 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 16:53:26,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 16:53:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 16:53:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 16:53:26,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:26,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:26,318 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1783049561, now seen corresponding path program 1 times [2022-01-31 16:53:26,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482054377] [2022-01-31 16:53:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:26,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 16:53:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 16:53:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 16:53:26,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:26,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482054377] [2022-01-31 16:53:26,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482054377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:26,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:26,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 16:53:26,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472785593] [2022-01-31 16:53:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 16:53:26,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:26,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 16:53:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 16:53:26,541 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 16:53:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:26,604 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-01-31 16:53:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 16:53:26,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-31 16:53:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:26,619 INFO L225 Difference]: With dead ends: 27 [2022-01-31 16:53:26,619 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 16:53:26,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 16:53:26,624 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:26,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 16:53:26,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 16:53:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 16:53:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 16:53:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-31 16:53:26,652 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 22 [2022-01-31 16:53:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:26,652 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-31 16:53:26,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 16:53:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-31 16:53:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 16:53:26,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:26,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:26,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:53:26,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1929137520, now seen corresponding path program 1 times [2022-01-31 16:53:26,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:26,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201425657] [2022-01-31 16:53:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:26,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:53:26,685 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 16:53:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:53:26,725 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 16:53:26,725 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 16:53:26,727 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 16:53:26,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:53:26,734 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 16:53:26,737 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 16:53:26,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:53:26 BasicIcfg [2022-01-31 16:53:26,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 16:53:26,765 INFO L158 Benchmark]: Toolchain (without parser) took 1176.58ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 127.2MB in the beginning and 176.6MB in the end (delta: -49.4MB). Peak memory consumption was 15.6MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,765 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 16:53:26,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.69ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 127.1MB in the beginning and 217.5MB in the end (delta: -90.5MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,768 INFO L158 Benchmark]: Boogie Preprocessor took 48.66ms. Allocated memory is still 243.3MB. Free memory was 217.5MB in the beginning and 216.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,771 INFO L158 Benchmark]: RCFGBuilder took 288.67ms. Allocated memory is still 243.3MB. Free memory was 216.5MB in the beginning and 204.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,771 INFO L158 Benchmark]: IcfgTransformer took 54.98ms. Allocated memory is still 243.3MB. Free memory was 204.4MB in the beginning and 203.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,771 INFO L158 Benchmark]: TraceAbstraction took 581.43ms. Allocated memory is still 243.3MB. Free memory was 202.9MB in the beginning and 176.6MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.69ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 127.1MB in the beginning and 217.5MB in the end (delta: -90.5MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.66ms. Allocated memory is still 243.3MB. Free memory was 217.5MB in the beginning and 216.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 288.67ms. Allocated memory is still 243.3MB. Free memory was 216.5MB in the beginning and 204.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 54.98ms. Allocated memory is still 243.3MB. Free memory was 204.4MB in the beginning and 203.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 581.43ms. Allocated memory is still 243.3MB. Free memory was 202.9MB in the beginning and 176.6MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. 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: 13]: 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 22, overapproximation of someBinaryFLOATComparisonOperation at line 39, overapproximation of someBinaryArithmeticFLOAToperation at line 31. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] CALL assume_abort_if_not(x > -1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x > -1.0) VAL [x=50] [L22] CALL assume_abort_if_not(x < 1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L22] RET assume_abort_if_not(x < 1.0) VAL [x=50] [L23] float exp = 1.0 ; [L24] float term = 1.0 ; [L25] unsigned int count = 1 ; [L26] float result = 2*(1/(1-x)) ; [L27] int temp ; VAL [count=1, exp=1, term=1, x=50] [L29] COND TRUE 1 [L31] term = term * (x/count) [L32] exp = exp + term [L33] count++ [L35] temp = __VERIFIER_nondet_int() [L36] COND TRUE temp ==0 VAL [count=2, temp=0, x=50] [L39] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 25 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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 16:53:26,819 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...