/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-benchs/rlim_invariant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:45:09,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:45:09,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:45:09,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:45:09,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:45:09,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:45:09,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:45:09,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:45:09,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:45:09,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:45:09,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:45:09,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:45:09,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:45:09,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:45:09,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:45:09,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:45:09,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:45:09,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:45:09,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:45:09,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:45:09,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:45:09,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:45:09,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:45:09,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:45:09,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 16:45:09,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:45:09,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:45:09,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:45:09,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:45:09,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:45:09,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:45:09,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:45:09,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:45:09,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:45:09,639 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:45:09,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:45:09,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:45:09,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:45:09,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:45:09,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:45:09,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:45:09,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:45:09,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:45:09,641 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:45:09,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:45:09,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:45:09,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:45:09,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:45:09,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:45:09,858 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:45:09,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c [2022-01-31 16:45:09,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4089b60/984bc7809ce2480c943a1f0d8aa293a2/FLAGa2828044b [2022-01-31 16:45:10,312 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:45:10,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_invariant.c [2022-01-31 16:45:10,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4089b60/984bc7809ce2480c943a1f0d8aa293a2/FLAGa2828044b [2022-01-31 16:45:10,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4089b60/984bc7809ce2480c943a1f0d8aa293a2 [2022-01-31 16:45:10,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:45:10,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:45:10,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:45:10,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:45:10,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:45:10,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e65e815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10, skipping insertion in model container [2022-01-31 16:45:10,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:45:10,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:45:10,493 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/rlim_invariant.c[451,464] [2022-01-31 16:45:10,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:45:10,521 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:45:10,532 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/rlim_invariant.c[451,464] [2022-01-31 16:45:10,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:45:10,556 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:45:10,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10 WrapperNode [2022-01-31 16:45:10,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:45:10,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:45:10,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:45:10,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:45:10,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:45:10,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:45:10,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:45:10,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:45:10,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:45:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:45:10,630 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 16:45:10,632 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 16:45:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:45:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:45:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:45:10,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 16:45:10,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 16:45:10,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:45:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:45:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:45:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:45:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:45:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 16:45:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 16:45:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 16:45:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:45:10,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:45:10,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:45:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:45:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:45:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:45:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:45:10,727 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:45:10,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:45:10,899 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:45:10,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:45:10,905 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 16:45:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:10 BoogieIcfgContainer [2022-01-31 16:45:10,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:45:10,907 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:45:10,907 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:45:10,908 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:45:10,910 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:10" (1/1) ... [2022-01-31 16:45:10,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:45:10 BasicIcfg [2022-01-31 16:45:10,927 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:45:10,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:45:10,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:45:10,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:45:10,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:45:10" (1/4) ... [2022-01-31 16:45:10,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ffe267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:10, skipping insertion in model container [2022-01-31 16:45:10,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:10" (2/4) ... [2022-01-31 16:45:10,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ffe267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:10, skipping insertion in model container [2022-01-31 16:45:10,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:10" (3/4) ... [2022-01-31 16:45:10,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ffe267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:45:10, skipping insertion in model container [2022-01-31 16:45:10,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:45:10" (4/4) ... [2022-01-31 16:45:10,933 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.cJordan [2022-01-31 16:45:10,938 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:45:10,938 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 16:45:11,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:45:11,037 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 16:45:11,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 16:45:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 16:45:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 16:45:11,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:45:11,068 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 16:45:11,068 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:45:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:45:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash 102045304, now seen corresponding path program 1 times [2022-01-31 16:45:11,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:45:11,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113820763] [2022-01-31 16:45:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:45:11,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:45:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:45:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:45:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:45:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 16:45:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:45:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 16:45:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:45:11,283 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 16:45:11,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:45:11,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113820763] [2022-01-31 16:45:11,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113820763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:45:11,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:45:11,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 16:45:11,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059661148] [2022-01-31 16:45:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:45:11,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 16:45:11,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:45:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 16:45:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 16:45:11,313 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16:45:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:45:11,352 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-01-31 16:45:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 16:45:11,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23 [2022-01-31 16:45:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:45:11,360 INFO L225 Difference]: With dead ends: 29 [2022-01-31 16:45:11,360 INFO L226 Difference]: Without dead ends: 24 [2022-01-31 16:45:11,361 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 16:45:11,364 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 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 16:45:11,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 16:45:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-31 16:45:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-31 16:45:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 16:45:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-31 16:45:11,393 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 23 [2022-01-31 16:45:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:45:11,394 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-31 16:45:11,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16:45:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-31 16:45:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 16:45:11,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:45:11,396 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 16:45:11,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:45:11,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:45:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:45:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2083999512, now seen corresponding path program 1 times [2022-01-31 16:45:11,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:45:11,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253113022] [2022-01-31 16:45:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:45:11,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:45:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:45:11,417 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 16:45:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:45:11,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 16:45:11,445 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 16:45:11,447 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 16:45:11,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:45:11,450 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 16:45:11,453 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 16:45:11,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:45:11 BasicIcfg [2022-01-31 16:45:11,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 16:45:11,469 INFO L158 Benchmark]: Toolchain (without parser) took 1132.20ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 125.2MB in the beginning and 173.3MB in the end (delta: -48.0MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. [2022-01-31 16:45:11,469 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 16:45:11,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.59ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 125.1MB in the beginning and 214.6MB in the end (delta: -89.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-31 16:45:11,470 INFO L158 Benchmark]: Boogie Preprocessor took 44.56ms. Allocated memory is still 241.2MB. Free memory was 214.6MB in the beginning and 213.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 16:45:11,470 INFO L158 Benchmark]: RCFGBuilder took 301.93ms. Allocated memory is still 241.2MB. Free memory was 213.1MB in the beginning and 202.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 16:45:11,471 INFO L158 Benchmark]: IcfgTransformer took 19.89ms. Allocated memory is still 241.2MB. Free memory was 202.6MB in the beginning and 201.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 16:45:11,471 INFO L158 Benchmark]: TraceAbstraction took 539.76ms. Allocated memory is still 241.2MB. Free memory was 200.5MB in the beginning and 173.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-01-31 16:45:11,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.59ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 125.1MB in the beginning and 214.6MB in the end (delta: -89.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.56ms. Allocated memory is still 241.2MB. Free memory was 214.6MB in the beginning and 213.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 301.93ms. Allocated memory is still 241.2MB. Free memory was 213.1MB in the beginning and 202.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 19.89ms. Allocated memory is still 241.2MB. Free memory was 202.6MB in the beginning and 201.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 539.76ms. Allocated memory is still 241.2MB. Free memory was 200.5MB in the beginning and 173.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=52, i=0, X=51] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=52, i=0, X=51] [L26] S = Y [L27] Y = X [L28] R = X - S VAL [D=52, i=0, S=50, X=51, Y=51] [L29] COND TRUE R <= -D [L29] Y = S - D VAL [D=52, i=0, S=50, X=51] [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) VAL [\old(cond)=0] [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 32 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, 29 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=29occurred 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, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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 16:45:11,502 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...