/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/loop1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:53:25,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:53:25,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:53:25,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:53:25,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:53:25,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:53:25,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:53:25,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:53:25,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:53:25,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:53:25,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:53:25,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:53:25,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:53:25,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:53:25,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:53:25,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:53:25,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:53:25,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:53:25,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:53:25,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:53:25,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:53:25,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:53:25,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:53:25,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:53:25,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 16:53:25,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:53:25,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:53:25,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:53:25,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:53:25,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:53:25,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:53:25,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:53:25,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:53:25,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:53:25,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:53:25,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:53:25,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:53:25,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:53:25,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:53:25,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:53:25,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:53:25,171 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:53:25,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:53:25,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:53:25,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:53:25,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:53:25,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:53:25,372 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:53:25,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2022-01-31 16:53:25,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2f848de/a77dd75f9b114c5cbb053151329b402f/FLAG26d8be150 [2022-01-31 16:53:25,792 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:53:25,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2022-01-31 16:53:25,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2f848de/a77dd75f9b114c5cbb053151329b402f/FLAG26d8be150 [2022-01-31 16:53:25,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2f848de/a77dd75f9b114c5cbb053151329b402f [2022-01-31 16:53:25,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:53:25,817 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:53:25,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:53:25,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:53:25,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:53:25,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7a1453 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 16:53:25,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:53:25" (1/1) ... [2022-01-31 16:53:25,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:53:25,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:53:26,002 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/loop1-2.c[538,551] [2022-01-31 16:53:26,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:53:26,024 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:53:26,033 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/loop1-2.c[538,551] [2022-01-31 16:53:26,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:53:26,046 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:53:26,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26 WrapperNode [2022-01-31 16:53:26,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:53:26,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:53:26,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:53:26,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:53:26,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:53:26,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:53:26,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:53:26,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:53:26,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (1/1) ... [2022-01-31 16:53:26,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:53:26,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:53:26,116 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 16:53:26,134 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 16:53:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:53:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:53:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:53:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 16:53:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 16:53:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:53:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 16:53:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:53:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:53:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:53:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:53:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 16:53:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 16:53:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 16:53:26,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:53:26,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:53:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:53:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:53:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:53:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:53:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:53:26,205 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:53:26,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:53:26,292 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:53:26,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:53:26,295 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 16:53:26,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:53:26 BoogieIcfgContainer [2022-01-31 16:53:26,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:53:26,297 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:53:26,297 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:53:26,297 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:53:26,299 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 16:53:26,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:53:26 BasicIcfg [2022-01-31 16:53:26,341 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:53:26,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:53:26,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:53:26,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:53:26,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:53:25" (1/4) ... [2022-01-31 16:53:26,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af863a9 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 16:53:26,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:53:26" (2/4) ... [2022-01-31 16:53:26,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af863a9 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 16:53:26,345 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 16:53:26,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af863a9 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 16:53:26,345 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 16:53:26,346 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-2.cJordan [2022-01-31 16:53:26,349 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:53:26,349 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 16:53:26,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:53:26,396 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 16:53:26,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 16:53:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 16:53:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 16:53:26,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:26,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:26,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 448412652, now seen corresponding path program 1 times [2022-01-31 16:53:26,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:26,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605029671] [2022-01-31 16:53:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:26,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:53:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:53:26,555 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 16:53:26,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:53:26,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605029671] [2022-01-31 16:53:26,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605029671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:53:26,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:53:26,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 16:53:26,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101516929] [2022-01-31 16:53:26,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:53:26,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 16:53:26,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:53:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 16:53:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 16:53:26,586 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:53:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:53:26,620 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-01-31 16:53:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 16:53:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 16:53:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:53:26,630 INFO L225 Difference]: With dead ends: 20 [2022-01-31 16:53:26,630 INFO L226 Difference]: Without dead ends: 13 [2022-01-31 16:53:26,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:53:26,637 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 16:53:26,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 16:53:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-31 16:53:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-31 16:53:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:53:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-31 16:53:26,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-01-31 16:53:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:53:26,662 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-31 16:53:26,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:53:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-31 16:53:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 16:53:26,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:53:26,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:53:26,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:53:26,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:53:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:53:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1073951069, now seen corresponding path program 1 times [2022-01-31 16:53:26,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:53:26,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059717577] [2022-01-31 16:53:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:53:26,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:53:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:53:26,703 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 16:53:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 16:53:26,734 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 16:53:26,735 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 16:53:26,736 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 16:53:26,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:53:26,739 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 16:53:26,742 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 16:53:26,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:53:26 BasicIcfg [2022-01-31 16:53:26,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 16:53:26,765 INFO L158 Benchmark]: Toolchain (without parser) took 947.84ms. Allocated memory is still 205.5MB. Free memory was 159.6MB in the beginning and 147.3MB in the end (delta: 12.3MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,766 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 205.5MB. Free memory is still 176.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 16:53:26,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.79ms. Allocated memory is still 205.5MB. Free memory was 159.3MB in the beginning and 184.0MB in the end (delta: -24.6MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,769 INFO L158 Benchmark]: Boogie Preprocessor took 32.46ms. Allocated memory is still 205.5MB. Free memory was 184.0MB in the beginning and 182.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,769 INFO L158 Benchmark]: RCFGBuilder took 215.33ms. Allocated memory is still 205.5MB. Free memory was 182.4MB in the beginning and 173.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,770 INFO L158 Benchmark]: IcfgTransformer took 44.60ms. Allocated memory is still 205.5MB. Free memory was 172.4MB in the beginning and 171.4MB 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 422.06ms. Allocated memory is still 205.5MB. Free memory was 171.4MB in the beginning and 147.3MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-01-31 16:53:26,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 205.5MB. Free memory is still 176.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 227.79ms. Allocated memory is still 205.5MB. Free memory was 159.3MB in the beginning and 184.0MB in the end (delta: -24.6MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.46ms. Allocated memory is still 205.5MB. Free memory was 184.0MB in the beginning and 182.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 215.33ms. Allocated memory is still 205.5MB. Free memory was 182.4MB in the beginning and 173.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 44.60ms. Allocated memory is still 205.5MB. Free memory was 172.4MB in the beginning and 171.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 422.06ms. Allocated memory is still 205.5MB. Free memory was 171.4MB in the beginning and 147.3MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. 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: 14]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1, term=1, x=50] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, temp=0, x=50] [L37] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 19 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 16:53:26,803 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...