/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-benchs/exp_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:53:03,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:53:03,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:53:03,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:53:03,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:53:03,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:53:03,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:53:03,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:53:03,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:53:03,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:53:03,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:53:03,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:53:03,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:53:03,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:53:03,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:53:03,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:53:03,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:53:03,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:53:03,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:53:03,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:53:03,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:53:03,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:53:03,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:53:03,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:53:03,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:53:03,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:53:03,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:53:03,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:53:03,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:53:03,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:53:03,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:53:03,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:53:03,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:53:03,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:53:03,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:53:03,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:53:03,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:53:03,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:53:03,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:53:03,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:53:03,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:53:03,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:53:03,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:53:03,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:53:03,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:53:03,655 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:53:03,655 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:53:03,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:53:03,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:53:03,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:53:03,878 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:53:03,878 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:53:03,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/exp_loop.c [2022-01-31 22:53:03,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60db82d0/965a11b1d3994f38b8cdf3ee7ffd2cbb/FLAG5593fe0ef [2022-01-31 22:53:04,261 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:53:04,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/exp_loop.c [2022-01-31 22:53:04,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60db82d0/965a11b1d3994f38b8cdf3ee7ffd2cbb/FLAG5593fe0ef [2022-01-31 22:53:04,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60db82d0/965a11b1d3994f38b8cdf3ee7ffd2cbb [2022-01-31 22:53:04,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:53:04,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:53:04,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:53:04,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:53:04,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:53:04,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9bd6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04, skipping insertion in model container [2022-01-31 22:53:04,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:53:04,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:53:04,841 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/exp_loop.c[587,600] [2022-01-31 22:53:04,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:53:04,863 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:53:04,894 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/exp_loop.c[587,600] [2022-01-31 22:53:04,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:53:04,920 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:53:04,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04 WrapperNode [2022-01-31 22:53:04,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:53:04,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:53:04,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:53:04,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:53:04,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:53:04,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:53:04,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:53:04,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:53:04,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (1/1) ... [2022-01-31 22:53:04,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:53:04,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:53:04,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 22:53:04,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 22:53:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:53:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:53:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:53:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:53:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 22:53:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure FABS [2022-01-31 22:53:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure FREXP [2022-01-31 22:53:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure LDEXP [2022-01-31 22:53:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:53:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:53:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:53:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:53:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:53:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 22:53:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:53:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:53:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure FABS [2022-01-31 22:53:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure FREXP [2022-01-31 22:53:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure LDEXP [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:53:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:53:05,067 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:53:05,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:53:05,181 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:53:05,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:53:05,187 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 22:53:05,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:53:05 BoogieIcfgContainer [2022-01-31 22:53:05,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:53:05,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:53:05,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:53:05,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:53:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:53:04" (1/3) ... [2022-01-31 22:53:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcdb49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:53:05, skipping insertion in model container [2022-01-31 22:53:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:04" (2/3) ... [2022-01-31 22:53:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcdb49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:53:05, skipping insertion in model container [2022-01-31 22:53:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:53:05" (3/3) ... [2022-01-31 22:53:05,195 INFO L111 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2022-01-31 22:53:05,198 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:53:05,198 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:53:05,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:53:05,238 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 22:53:05,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:53:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 22:53:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 22:53:05,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:05,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:05,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1303587793, now seen corresponding path program 1 times [2022-01-31 22:53:05,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:05,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351848351] [2022-01-31 22:53:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:05,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:05,363 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:53:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 22:53:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:53:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 22:53:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,588 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 22:53:05,590 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351848351] [2022-01-31 22:53:05,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1351848351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:05,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:05,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:53:05,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073284537] [2022-01-31 22:53:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:05,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:53:05,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:53:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:53:05,620 INFO L87 Difference]: Start difference. First operand has 48 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 22:53:05,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:05,728 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2022-01-31 22:53:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:53:05,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-01-31 22:53:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:05,740 INFO L225 Difference]: With dead ends: 87 [2022-01-31 22:53:05,741 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 22:53:05,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:53:05,754 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 68 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:05,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 49 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 22:53:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 22:53:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 22:53:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-31 22:53:05,798 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 37 [2022-01-31 22:53:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:05,799 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-31 22:53:05,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 22:53:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-31 22:53:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 22:53:05,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:05,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:05,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:53:05,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 82615601, now seen corresponding path program 1 times [2022-01-31 22:53:05,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:05,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396542238] [2022-01-31 22:53:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:05,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:05,809 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:53:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 22:53:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:53:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 22:53:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:05,963 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 22:53:05,963 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:05,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396542238] [2022-01-31 22:53:05,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1396542238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:05,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:05,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:53:05,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292304999] [2022-01-31 22:53:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:05,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:53:05,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:53:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:53:05,966 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 22:53:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:06,114 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-01-31 22:53:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:53:06,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2022-01-31 22:53:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:06,121 INFO L225 Difference]: With dead ends: 51 [2022-01-31 22:53:06,121 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 22:53:06,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:53:06,123 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 62 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:06,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 42 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 22:53:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-01-31 22:53:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 22:53:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-01-31 22:53:06,133 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 37 [2022-01-31 22:53:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:06,133 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-01-31 22:53:06,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 22:53:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-01-31 22:53:06,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 22:53:06,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:06,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:06,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:53:06,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:06,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1926603919, now seen corresponding path program 1 times [2022-01-31 22:53:06,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:06,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837317009] [2022-01-31 22:53:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:06,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:06,143 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:53:06,188 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:53:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:53:06,231 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:53:06,232 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:53:06,234 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:53:06,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:53:06,238 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 22:53:06,244 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:53:06,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:53:06 BoogieIcfgContainer [2022-01-31 22:53:06,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:53:06,259 INFO L158 Benchmark]: Toolchain (without parser) took 1564.90ms. Allocated memory was 187.7MB in the beginning and 254.8MB in the end (delta: 67.1MB). Free memory was 131.1MB in the beginning and 161.7MB in the end (delta: -30.5MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. [2022-01-31 22:53:06,260 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:53:06,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.48ms. Allocated memory was 187.7MB in the beginning and 254.8MB in the end (delta: 67.1MB). Free memory was 131.0MB in the beginning and 228.2MB in the end (delta: -97.3MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-01-31 22:53:06,261 INFO L158 Benchmark]: Boogie Preprocessor took 36.42ms. Allocated memory is still 254.8MB. Free memory was 228.2MB in the beginning and 226.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:53:06,261 INFO L158 Benchmark]: RCFGBuilder took 230.20ms. Allocated memory is still 254.8MB. Free memory was 226.7MB in the beginning and 213.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 22:53:06,261 INFO L158 Benchmark]: TraceAbstraction took 1068.87ms. Allocated memory is still 254.8MB. Free memory was 213.0MB in the beginning and 161.7MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-01-31 22:53:06,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.48ms. Allocated memory was 187.7MB in the beginning and 254.8MB in the end (delta: 67.1MB). Free memory was 131.0MB in the beginning and 228.2MB in the end (delta: -97.3MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.42ms. Allocated memory is still 254.8MB. Free memory was 228.2MB in the beginning and 226.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 230.20ms. Allocated memory is still 254.8MB. Free memory was 226.7MB in the beginning and 213.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1068.87ms. Allocated memory is still 254.8MB. Free memory was 213.0MB in the beginning and 161.7MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: 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 80, overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 66. Possible FailurePath: [L71] float a, b, c; [L72] int e; [L74] a = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L12] COND FALSE !(!cond) [L75] RET assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L77] CALL, EXPR FREXP(a, &e) [L25] int x; [L26] float r; [L27] CALL, EXPR FABS(d) [L19] COND TRUE d >= 0.f [L19] return d; [L27] RET, EXPR FABS(d) [L27] float dd = FABS(d); [L29] COND TRUE dd >= 1.f [L30] x = 1 [L31] r = 2.f [L32] COND FALSE !(r <= dd) [L46] *e = x [L47] return dd / r; [L77] RET, EXPR FREXP(a, &e) [L77] b = FREXP(a, &e) [L78] EXPR \read(e) [L78] CALL, EXPR LDEXP(b, e/2) [L52] float x = 1.; [L54] COND TRUE e >= 0 [L55] COND FALSE !(e > 0) [L66] return d * x; [L78] RET, EXPR LDEXP(b, e/2) [L78] c = LDEXP(b, e/2) [L80] CALL __VERIFIER_assert(c >= 0.f && c <= 1e6) [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 87 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 22:53:06,296 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...