/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/floats-cdfpl/newton_3_8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:12:59,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:12:59,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:12:59,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:12:59,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:12:59,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:12:59,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:12:59,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:12:59,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:12:59,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:12:59,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:12:59,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:12:59,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:12:59,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:12:59,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:12:59,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:12:59,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:12:59,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:12:59,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:12:59,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:12:59,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:12:59,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:12:59,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:12:59,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:12:59,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-01 00:12:59,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-01 00:12:59,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-01 00:12:59,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-01 00:12:59,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-01 00:12:59,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-01 00:12:59,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-01 00:12:59,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-01 00:12:59,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-01 00:12:59,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-01 00:12:59,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-01 00:12:59,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-01 00:12:59,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-01 00:12:59,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-01 00:12:59,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:12:59,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:12:59,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:12:59,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:12:59,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:12:59,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:12:59,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:12:59,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:12:59,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:12:59,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:12:59,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:12:59,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:12:59,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:12:59,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:12:59,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:12:59,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:12:59,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:12:59,851 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:12:59,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:13:00,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:13:00,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:13:00,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:13:00,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:13:00,101 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:13:00,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_3_8.i [2022-02-01 00:13:00,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d1109ac/58dc9d6983cd4c34bde6e5ed044dcb02/FLAG4b71d4635 [2022-02-01 00:13:00,538 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:13:00,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_3_8.i [2022-02-01 00:13:00,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d1109ac/58dc9d6983cd4c34bde6e5ed044dcb02/FLAG4b71d4635 [2022-02-01 00:13:00,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d1109ac/58dc9d6983cd4c34bde6e5ed044dcb02 [2022-02-01 00:13:00,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:13:00,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:13:00,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:13:00,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:13:00,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:13:00,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38941877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00, skipping insertion in model container [2022-02-01 00:13:00,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:13:00,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:13:00,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_3_8.i[1764,1777] [2022-02-01 00:13:00,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:13:00,775 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:13:00,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_3_8.i[1764,1777] [2022-02-01 00:13:00,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:13:00,807 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:13:00,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00 WrapperNode [2022-02-01 00:13:00,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:13:00,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:13:00,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:13:00,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:13:00,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:13:00,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:13:00,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:13:00,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:13:00,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (1/1) ... [2022-02-01 00:13:00,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:13:00,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:13:00,867 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) [2022-02-01 00:13:00,885 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 [2022-02-01 00:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-02-01 00:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-02-01 00:13:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:13:00,942 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:13:00,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:13:01,016 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:13:01,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:13:01,020 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:13:01,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:13:01 BoogieIcfgContainer [2022-02-01 00:13:01,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:13:01,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:13:01,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:13:01,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:13:01,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:13:00" (1/3) ... [2022-02-01 00:13:01,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6985a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:13:01, skipping insertion in model container [2022-02-01 00:13:01,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:13:00" (2/3) ... [2022-02-01 00:13:01,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6985a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:13:01, skipping insertion in model container [2022-02-01 00:13:01,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:13:01" (3/3) ... [2022-02-01 00:13:01,026 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2022-02-01 00:13:01,029 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:13:01,029 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:13:01,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:13:01,061 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=QVASR [2022-02-01 00:13:01,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:13:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-01 00:13:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-01 00:13:01,077 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:13:01,077 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-02-01 00:13:01,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:13:01,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:13:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1571588004, now seen corresponding path program 1 times [2022-02-01 00:13:01,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:13:01,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437898943] [2022-02-01 00:13:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:13:01,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:13:01,128 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:13:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:13:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:13:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-01 00:13:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:13:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-01 00:13:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-01 00:13:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-01 00:13:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-01 00:13:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:13:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-01 00:13:01,295 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:13:01,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437898943] [2022-02-01 00:13:01,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [437898943] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:13:01,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:13:01,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:13:01,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464185895] [2022-02-01 00:13:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:13:01,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:13:01,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:13:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:13:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:13:01,326 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-01 00:13:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:13:01,405 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-02-01 00:13:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:13:01,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2022-02-01 00:13:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:13:01,412 INFO L225 Difference]: With dead ends: 59 [2022-02-01 00:13:01,412 INFO L226 Difference]: Without dead ends: 29 [2022-02-01 00:13:01,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:13:01,418 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:13:01,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:13:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-01 00:13:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-01 00:13:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-01 00:13:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-01 00:13:01,451 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 40 [2022-02-01 00:13:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:13:01,451 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-01 00:13:01,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-01 00:13:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-01 00:13:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-01 00:13:01,454 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:13:01,454 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-02-01 00:13:01,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:13:01,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:13:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:13:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1846347618, now seen corresponding path program 1 times [2022-02-01 00:13:01,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:13:01,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435288453] [2022-02-01 00:13:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:13:01,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:13:01,464 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:13:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:13:01,495 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:13:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:13:01,528 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:13:01,528 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:13:01,531 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:13:01,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:13:01,536 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:13:01,538 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:13:01,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:13:01 BoogieIcfgContainer [2022-02-01 00:13:01,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:13:01,552 INFO L158 Benchmark]: Toolchain (without parser) took 985.14ms. Allocated memory is still 164.6MB. Free memory was 112.9MB in the beginning and 93.6MB in the end (delta: 19.2MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. [2022-02-01 00:13:01,552 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:13:01,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.63ms. Allocated memory is still 164.6MB. Free memory was 112.7MB in the beginning and 137.7MB in the end (delta: -25.0MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2022-02-01 00:13:01,554 INFO L158 Benchmark]: Boogie Preprocessor took 33.79ms. Allocated memory is still 164.6MB. Free memory was 137.7MB in the beginning and 136.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:13:01,555 INFO L158 Benchmark]: RCFGBuilder took 177.47ms. Allocated memory is still 164.6MB. Free memory was 136.2MB in the beginning and 125.8MB in the end (delta: 10.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-01 00:13:01,556 INFO L158 Benchmark]: TraceAbstraction took 529.27ms. Allocated memory is still 164.6MB. Free memory was 125.4MB in the beginning and 93.6MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-02-01 00:13:01,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.63ms. Allocated memory is still 164.6MB. Free memory was 112.7MB in the beginning and 137.7MB in the end (delta: -25.0MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.79ms. Allocated memory is still 164.6MB. Free memory was 137.7MB in the beginning and 136.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 177.47ms. Allocated memory is still 164.6MB. Free memory was 136.2MB in the beginning and 125.8MB in the end (delta: 10.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 529.27ms. Allocated memory is still 164.6MB. Free memory was 125.4MB in the beginning and 93.6MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. 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: 51]: 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 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) [L44] CALL, EXPR fp(x) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) [L46] CALL, EXPR fp(x) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) [L51] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 30 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: 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 [2022-02-01 00:13:01,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...