/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_2_5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:12:35,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:12:35,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:12:35,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:12:35,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:12:35,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:12:35,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:12:35,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:12:35,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:12:35,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:12:35,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:12:35,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:12:35,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:12:35,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:12:35,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:12:35,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:12:35,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:12:35,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:12:35,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:12:35,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:12:35,377 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 00:12:35,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:12:35,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:12:35,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:12:35,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:12:35,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:12:35,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:12:35,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:12:35,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:12:35,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:12:35,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:12:35,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:12:35,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:12:35,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:12:35,391 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:12:35,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:12:35,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:12:35,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:12:35,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:12:35,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:12:35,582 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:12:35,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_2_5.i [2022-02-01 00:12:35,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd08196d0/7ea5d5b4dc934a0ead00c52de80f4d83/FLAGc55783b7c [2022-02-01 00:12:35,971 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:12:35,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_2_5.i [2022-02-01 00:12:35,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd08196d0/7ea5d5b4dc934a0ead00c52de80f4d83/FLAGc55783b7c [2022-02-01 00:12:36,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd08196d0/7ea5d5b4dc934a0ead00c52de80f4d83 [2022-02-01 00:12:36,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:12:36,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:12:36,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:12:36,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:12:36,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:12:36,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61334888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36, skipping insertion in model container [2022-02-01 00:12:36,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:12:36,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:12:36,557 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_2_5.i[1743,1756] [2022-02-01 00:12:36,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:12:36,564 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:12:36,575 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_2_5.i[1743,1756] [2022-02-01 00:12:36,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:12:36,584 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:12:36,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36 WrapperNode [2022-02-01 00:12:36,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:12:36,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:12:36,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:12:36,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:12:36,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:12:36,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:12:36,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:12:36,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:12:36,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (1/1) ... [2022-02-01 00:12:36,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:12:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:12:36,628 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 00:12:36,648 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 00:12:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:12:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:12:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:12:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:12:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-02-01 00:12:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-02-01 00:12:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:12:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:12:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:12:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-01 00:12:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-01 00:12:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:12:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:12:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:12:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:12:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:12:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:12:36,704 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:12:36,705 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:12:36,819 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:12:36,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:12:36,824 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:12:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:12:36 BoogieIcfgContainer [2022-02-01 00:12:36,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:12:36,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:12:36,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:12:36,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:12:36,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:12:36" (1/3) ... [2022-02-01 00:12:36,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1786664e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:12:36, skipping insertion in model container [2022-02-01 00:12:36,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:36" (2/3) ... [2022-02-01 00:12:36,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1786664e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:12:36, skipping insertion in model container [2022-02-01 00:12:36,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:12:36" (3/3) ... [2022-02-01 00:12:36,854 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2022-02-01 00:12:36,858 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:12:36,858 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:12:36,927 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:12:36,932 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 00:12:36,932 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:12:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-01 00:12:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-01 00:12:36,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:12:36,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 00:12:36,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:12:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:12:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash -761381810, now seen corresponding path program 1 times [2022-02-01 00:12:36,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:12:36,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923966383] [2022-02-01 00:12:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:12:36,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:12:37,026 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:12:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:12:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:12:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-01 00:12:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:12:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-01 00:12:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-01 00:12:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-01 00:12:37,168 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:12:37,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923966383] [2022-02-01 00:12:37,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [923966383] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:12:37,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:12:37,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:12:37,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949083558] [2022-02-01 00:12:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:12:37,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:12:37,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:12:37,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:12:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:12:37,198 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-01 00:12:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:12:37,265 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2022-02-01 00:12:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:12:37,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 31 [2022-02-01 00:12:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:12:37,274 INFO L225 Difference]: With dead ends: 53 [2022-02-01 00:12:37,274 INFO L226 Difference]: Without dead ends: 26 [2022-02-01 00:12:37,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 00:12:37,281 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:12:37,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:12:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-01 00:12:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-01 00:12:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:12:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-02-01 00:12:37,316 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 31 [2022-02-01 00:12:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:12:37,317 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-02-01 00:12:37,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-01 00:12:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-02-01 00:12:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-01 00:12:37,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:12:37,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 00:12:37,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:12:37,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:12:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:12:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1728147152, now seen corresponding path program 1 times [2022-02-01 00:12:37,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:12:37,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445155613] [2022-02-01 00:12:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:12:37,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:12:37,327 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:12:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:12:37,352 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:12:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:12:37,389 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:12:37,389 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:12:37,395 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:12:37,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:12:37,401 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:12:37,404 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:12:37,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:12:37 BoogieIcfgContainer [2022-02-01 00:12:37,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:12:37,418 INFO L158 Benchmark]: Toolchain (without parser) took 1018.21ms. Allocated memory was 180.4MB in the beginning and 217.1MB in the end (delta: 36.7MB). Free memory was 132.0MB in the beginning and 152.6MB in the end (delta: -20.5MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2022-02-01 00:12:37,418 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:12:37,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.85ms. Allocated memory was 180.4MB in the beginning and 217.1MB in the end (delta: 36.7MB). Free memory was 131.8MB in the beginning and 194.9MB in the end (delta: -63.1MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2022-02-01 00:12:37,421 INFO L158 Benchmark]: Boogie Preprocessor took 18.81ms. Allocated memory is still 217.1MB. Free memory was 194.9MB in the beginning and 193.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-01 00:12:37,422 INFO L158 Benchmark]: RCFGBuilder took 220.85ms. Allocated memory is still 217.1MB. Free memory was 193.5MB in the beginning and 183.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-01 00:12:37,423 INFO L158 Benchmark]: TraceAbstraction took 590.86ms. Allocated memory is still 217.1MB. Free memory was 182.3MB in the beginning and 152.6MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-02-01 00:12:37,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.85ms. Allocated memory was 180.4MB in the beginning and 217.1MB in the end (delta: 36.7MB). Free memory was 131.8MB in the beginning and 194.9MB in the end (delta: -63.1MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.81ms. Allocated memory is still 217.1MB. Free memory was 194.9MB in the beginning and 193.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 220.85ms. Allocated memory is still 217.1MB. Free memory was 193.5MB in the beginning and 183.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 590.86ms. Allocated memory is still 217.1MB. Free memory was 182.3MB in the beginning and 152.6MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. 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: 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 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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) [L50] COND TRUE !(x < 0.1) [L51] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 27 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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 00:12:37,454 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...