/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/inv_Newton-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:54:07,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:54:07,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:54:07,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:54:07,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:54:07,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:54:07,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:54:07,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:54:07,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:54:07,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:54:07,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:54:07,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:54:07,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:54:07,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:54:07,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:54:07,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:54:07,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:54:07,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:54:07,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:54:07,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:54:07,953 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 22:54:07,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:54:07,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:54:07,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:54:07,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:54:07,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:54:07,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:54:07,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:54:07,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:54:07,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:54:07,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:54:07,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:54:07,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:54:07,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:54:07,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:54:07,963 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:54:07,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:54:08,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:54:08,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:54:08,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:54:08,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:54:08,146 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:54:08,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_Newton-1.c [2022-01-31 22:54:08,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82dfa84ea/bdcb79f0f27b43ccb196b65edd64c232/FLAG300bb48fd [2022-01-31 22:54:08,476 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:54:08,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_Newton-1.c [2022-01-31 22:54:08,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82dfa84ea/bdcb79f0f27b43ccb196b65edd64c232/FLAG300bb48fd [2022-01-31 22:54:08,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82dfa84ea/bdcb79f0f27b43ccb196b65edd64c232 [2022-01-31 22:54:08,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:54:08,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:54:08,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:54:08,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:54:08,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:54:08,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:54:08" (1/1) ... [2022-01-31 22:54:08,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a18285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:08, skipping insertion in model container [2022-01-31 22:54:08,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:54:08" (1/1) ... [2022-01-31 22:54:08,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:54:08,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:54:09,034 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/inv_Newton-1.c[598,611] [2022-01-31 22:54:09,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:54:09,062 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:54:09,069 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/inv_Newton-1.c[598,611] [2022-01-31 22:54:09,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:54:09,087 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:54:09,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09 WrapperNode [2022-01-31 22:54:09,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:54:09,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:54:09,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:54:09,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:54:09,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:54:09,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:54:09,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:54:09,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:54:09,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (1/1) ... [2022-01-31 22:54:09,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:54:09,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:54:09,131 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 22:54:09,199 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 22:54:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:54:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:54:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:54:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:54:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 22:54:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2022-01-31 22:54:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:54:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:54:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:54:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:54:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:54:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 22:54:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:54:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:54:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2022-01-31 22:54:09,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:54:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 22:54:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:54:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:54:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 22:54:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:54:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:54:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:54:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:54:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:54:09,287 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:54:09,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:54:09,374 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:54:09,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:54:09,378 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 22:54:09,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:54:09 BoogieIcfgContainer [2022-01-31 22:54:09,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:54:09,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:54:09,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:54:09,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:54:09,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:54:08" (1/3) ... [2022-01-31 22:54:09,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e44e1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:54:09, skipping insertion in model container [2022-01-31 22:54:09,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:09" (2/3) ... [2022-01-31 22:54:09,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e44e1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:54:09, skipping insertion in model container [2022-01-31 22:54:09,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:54:09" (3/3) ... [2022-01-31 22:54:09,384 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2022-01-31 22:54:09,387 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:54:09,387 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:54:09,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:54:09,416 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 22:54:09,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:54:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 22:54:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 22:54:09,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:09,429 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] [2022-01-31 22:54:09,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -744784673, now seen corresponding path program 1 times [2022-01-31 22:54:09,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901172165] [2022-01-31 22:54:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:09,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:09,509 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:54:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 22:54:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,668 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 22:54:09,669 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901172165] [2022-01-31 22:54:09,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1901172165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:09,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:09,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:54:09,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309806219] [2022-01-31 22:54:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:54:09,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:54:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:54:09,700 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 22:54:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:09,771 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-01-31 22:54:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:54:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-31 22:54:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:09,776 INFO L225 Difference]: With dead ends: 51 [2022-01-31 22:54:09,776 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 22:54:09,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 22:54:09,781 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:09,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 27 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:54:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 22:54:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-31 22:54:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 22:54:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-01-31 22:54:09,821 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2022-01-31 22:54:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:09,822 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-01-31 22:54:09,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 22:54:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-01-31 22:54:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 22:54:09,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:09,826 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] [2022-01-31 22:54:09,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:54:09,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:09,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:09,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1755901923, now seen corresponding path program 1 times [2022-01-31 22:54:09,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:09,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189264567] [2022-01-31 22:54:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:09,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:09,832 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:54:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 22:54:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:09,989 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 22:54:09,989 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189264567] [2022-01-31 22:54:09,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [189264567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:09,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:09,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:54:09,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169057089] [2022-01-31 22:54:09,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:09,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:54:09,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:09,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:54:09,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:54:09,991 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 22:54:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:10,069 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-01-31 22:54:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:54:10,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-01-31 22:54:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:10,070 INFO L225 Difference]: With dead ends: 33 [2022-01-31 22:54:10,070 INFO L226 Difference]: Without dead ends: 24 [2022-01-31 22:54:10,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:54:10,074 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:10,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-31 22:54:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-31 22:54:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 22:54:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-01-31 22:54:10,080 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2022-01-31 22:54:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:10,080 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-01-31 22:54:10,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 22:54:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-01-31 22:54:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 22:54:10,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:10,081 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] [2022-01-31 22:54:10,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:54:10,081 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2002700021, now seen corresponding path program 1 times [2022-01-31 22:54:10,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:10,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93821725] [2022-01-31 22:54:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:10,104 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:10,105 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:10,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:10,108 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:54:10,162 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:54:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:54:10,198 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:54:10,199 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:54:10,201 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:54:10,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:54:10,206 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 22:54:10,208 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:54:10,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:54:10 BoogieIcfgContainer [2022-01-31 22:54:10,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:54:10,224 INFO L158 Benchmark]: Toolchain (without parser) took 1312.08ms. Allocated memory was 172.0MB in the beginning and 223.3MB in the end (delta: 51.4MB). Free memory was 118.3MB in the beginning and 128.9MB in the end (delta: -10.7MB). Peak memory consumption was 40.3MB. Max. memory is 8.0GB. [2022-01-31 22:54:10,224 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:54:10,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.92ms. Allocated memory was 172.0MB in the beginning and 223.3MB in the end (delta: 51.4MB). Free memory was 118.1MB in the beginning and 196.1MB in the end (delta: -78.1MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-01-31 22:54:10,226 INFO L158 Benchmark]: Boogie Preprocessor took 20.21ms. Allocated memory is still 223.3MB. Free memory was 196.1MB in the beginning and 194.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:54:10,230 INFO L158 Benchmark]: RCFGBuilder took 270.37ms. Allocated memory is still 223.3MB. Free memory was 194.5MB in the beginning and 182.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 22:54:10,230 INFO L158 Benchmark]: TraceAbstraction took 842.80ms. Allocated memory is still 223.3MB. Free memory was 181.9MB in the beginning and 128.9MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2022-01-31 22:54:10,232 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 172.0MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.92ms. Allocated memory was 172.0MB in the beginning and 223.3MB in the end (delta: 51.4MB). Free memory was 118.1MB in the beginning and 196.1MB in the end (delta: -78.1MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.21ms. Allocated memory is still 223.3MB. Free memory was 196.1MB in the beginning and 194.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 270.37ms. Allocated memory is still 223.3MB. Free memory was 194.5MB in the beginning and 182.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 842.80ms. Allocated memory is still 223.3MB. Free memory was 181.9MB in the beginning and 128.9MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(a >= 20. && a <= 30.) [L14] COND FALSE !(!cond) [L49] RET assume_abort_if_not(a >= 20. && a <= 30.) [L51] CALL, EXPR inv(a) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] RET, EXPR inv(a) [L51] r = inv(a) [L53] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) [L16] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 43 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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 22:54:10,259 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...