/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-newlib/float_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:02:39,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:02:39,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:02:39,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:02:39,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:02:39,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:02:39,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:02:39,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:02:39,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:02:39,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:02:39,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:02:39,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:02:39,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:02:39,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:02:39,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:02:39,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:02:39,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:02:39,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:02:39,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:02:39,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:02:39,797 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 23:02:39,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:02:39,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:02:39,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:02:39,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:02:39,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:02:39,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:02:39,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:02:39,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:02:39,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:02:39,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:02:39,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:02:39,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:02:39,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:02:39,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:02:39,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:02:39,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:02:39,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:02:39,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:02:39,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:39,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:02:39,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:02:39,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:02:39,809 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:02:39,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:02:39,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:02:40,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:02:40,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:02:40,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:02:40,025 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:02:40,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2022-01-31 23:02:40,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6bcd1382/2a2ec426d662420eafc8ca33330ed04f/FLAGd6e7e9ef7 [2022-01-31 23:02:40,455 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:02:40,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2022-01-31 23:02:40,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6bcd1382/2a2ec426d662420eafc8ca33330ed04f/FLAGd6e7e9ef7 [2022-01-31 23:02:40,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6bcd1382/2a2ec426d662420eafc8ca33330ed04f [2022-01-31 23:02:40,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:02:40,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:02:40,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:40,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:02:40,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:02:40,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7234c9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40, skipping insertion in model container [2022-01-31 23:02:40,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:02:40,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:02:40,645 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-newlib/float_req_bl_1122b.c[2726,2739] [2022-01-31 23:02:40,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:40,652 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:02:40,680 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-newlib/float_req_bl_1122b.c[2726,2739] [2022-01-31 23:02:40,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:40,690 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:02:40,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40 WrapperNode [2022-01-31 23:02:40,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:40,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:02:40,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:02:40,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:02:40,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:02:40,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:02:40,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:02:40,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:02:40,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (1/1) ... [2022-01-31 23:02:40,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:40,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:02:40,767 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 23:02:40,772 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 23:02:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:02:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:02:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:02:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-01-31 23:02:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-01-31 23:02:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:02:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:02:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:02:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:02:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:02:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:02:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-01-31 23:02:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:02:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:02:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:02:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:02:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:02:40,867 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:02:40,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:02:41,071 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:02:41,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:02:41,076 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-31 23:02:41,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:41 BoogieIcfgContainer [2022-01-31 23:02:41,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:02:41,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:02:41,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:02:41,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:02:41,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:02:40" (1/3) ... [2022-01-31 23:02:41,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f93305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:41, skipping insertion in model container [2022-01-31 23:02:41,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:40" (2/3) ... [2022-01-31 23:02:41,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f93305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:41, skipping insertion in model container [2022-01-31 23:02:41,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:41" (3/3) ... [2022-01-31 23:02:41,083 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2022-01-31 23:02:41,087 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:02:41,087 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:02:41,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:02:41,134 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 23:02:41,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:02:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:02:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 23:02:41,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:41,166 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 23:02:41,167 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:41,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2041896525, now seen corresponding path program 1 times [2022-01-31 23:02:41,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:41,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486866250] [2022-01-31 23:02:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:41,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:41,231 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 23:02:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:41,402 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 23:02:41,403 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486866250] [2022-01-31 23:02:41,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [486866250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:41,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:41,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:02:41,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298378421] [2022-01-31 23:02:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:41,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:02:41,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:02:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:02:41,440 INFO L87 Difference]: Start difference. First operand has 55 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 23:02:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:41,624 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2022-01-31 23:02:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:02:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 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 23:02:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:41,637 INFO L225 Difference]: With dead ends: 102 [2022-01-31 23:02:41,638 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 23:02:41,640 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 23:02:41,643 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 63 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:41,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 65 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 23:02:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-31 23:02:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:02:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2022-01-31 23:02:41,679 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2022-01-31 23:02:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:41,680 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2022-01-31 23:02:41,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 23:02:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2022-01-31 23:02:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 23:02:41,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:41,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:41,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:02:41,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 422514410, now seen corresponding path program 1 times [2022-01-31 23:02:41,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860844601] [2022-01-31 23:02:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:41,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:41,688 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:41,733 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:02:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:41,790 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:02:41,791 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:02:41,793 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:02:41,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:02:41,796 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:02:41,797 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:02:41,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:02:41 BoogieIcfgContainer [2022-01-31 23:02:41,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:02:41,811 INFO L158 Benchmark]: Toolchain (without parser) took 1334.19ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 132.9MB in the beginning and 132.0MB in the end (delta: 933.6kB). Peak memory consumption was 36.8MB. Max. memory is 8.0GB. [2022-01-31 23:02:41,812 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:41,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.18ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 132.6MB in the beginning and 194.3MB in the end (delta: -61.7MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-01-31 23:02:41,816 INFO L158 Benchmark]: Boogie Preprocessor took 28.78ms. Allocated memory is still 222.3MB. Free memory was 194.3MB in the beginning and 192.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:02:41,817 INFO L158 Benchmark]: RCFGBuilder took 356.87ms. Allocated memory is still 222.3MB. Free memory was 192.2MB in the beginning and 176.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-31 23:02:41,817 INFO L158 Benchmark]: TraceAbstraction took 731.46ms. Allocated memory is still 222.3MB. Free memory was 175.5MB in the beginning and 132.0MB in the end (delta: 43.5MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:41,823 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 184.5MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.18ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 132.6MB in the beginning and 194.3MB in the end (delta: -61.7MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.78ms. Allocated memory is still 222.3MB. Free memory was 194.3MB in the beginning and 192.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 356.87ms. Allocated memory is still 222.3MB. Free memory was 192.2MB in the beginning and 176.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 731.46ms. Allocated memory is still 222.3MB. Free memory was 175.5MB in the beginning and 132.0MB in the end (delta: 43.5MB). Peak memory consumption was 43.0MB. 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: 125]: 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L119] float x = -1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L121] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, 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, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 63 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 5, 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 [2022-01-31 23:02:41,848 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...