/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:03:58,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:03:58,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:03:58,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:03:58,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:03:58,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:03:58,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:03:58,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:03:58,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:03:58,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:03:58,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:03:58,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:03:58,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:03:58,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:03:58,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:03:58,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:03:58,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:03:58,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:03:58,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:03:58,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:03:58,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:03:58,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:03:58,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:03:58,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:03:58,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:03:58,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:03:58,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:03:58,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:03:58,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:03:58,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:03:58,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:03:58,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:03:58,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:03:58,952 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:03:58,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:03:58,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:03:58,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:03:58,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:03:58,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:03:58,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:03:58,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:03:58,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:03:58,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:03:58,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:03:58,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:03:58,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:03:58,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:03:58,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:03:58,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:03:58,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:03:58,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:03:58,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:03:58,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:03:58,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:03:58,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:03:58,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:03:58,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:03:58,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:03:58,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:03:59,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:03:59,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:03:59,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:03:59,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:03:59,264 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:03:59,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-18 21:03:59,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddce6f35/9cda111323434bba9030edeefb1f9122/FLAGd44615c90 [2020-08-18 21:03:59,839 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:03:59,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-18 21:03:59,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddce6f35/9cda111323434bba9030edeefb1f9122/FLAGd44615c90 [2020-08-18 21:04:00,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddce6f35/9cda111323434bba9030edeefb1f9122 [2020-08-18 21:04:00,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:04:00,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:04:00,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:04:00,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:04:00,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:04:00,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b36a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00, skipping insertion in model container [2020-08-18 21:04:00,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:04:00,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:04:00,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:04:00,443 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:04:00,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:04:00,617 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:04:00,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00 WrapperNode [2020-08-18 21:04:00,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:04:00,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:04:00,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:04:00,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:04:00,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... [2020-08-18 21:04:00,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:04:00,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:04:00,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:04:00,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:04:00,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:04:00,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:04:00,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:04:00,729 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-18 21:04:00,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-18 21:04:00,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:04:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:04:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 21:04:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-18 21:04:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:04:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 21:04:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:04:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:04:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 21:04:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:04:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-18 21:04:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:04:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:04:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 21:04:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:04:01,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:04:01,243 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 21:04:01,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:04:01 BoogieIcfgContainer [2020-08-18 21:04:01,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:04:01,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:04:01,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:04:01,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:04:01,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:04:00" (1/3) ... [2020-08-18 21:04:01,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee115a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:04:01, skipping insertion in model container [2020-08-18 21:04:01,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:04:00" (2/3) ... [2020-08-18 21:04:01,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee115a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:04:01, skipping insertion in model container [2020-08-18 21:04:01,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:04:01" (3/3) ... [2020-08-18 21:04:01,265 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-18 21:04:01,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:04:01,286 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:04:01,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:04:01,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:04:01,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:04:01,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:04:01,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:04:01,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:04:01,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:04:01,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:04:01,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:04:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-18 21:04:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:04:01,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:04:01,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:04:01,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:04:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:04:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-18 21:04:01,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:04:01,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953048050] [2020-08-18 21:04:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:04:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:04:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:04:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:04:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:04:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:04:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:04:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:04:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:04:01,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953048050] [2020-08-18 21:04:01,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:04:01,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:04:01,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382015164] [2020-08-18 21:04:01,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:04:01,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:04:01,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:04:01,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:04:01,689 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-18 21:04:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:04:01,990 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-18 21:04:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:04:01,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 21:04:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:04:02,003 INFO L225 Difference]: With dead ends: 112 [2020-08-18 21:04:02,004 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 21:04:02,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:04:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 21:04:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-18 21:04:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 21:04:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-18 21:04:02,058 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-18 21:04:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:04:02,059 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-18 21:04:02,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:04:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-18 21:04:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:04:02,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:04:02,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:04:02,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:04:02,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:04:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:04:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-18 21:04:02,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:04:02,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906274157] [2020-08-18 21:04:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:04:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:04:02,164 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:04:02,164 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:04:02,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:04:02,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:04:02 BoogieIcfgContainer [2020-08-18 21:04:02,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:04:02,212 INFO L168 Benchmark]: Toolchain (without parser) took 2033.53 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 96.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:04:02,219 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:04:02,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.26 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 181.1 MB in the end (delta: -77.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:04:02,223 INFO L168 Benchmark]: Boogie Preprocessor took 50.81 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 179.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:04:02,224 INFO L168 Benchmark]: RCFGBuilder took 583.93 ms. Allocated memory is still 204.5 MB. Free memory was 178.4 MB in the beginning and 150.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:04:02,226 INFO L168 Benchmark]: TraceAbstraction took 953.98 ms. Allocated memory is still 204.5 MB. Free memory was 149.8 MB in the beginning and 96.2 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:04:02,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.26 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 181.1 MB in the end (delta: -77.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.81 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 179.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 583.93 ms. Allocated memory is still 204.5 MB. Free memory was 178.4 MB in the beginning and 150.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 953.98 ms. Allocated memory is still 204.5 MB. Free memory was 149.8 MB in the beginning and 96.2 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 Received shutdown request...