/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:43:15,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:43:15,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:43:15,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:43:15,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:43:15,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:43:15,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:43:15,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:43:15,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:43:15,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:43:15,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:43:15,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:43:15,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:43:15,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:43:15,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:43:15,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:43:15,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:43:15,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:43:15,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:43:15,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:43:15,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:43:15,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:43:15,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:43:15,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:43:15,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:43:15,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:43:15,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:43:15,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:43:15,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:43:16,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 02:43:16,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:43:16,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:43:16,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:43:16,011 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 [2020-08-19 02:43:16,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:43:16,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:43:16,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:43:16,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:43:16,051 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:43:16,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:43:16,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:43:16,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:43:16,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:43:16,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:43:16,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:43:16,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:43:16,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:43:16,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:43:16,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:43:16,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:43:16,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:43:16,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:43:16,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:43:16,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:43:16,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:43:16,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:43:16,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:43:16,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:43:16,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:43:16,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:43:16,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:43:16,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:43:16,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:43:16,058 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:43:16,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:43:16,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:43:16,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:43:16,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:43:16,367 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:43:16,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-19 02:43:16,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a677785e2/f7768c6128c94bfdad3cf156b255aca6/FLAG60bf5cfc3 [2020-08-19 02:43:16,930 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:43:16,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-19 02:43:16,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a677785e2/f7768c6128c94bfdad3cf156b255aca6/FLAG60bf5cfc3 [2020-08-19 02:43:17,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a677785e2/f7768c6128c94bfdad3cf156b255aca6 [2020-08-19 02:43:17,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:43:17,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:43:17,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:17,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:43:17,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:43:17,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c640345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17, skipping insertion in model container [2020-08-19 02:43:17,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:43:17,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:43:17,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:17,626 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:43:17,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:17,793 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:43:17,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17 WrapperNode [2020-08-19 02:43:17,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:17,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:43:17,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:43:17,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:43:17,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (1/1) ... [2020-08-19 02:43:17,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:43:17,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:43:17,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:43:17,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:43:17,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (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 [2020-08-19 02:43:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:43:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:43:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 02:43:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 02:43:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 02:43:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:43:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:43:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 02:43:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 02:43:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 02:43:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:43:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 02:43:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:43:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:43:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 02:43:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:43:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 02:43:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:43:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:43:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 02:43:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:43:18,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:43:18,452 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 02:43:18,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:18 BoogieIcfgContainer [2020-08-19 02:43:18,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:43:18,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:43:18,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:43:18,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:43:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:43:17" (1/3) ... [2020-08-19 02:43:18,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fe28ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:18, skipping insertion in model container [2020-08-19 02:43:18,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:17" (2/3) ... [2020-08-19 02:43:18,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fe28ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:18, skipping insertion in model container [2020-08-19 02:43:18,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:18" (3/3) ... [2020-08-19 02:43:18,466 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-19 02:43:18,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:43:18,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:43:18,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:43:18,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:43:18,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:43:18,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:43:18,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:43:18,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:43:18,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:43:18,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:43:18,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:43:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-19 02:43:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:43:18,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:18,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:18,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:18,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-19 02:43:18,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:18,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770998949] [2020-08-19 02:43:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:18,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:43:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:43:18,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770998949] [2020-08-19 02:43:18,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:43:18,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:43:18,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627658690] [2020-08-19 02:43:18,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:43:18,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:18,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:43:18,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:43:18,835 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-19 02:43:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:19,171 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-19 02:43:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:43:19,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 02:43:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:19,184 INFO L225 Difference]: With dead ends: 142 [2020-08-19 02:43:19,185 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 02:43:19,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:43:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 02:43:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 02:43:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 02:43:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-19 02:43:19,240 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-19 02:43:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:19,240 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-19 02:43:19,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:43:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-19 02:43:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:43:19,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:19,242 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] [2020-08-19 02:43:19,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:43:19,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-19 02:43:19,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:19,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261071863] [2020-08-19 02:43:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:43:19,309 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:43:19,309 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:43:19,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:43:19,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:43:19 BoogieIcfgContainer [2020-08-19 02:43:19,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:43:19,339 INFO L168 Benchmark]: Toolchain (without parser) took 2040.36 ms. Allocated memory was 141.6 MB in the beginning and 232.8 MB in the end (delta: 91.2 MB). Free memory was 104.4 MB in the beginning and 187.0 MB in the end (delta: -82.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:19,340 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:43:19,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.79 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 104.2 MB in the beginning and 178.4 MB in the end (delta: -74.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:19,343 INFO L168 Benchmark]: Boogie Preprocessor took 62.82 ms. Allocated memory is still 202.9 MB. Free memory was 178.4 MB in the beginning and 175.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:19,343 INFO L168 Benchmark]: RCFGBuilder took 599.87 ms. Allocated memory is still 202.9 MB. Free memory was 175.2 MB in the beginning and 139.2 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:19,344 INFO L168 Benchmark]: TraceAbstraction took 878.08 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 138.6 MB in the beginning and 187.0 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:43:19,349 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 494.79 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 104.2 MB in the beginning and 178.4 MB in the end (delta: -74.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.82 ms. Allocated memory is still 202.9 MB. Free memory was 178.4 MB in the beginning and 175.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 599.87 ms. Allocated memory is still 202.9 MB. Free memory was 175.2 MB in the beginning and 139.2 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 878.08 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 138.6 MB in the beginning and 187.0 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...