/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 -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 0.1.25-72570d3 [2020-08-22 16:17:13,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:13,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:14,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:14,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:14,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:14,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:14,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:14,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:14,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:14,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:14,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:14,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:14,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:14,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:14,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:14,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:14,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:14,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:14,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:14,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:14,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:14,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:14,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:14,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:14,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:14,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:14,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:14,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:17:14,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:14,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:14,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:14,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:14,141 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:14,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:14,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:14,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:14,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:14,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:14,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:14,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:14,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:14,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:14,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:14,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:14,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:14,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:14,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:14,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:14,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:14,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:14,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:14,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:14,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:14,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:14,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:14,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:14,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:14,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:14,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:14,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:14,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:14,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:14,488 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:14,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 16:17:14,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2226bb3e/6526e20ba5ef41819a620c1a8449e1a0/FLAG6f7c29d64 [2020-08-22 16:17:15,046 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:15,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 16:17:15,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2226bb3e/6526e20ba5ef41819a620c1a8449e1a0/FLAG6f7c29d64 [2020-08-22 16:17:15,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2226bb3e/6526e20ba5ef41819a620c1a8449e1a0 [2020-08-22 16:17:15,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:15,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:15,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:15,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:15,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:15,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:15,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d12e748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15, skipping insertion in model container [2020-08-22 16:17:15,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:15,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:15,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:15,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:15,908 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:15,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:15,993 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:15,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15 WrapperNode [2020-08-22 16:17:15,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:15,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:15,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:15,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:16,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... [2020-08-22 16:17:16,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:16,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:16,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:16,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:16,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:17:16,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:16,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:16,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 16:17:16,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 16:17:16,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 16:17:16,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 16:17:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 16:17:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 16:17:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 16:17:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 16:17:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:16,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:16,712 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 16:17:16,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:16 BoogieIcfgContainer [2020-08-22 16:17:16,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:16,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:16,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:16,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:16,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:15" (1/3) ... [2020-08-22 16:17:16,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6a28a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:16, skipping insertion in model container [2020-08-22 16:17:16,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:15" (2/3) ... [2020-08-22 16:17:16,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6a28a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:16, skipping insertion in model container [2020-08-22 16:17:16,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:16" (3/3) ... [2020-08-22 16:17:16,726 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-22 16:17:16,735 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:16,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:16,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:16,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:16,778 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:16,778 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:16,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:16,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:16,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:16,779 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:16,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 16:17:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:17:16,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:16,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:16,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-22 16:17:16,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:16,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075075495] [2020-08-22 16:17:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:17:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:17,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075075495] [2020-08-22 16:17:17,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:17,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:17,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71280005] [2020-08-22 16:17:17,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:17,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:17,088 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 16:17:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:17,429 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-22 16:17:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:17:17,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 16:17:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:17,443 INFO L225 Difference]: With dead ends: 142 [2020-08-22 16:17:17,444 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 16:17:17,448 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 [2020-08-22 16:17:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 16:17:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 16:17:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 16:17:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-22 16:17:17,502 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-22 16:17:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:17,502 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-22 16:17:17,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-22 16:17:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 16:17:17,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:17,504 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] [2020-08-22 16:17:17,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:17,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:17,505 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-22 16:17:17,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:17,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438083620] [2020-08-22 16:17:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:17,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:17,686 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:17,722 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:17,722 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:17,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:17,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:17 BoogieIcfgContainer [2020-08-22 16:17:17,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:17,761 INFO L168 Benchmark]: Toolchain (without parser) took 2348.74 ms. Allocated memory was 148.4 MB in the beginning and 232.8 MB in the end (delta: 84.4 MB). Free memory was 104.4 MB in the beginning and 183.1 MB in the end (delta: -78.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:17,762 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:17,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.17 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.0 MB in the beginning and 178.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:17,764 INFO L168 Benchmark]: Boogie Preprocessor took 69.14 ms. Allocated memory is still 204.5 MB. Free memory was 178.7 MB in the beginning and 175.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:17,765 INFO L168 Benchmark]: RCFGBuilder took 653.59 ms. Allocated memory is still 204.5 MB. Free memory was 175.5 MB in the beginning and 139.4 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:17,766 INFO L168 Benchmark]: TraceAbstraction took 1039.92 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 138.8 MB in the beginning and 183.1 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:17:17,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.17 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.0 MB in the beginning and 178.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.14 ms. Allocated memory is still 204.5 MB. Free memory was 178.7 MB in the beginning and 175.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 653.59 ms. Allocated memory is still 204.5 MB. Free memory was 175.5 MB in the beginning and 139.4 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1039.92 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 138.8 MB in the beginning and 183.1 MB in the end (delta: -44.3 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, }; VAL [\old(one_fmod)=8589934605, \old(Zero_fmod)=8589934600, \old(Zero_fmod)=8589934594, one_fmod=1, Zero_fmod={3:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=8589934601, Zero_fmod={3:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=8589934601, one_fmod=1, Zero_fmod={3:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=8589934601, one_fmod=1, x=0, y=8589934601, Zero_fmod={3:0}] [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 VAL [\old(x)=0, \old(y)=8589934601, lx=8589934593, ly=8589934603, one_fmod=1, sx=-1, x=0, y=8589934601, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934601, hx=2146435072, lx=8589934593, ly=8589934603, one_fmod=1, sx=-1, x=0, y=8589934601, Zero_fmod={3:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8589934592, one_fmod=1, x=0, y=8589934601, Zero_fmod={3:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934592, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934601, Zero_fmod={3:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=8589934592, x=0, y=8589934601, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, 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, 0.1s 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, 0.1s 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...