/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 false -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 0.1.25-177f698 [2020-08-21 13:16:09,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:09,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:09,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:09,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:09,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:09,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:09,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:09,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:09,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:09,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:09,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:09,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:09,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:09,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:09,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:09,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:09,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:09,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:09,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:09,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:09,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:09,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:09,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:09,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:16:09,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:16:09,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:16:09,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:16:09,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:16:09,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 13:16:09,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:09,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:09,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:09,753 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 [2020-08-21 13:16:09,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:09,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:09,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:09,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:09,788 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:09,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:09,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:09,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:09,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:09,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:09,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:09,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:09,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:09,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:09,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:09,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:09,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:09,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:09,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:09,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:09,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:09,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:09,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:09,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:09,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:09,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:09,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:09,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:09,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:09,793 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 -> false [2020-08-21 13:16:10,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:10,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:10,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:10,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:10,104 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:10,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 13:16:10,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/897f442d9/c1fc16394d3c4817956a9c925a107756/FLAGe2bf54570 [2020-08-21 13:16:10,731 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:10,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 13:16:10,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/897f442d9/c1fc16394d3c4817956a9c925a107756/FLAGe2bf54570 [2020-08-21 13:16:11,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/897f442d9/c1fc16394d3c4817956a9c925a107756 [2020-08-21 13:16:11,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:11,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:11,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:11,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:11,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:11,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c49d532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11, skipping insertion in model container [2020-08-21 13:16:11,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:11,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:11,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:11,423 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:11,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:11,504 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:11,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11 WrapperNode [2020-08-21 13:16:11,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:11,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:11,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:11,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:11,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (1/1) ... [2020-08-21 13:16:11,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:11,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:11,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:11,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:11,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (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 [2020-08-21 13:16:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 13:16:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 13:16:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 13:16:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 13:16:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 13:16:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 13:16:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:16:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:16:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:16:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:16:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:16:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:16:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 13:16:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 13:16:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:12,216 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:12,216 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 13:16:12,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:12 BoogieIcfgContainer [2020-08-21 13:16:12,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:12,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:12,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:12,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:12,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:11" (1/3) ... [2020-08-21 13:16:12,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2097e98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:12, skipping insertion in model container [2020-08-21 13:16:12,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:11" (2/3) ... [2020-08-21 13:16:12,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2097e98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:12, skipping insertion in model container [2020-08-21 13:16:12,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:12" (3/3) ... [2020-08-21 13:16:12,231 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 13:16:12,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:12,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:12,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:12,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:12,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:12,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:12,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:12,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:12,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:12,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:12,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 13:16:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 13:16:12,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:12,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:12,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 13:16:12,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:12,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746782897] [2020-08-21 13:16:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:12,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:16:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:12,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746782897] [2020-08-21 13:16:12,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:12,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:12,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313007221] [2020-08-21 13:16:12,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:12,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:12,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:12,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:12,628 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 13:16:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:13,041 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 13:16:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:16:13,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 13:16:13,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:13,059 INFO L225 Difference]: With dead ends: 142 [2020-08-21 13:16:13,059 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 13:16:13,064 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 [2020-08-21 13:16:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 13:16:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 13:16:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 13:16:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 13:16:13,109 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 13:16:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:13,110 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 13:16:13,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 13:16:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 13:16:13,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:13,111 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] [2020-08-21 13:16:13,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:13,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:13,113 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 13:16:13,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:13,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073312966] [2020-08-21 13:16:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:13,182 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:13,182 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:13,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:13,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:13 BoogieIcfgContainer [2020-08-21 13:16:13,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:13,209 INFO L168 Benchmark]: Toolchain (without parser) took 2144.13 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 102.9 MB in the beginning and 194.0 MB in the end (delta: -91.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:13,210 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:16:13,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.84 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.7 MB in the beginning and 177.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:13,212 INFO L168 Benchmark]: Boogie Preprocessor took 63.66 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 174.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:13,213 INFO L168 Benchmark]: RCFGBuilder took 652.68 ms. Allocated memory is still 202.4 MB. Free memory was 174.6 MB in the beginning and 137.6 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:13,214 INFO L168 Benchmark]: TraceAbstraction took 983.05 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 136.9 MB in the beginning and 194.0 MB in the end (delta: -57.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:16:13,218 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 439.84 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.7 MB in the beginning and 177.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.66 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 174.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 652.68 ms. Allocated memory is still 202.4 MB. Free memory was 174.6 MB in the beginning and 137.6 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 983.05 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 136.9 MB in the beginning and 194.0 MB in the end (delta: -57.1 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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...