/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:11,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:11,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:11,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:11,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:11,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:11,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:11,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:11,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:11,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:11,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:11,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:11,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:11,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:11,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:11,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:11,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:11,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:11,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:11,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:11,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:11,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:11,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:11,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:11,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:54:11,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:54:11,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:54:11,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:54:11,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:54:11,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 14:54:11,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:11,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:11,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:11,689 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 [2020-09-24 14:54:11,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:11,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:11,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:11,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:11,757 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:11,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:11,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:11,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:11,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:11,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:11,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:11,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:11,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:11,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:11,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:11,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:11,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:11,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:11,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:11,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:11,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:11,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:11,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:11,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:11,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:11,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:11,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:11,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:11,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:11,764 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:54:12,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:12,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:12,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:12,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:12,217 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:12,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-24 14:54:12,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33e77cbce/81b414f6bfb44a8c95392e6553e60e17/FLAGbffdc2048 [2020-09-24 14:54:12,840 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:12,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-24 14:54:12,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33e77cbce/81b414f6bfb44a8c95392e6553e60e17/FLAGbffdc2048 [2020-09-24 14:54:13,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33e77cbce/81b414f6bfb44a8c95392e6553e60e17 [2020-09-24 14:54:13,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:13,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:13,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:13,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:13,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:13,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622d9ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13, skipping insertion in model container [2020-09-24 14:54:13,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:13,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:13,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:13,560 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:13,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:13,714 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:13,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13 WrapperNode [2020-09-24 14:54:13,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:13,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:13,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:13,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:13,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:13,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:13,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:13,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:13,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (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 [2020-09-24 14:54:13,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:13,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:13,856 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-24 14:54:13,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 14:54:13,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 14:54:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-24 14:54:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 14:54:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 14:54:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:14,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:14,440 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 14:54:14,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:14 BoogieIcfgContainer [2020-09-24 14:54:14,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:14,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:14,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:14,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:14,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:13" (1/3) ... [2020-09-24 14:54:14,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7634b4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:14, skipping insertion in model container [2020-09-24 14:54:14,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (2/3) ... [2020-09-24 14:54:14,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7634b4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:14, skipping insertion in model container [2020-09-24 14:54:14,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:14" (3/3) ... [2020-09-24 14:54:14,459 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-24 14:54:14,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:14,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:14,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:14,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:14,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:14,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:14,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:14,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:14,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:14,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:14,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-24 14:54:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 14:54:14,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:14,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:14,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-24 14:54:14,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:14,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650820554] [2020-09-24 14:54:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:54:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:14,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650820554] [2020-09-24 14:54:14,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:14,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:14,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736361035] [2020-09-24 14:54:14,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:14,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:14,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:14,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:14,950 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-24 14:54:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:15,416 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-24 14:54:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:15,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 14:54:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:15,434 INFO L225 Difference]: With dead ends: 308 [2020-09-24 14:54:15,435 INFO L226 Difference]: Without dead ends: 158 [2020-09-24 14:54:15,440 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 [2020-09-24 14:54:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-24 14:54:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-24 14:54:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 14:54:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-24 14:54:15,508 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-24 14:54:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:15,509 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-24 14:54:15,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-24 14:54:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 14:54:15,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:15,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:15,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:15,513 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-24 14:54:15,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:15,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436577118] [2020-09-24 14:54:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:15,594 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:15,594 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:15,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:15,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:15 BoogieIcfgContainer [2020-09-24 14:54:15,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:15,626 INFO L168 Benchmark]: Toolchain (without parser) took 2444.72 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 102.6 MB in the beginning and 175.8 MB in the end (delta: -73.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:15,627 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:54:15,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.95 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 180.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:15,629 INFO L168 Benchmark]: Boogie Preprocessor took 63.69 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:15,630 INFO L168 Benchmark]: RCFGBuilder took 667.92 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 141.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:15,631 INFO L168 Benchmark]: TraceAbstraction took 1173.50 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 141.0 MB in the beginning and 175.8 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:54:15,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 530.95 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 180.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.69 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 667.92 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 141.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1173.50 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 141.0 MB in the beginning and 175.8 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 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=166occurred 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, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...