/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/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:17:05,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:17:05,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:17:05,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:17:05,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:17:05,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:17:05,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:17:05,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:17:05,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:17:05,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:17:05,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:17:05,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:17:05,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:17:05,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:17:05,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:17:05,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:17:05,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:17:05,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:17:05,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:17:05,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:17:05,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:17:05,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:17:05,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:17:05,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:17:05,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:17:05,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:17:05,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:17:05,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:17:05,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:17:05,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 10:17:05,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:17:05,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:17:05,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:17:05,741 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 [2020-09-21 10:17:05,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:17:05,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:17:05,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:17:05,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:17:05,791 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:17:05,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:17:05,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:17:05,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:17:05,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:17:05,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:17:05,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:17:05,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:17:05,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:17:05,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:17:05,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:17:05,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:17:05,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:17:05,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:17:05,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:17:05,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:17:05,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:17:05,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:17:05,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:17:05,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:17:05,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:17:05,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:17:05,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:17:05,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:17:05,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:17:05,797 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 [2020-09-21 10:17:06,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:17:06,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:17:06,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:17:06,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:17:06,289 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:17:06,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-21 10:17:06,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f1a58ea0/bb68b4ab05904a4d8cdb204e9730b1dc/FLAG74947aca6 [2020-09-21 10:17:06,958 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:17:06,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-21 10:17:06,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f1a58ea0/bb68b4ab05904a4d8cdb204e9730b1dc/FLAG74947aca6 [2020-09-21 10:17:07,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f1a58ea0/bb68b4ab05904a4d8cdb204e9730b1dc [2020-09-21 10:17:07,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:17:07,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:17:07,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:17:07,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:17:07,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:17:07,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f5c670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07, skipping insertion in model container [2020-09-21 10:17:07,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:17:07,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:17:07,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:17:07,588 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:17:07,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:17:07,740 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:17:07,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07 WrapperNode [2020-09-21 10:17:07,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:17:07,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:17:07,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:17:07,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:17:07,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (1/1) ... [2020-09-21 10:17:07,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:17:07,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:17:07,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:17:07,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:17:07,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (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 [2020-09-21 10:17:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:17:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:17:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-21 10:17:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-21 10:17:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:17:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:17:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-21 10:17:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-21 10:17:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:17:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:17:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:17:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:17:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:17:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:17:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-21 10:17:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:17:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:17:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 10:17:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:17:08,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:17:08,325 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-21 10:17:08,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:17:08 BoogieIcfgContainer [2020-09-21 10:17:08,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:17:08,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:17:08,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:17:08,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:17:08,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:17:07" (1/3) ... [2020-09-21 10:17:08,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622c0af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:17:08, skipping insertion in model container [2020-09-21 10:17:08,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:07" (2/3) ... [2020-09-21 10:17:08,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622c0af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:17:08, skipping insertion in model container [2020-09-21 10:17:08,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:17:08" (3/3) ... [2020-09-21 10:17:08,343 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-21 10:17:08,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:17:08,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:17:08,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:17:08,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:17:08,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:17:08,430 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:17:08,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:17:08,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:17:08,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:17:08,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:17:08,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:17:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-09-21 10:17:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:17:08,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:08,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:08,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-09-21 10:17:08,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:08,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291893716] [2020-09-21 10:17:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:17:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:17:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:17:08,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291893716] [2020-09-21 10:17:08,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:17:08,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:17:08,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233012729] [2020-09-21 10:17:08,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:17:08,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:08,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:17:08,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:17:08,846 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-09-21 10:17:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:09,083 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-09-21 10:17:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:17:09,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 10:17:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:09,099 INFO L225 Difference]: With dead ends: 112 [2020-09-21 10:17:09,099 INFO L226 Difference]: Without dead ends: 55 [2020-09-21 10:17:09,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:17:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-21 10:17:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-21 10:17:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-21 10:17:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-09-21 10:17:09,161 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-09-21 10:17:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:09,162 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-09-21 10:17:09,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:17:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-09-21 10:17:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 10:17:09,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:09,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:09,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:17:09,164 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-09-21 10:17:09,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:09,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999211909] [2020-09-21 10:17:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:17:09,295 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:17:09,296 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:17:09,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:17:09,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:17:09 BoogieIcfgContainer [2020-09-21 10:17:09,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:17:09,352 INFO L168 Benchmark]: Toolchain (without parser) took 2081.31 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.5 MB in the beginning and 96.4 MB in the end (delta: 6.1 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:09,353 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-21 10:17:09,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.91 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 181.0 MB in the end (delta: -79.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:09,355 INFO L168 Benchmark]: Boogie Preprocessor took 71.56 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 178.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:09,356 INFO L168 Benchmark]: RCFGBuilder took 517.44 ms. Allocated memory is still 204.5 MB. Free memory was 178.2 MB in the beginning and 150.3 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:09,357 INFO L168 Benchmark]: TraceAbstraction took 1016.92 ms. Allocated memory is still 204.5 MB. Free memory was 150.3 MB in the beginning and 96.4 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:09,361 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.91 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 181.0 MB in the end (delta: -79.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.56 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 178.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.44 ms. Allocated memory is still 204.5 MB. Free memory was 178.2 MB in the beginning and 150.3 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1016.92 ms. Allocated memory is still 204.5 MB. Free memory was 150.3 MB in the beginning and 96.4 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...