/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:22:26,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:22:26,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:22:26,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:22:26,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:22:26,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:22:26,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:22:26,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:22:26,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:22:26,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:22:26,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:22:26,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:22:26,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:22:26,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:22:26,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:22:26,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:22:26,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:22:26,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:22:26,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:22:26,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:22:26,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:22:26,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:22:26,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:22:26,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:22:26,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:22:26,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:22:26,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:22:26,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:22:26,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:22:26,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 01:22:26,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:22:26,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:22:26,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:22:26,201 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 [2020-08-22 01:22:26,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:22:26,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:22:26,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:22:26,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:22:26,254 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:22:26,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:22:26,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:22:26,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:22:26,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:22:26,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:22:26,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:22:26,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:22:26,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:22:26,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:22:26,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:22:26,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:22:26,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:22:26,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:22:26,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:22:26,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:22:26,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:22:26,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:22:26,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:22:26,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:22:26,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:22:26,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:22:26,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:22:26,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:22:26,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:22:26,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:22:26,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:22:26,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:22:26,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:22:26,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:22:26,649 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:22:26,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-08-22 01:22:26,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/681684b27/aaf8f0f5165a49b797b5c6638087b4dd/FLAG649946741 [2020-08-22 01:22:27,185 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:22:27,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-08-22 01:22:27,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/681684b27/aaf8f0f5165a49b797b5c6638087b4dd/FLAG649946741 [2020-08-22 01:22:27,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/681684b27/aaf8f0f5165a49b797b5c6638087b4dd [2020-08-22 01:22:27,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:22:27,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:22:27,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:27,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:22:27,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:22:27,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:27" (1/1) ... [2020-08-22 01:22:27,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab111fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:27, skipping insertion in model container [2020-08-22 01:22:27,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:27" (1/1) ... [2020-08-22 01:22:27,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:22:27,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:22:27,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:27,914 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:22:27,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:28,098 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:22:28,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28 WrapperNode [2020-08-22 01:22:28,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:28,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:22:28,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:22:28,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:22:28,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (1/1) ... [2020-08-22 01:22:28,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:22:28,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:22:28,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:22:28,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:22:28,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (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 [2020-08-22 01:22:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:22:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:22:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-08-22 01:22:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-22 01:22:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:22:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:22:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-08-22 01:22:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:22:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 01:22:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:22:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:22:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:22:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 01:22:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-22 01:22:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:22:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:22:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:22:28,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:22:28,623 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 01:22:28,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:28 BoogieIcfgContainer [2020-08-22 01:22:28,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:22:28,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:22:28,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:22:28,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:22:28,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:22:27" (1/3) ... [2020-08-22 01:22:28,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1fd4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:28, skipping insertion in model container [2020-08-22 01:22:28,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:28" (2/3) ... [2020-08-22 01:22:28,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1fd4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:28, skipping insertion in model container [2020-08-22 01:22:28,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:28" (3/3) ... [2020-08-22 01:22:28,637 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c [2020-08-22 01:22:28,648 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:22:28,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:22:28,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:22:28,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:22:28,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:22:28,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:22:28,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:22:28,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:22:28,695 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:22:28,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:22:28,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:22:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-22 01:22:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 01:22:28,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:28,718 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] [2020-08-22 01:22:28,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:28,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash -305625155, now seen corresponding path program 1 times [2020-08-22 01:22:28,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:28,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371350068] [2020-08-22 01:22:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:22:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:22:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:22:28,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371350068] [2020-08-22 01:22:28,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:22:28,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:22:28,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442871119] [2020-08-22 01:22:28,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:22:28,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:22:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:22:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:22:29,009 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-22 01:22:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:29,237 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2020-08-22 01:22:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:22:29,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 01:22:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:29,250 INFO L225 Difference]: With dead ends: 76 [2020-08-22 01:22:29,251 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 01:22:29,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:22:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 01:22:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 01:22:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 01:22:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-08-22 01:22:29,301 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2020-08-22 01:22:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:29,301 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-08-22 01:22:29,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:22:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-08-22 01:22:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 01:22:29,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:29,303 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] [2020-08-22 01:22:29,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:22:29,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -231212118, now seen corresponding path program 1 times [2020-08-22 01:22:29,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:29,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699001819] [2020-08-22 01:22:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:22:29,397 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:22:29,398 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:22:29,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:22:29,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:22:29 BoogieIcfgContainer [2020-08-22 01:22:29,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:22:29,423 INFO L168 Benchmark]: Toolchain (without parser) took 1864.37 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 105.4 MB in the beginning and 113.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:29,425 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 146.3 MB. Free memory was 124.2 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:22:29,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.13 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 105.2 MB in the beginning and 183.2 MB in the end (delta: -78.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:29,427 INFO L168 Benchmark]: Boogie Preprocessor took 51.00 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 181.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:29,427 INFO L168 Benchmark]: RCFGBuilder took 477.34 ms. Allocated memory is still 205.0 MB. Free memory was 181.1 MB in the beginning and 161.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:29,428 INFO L168 Benchmark]: TraceAbstraction took 790.83 ms. Allocated memory is still 205.0 MB. Free memory was 160.6 MB in the beginning and 113.6 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:29,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 146.3 MB. Free memory was 124.2 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 537.13 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 105.2 MB in the beginning and 183.2 MB in the end (delta: -78.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.00 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 181.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.34 ms. Allocated memory is still 205.0 MB. Free memory was 181.1 MB in the beginning and 161.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 790.83 ms. Allocated memory is still 205.0 MB. Free memory was 160.6 MB in the beginning and 113.6 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; [L75] float x = -1.0f / 0.0f; [L76] CALL, EXPR floor_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L76] RET, EXPR floor_float(x) [L76] float res = floor_float(x); [L79] CALL, EXPR isinf_float(res) [L58] __int32_t ix; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); [L79] RET, EXPR isinf_float(res) [L79] COND TRUE !isinf_float(res) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 39 SDslu, 5 SDs, 0 SdLazy, 49 SolverSat, 11 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 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...