/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_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:13,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:13,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:14,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:14,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:14,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:14,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:14,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:14,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:14,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:14,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:14,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:14,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:14,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:14,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:14,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:14,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:14,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:14,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:14,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:14,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:14,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:14,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:14,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:14,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:54:14,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:54:14,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:54:14,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:54:14,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:54:14,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 14:54:14,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:14,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:14,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:14,080 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 14:54:14,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:14,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:14,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:14,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:14,133 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:14,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:14,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:14,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:14,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:14,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:14,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:14,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:14,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:14,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:14,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:14,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:14,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:14,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:14,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:14,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:14,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:14,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:14,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:14,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:14,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:14,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:14,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:14,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:14,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:14,140 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 14:54:14,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:14,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:14,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:14,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:14,686 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:14,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-24 14:54:14,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7d4ea8c4/73136ff071c74a95b4666fdc9441fea3/FLAG264f3c527 [2020-09-24 14:54:15,359 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:15,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-24 14:54:15,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7d4ea8c4/73136ff071c74a95b4666fdc9441fea3/FLAG264f3c527 [2020-09-24 14:54:15,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7d4ea8c4/73136ff071c74a95b4666fdc9441fea3 [2020-09-24 14:54:15,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:15,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:15,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:15,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:15,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:15,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:15" (1/1) ... [2020-09-24 14:54:15,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:15, skipping insertion in model container [2020-09-24 14:54:15,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:15" (1/1) ... [2020-09-24 14:54:15,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:15,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:16,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:16,036 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:16,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:16,099 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:16,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16 WrapperNode [2020-09-24 14:54:16,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:16,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:16,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:16,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:16,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:16,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:16,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:16,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:16,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (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 14:54:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 14:54:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-24 14:54:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 14:54:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 14:54:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-24 14:54:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 14:54:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:16,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:16,693 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 14:54:16,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:16 BoogieIcfgContainer [2020-09-24 14:54:16,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:16,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:16,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:16,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:16,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:15" (1/3) ... [2020-09-24 14:54:16,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55287cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:16, skipping insertion in model container [2020-09-24 14:54:16,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (2/3) ... [2020-09-24 14:54:16,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55287cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:16, skipping insertion in model container [2020-09-24 14:54:16,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:16" (3/3) ... [2020-09-24 14:54:16,714 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-09-24 14:54:16,730 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:16,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:16,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:16,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:16,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:16,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:16,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:16,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:16,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:16,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:16,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-24 14:54:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 14:54:16,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:16,843 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] [2020-09-24 14:54:16,844 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash 337584138, now seen corresponding path program 1 times [2020-09-24 14:54:16,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:16,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206423486] [2020-09-24 14:54:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:54:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 14:54:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,166 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 14:54:17,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206423486] [2020-09-24 14:54:17,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:17,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:17,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610350886] [2020-09-24 14:54:17,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:17,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:17,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:17,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:17,201 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-24 14:54:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:17,437 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-24 14:54:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:17,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-24 14:54:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:17,454 INFO L225 Difference]: With dead ends: 132 [2020-09-24 14:54:17,455 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 14:54:17,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 14:54:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 14:54:17,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 14:54:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 14:54:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-24 14:54:17,523 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-24 14:54:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:17,524 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-24 14:54:17,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-24 14:54:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 14:54:17,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:17,528 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] [2020-09-24 14:54:17,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:17,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash -356550436, now seen corresponding path program 1 times [2020-09-24 14:54:17,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:17,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873412318] [2020-09-24 14:54:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:54:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:54:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,816 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 14:54:17,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873412318] [2020-09-24 14:54:17,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:17,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:54:17,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835708151] [2020-09-24 14:54:17,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:54:17,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:17,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:54:17,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:54:17,821 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-24 14:54:18,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:18,046 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 14:54:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:54:18,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 14:54:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:18,051 INFO L225 Difference]: With dead ends: 87 [2020-09-24 14:54:18,052 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 14:54:18,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:54:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 14:54:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-24 14:54:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 14:54:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 14:54:18,069 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-24 14:54:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:18,069 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 14:54:18,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:54:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 14:54:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 14:54:18,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:18,072 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] [2020-09-24 14:54:18,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:18,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:18,073 INFO L82 PathProgramCache]: Analyzing trace with hash -192516793, now seen corresponding path program 1 times [2020-09-24 14:54:18,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:18,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907357798] [2020-09-24 14:54:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:54:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 14:54:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,257 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 14:54:18,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907357798] [2020-09-24 14:54:18,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:18,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:54:18,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385323412] [2020-09-24 14:54:18,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:54:18,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:18,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:54:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:54:18,260 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 14:54:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:18,492 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 14:54:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:54:18,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 14:54:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:18,497 INFO L225 Difference]: With dead ends: 91 [2020-09-24 14:54:18,498 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 14:54:18,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:54:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 14:54:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 14:54:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 14:54:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 14:54:18,528 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-24 14:54:18,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:18,529 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 14:54:18,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:54:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 14:54:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 14:54:18,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:18,533 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] [2020-09-24 14:54:18,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:54:18,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash -587463417, now seen corresponding path program 1 times [2020-09-24 14:54:18,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:18,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809799480] [2020-09-24 14:54:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:18,603 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:18,604 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:18,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:54:18,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:18 BoogieIcfgContainer [2020-09-24 14:54:18,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:18,646 INFO L168 Benchmark]: Toolchain (without parser) took 2898.83 ms. Allocated memory was 139.5 MB in the beginning and 233.8 MB in the end (delta: 94.4 MB). Free memory was 100.9 MB in the beginning and 137.6 MB in the end (delta: -36.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:18,648 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:54:18,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.00 ms. Allocated memory is still 139.5 MB. Free memory was 100.2 MB in the beginning and 89.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:18,650 INFO L168 Benchmark]: Boogie Preprocessor took 138.67 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 89.7 MB in the beginning and 178.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:18,652 INFO L168 Benchmark]: RCFGBuilder took 461.31 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 157.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:18,658 INFO L168 Benchmark]: TraceAbstraction took 1938.19 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 157.1 MB in the beginning and 137.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:18,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.00 ms. Allocated memory is still 139.5 MB. Free memory was 100.2 MB in the beginning and 89.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.67 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 89.7 MB in the beginning and 178.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.31 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 157.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1938.19 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 157.1 MB in the beginning and 137.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 55. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) [L35] CALL, EXPR __fpclassify_float(x) [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] RET, EXPR __fpclassify_float(x) [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] RET, EXPR fmin_float(x, y) [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) [L44] return x != x; [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 59 SDslu, 387 SDs, 0 SdLazy, 288 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 10626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...