/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:11,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:11,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:11,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:11,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:11,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:11,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:11,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:11,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:11,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:11,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:11,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:11,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:11,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:11,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:11,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:11,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:11,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:11,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:11,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:11,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:12,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:12,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:12,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:12,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:54:12,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:54:12,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:54:12,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:54:12,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:54:12,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:54:12,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:54:12,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:54:12,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:54:12,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:54:12,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:54:12,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:54:12,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:54:12,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:54:12,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:12,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:12,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:12,027 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 14:54:12,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:12,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:12,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:12,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:12,076 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:12,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:12,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:12,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:12,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:12,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:12,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:12,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:12,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:12,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:12,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:12,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:12,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:12,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:12,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:12,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:12,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:12,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:12,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:12,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:12,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:12,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:12,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:12,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:12,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:12,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:54:12,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:12,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:12,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:12,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:12,646 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:12,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-09-24 14:54:12,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7145138/bf80bbce22794db29a3358e30f99ad9d/FLAG1170df8a1 [2020-09-24 14:54:13,325 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:13,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-09-24 14:54:13,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7145138/bf80bbce22794db29a3358e30f99ad9d/FLAG1170df8a1 [2020-09-24 14:54:13,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7145138/bf80bbce22794db29a3358e30f99ad9d [2020-09-24 14:54:13,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:13,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:13,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:13,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:13,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:13,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f546c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13, skipping insertion in model container [2020-09-24 14:54:13,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:13,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:13,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:13,938 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:13,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:13,991 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:13,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13 WrapperNode [2020-09-24 14:54:13,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:13,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:13,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:13,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:14,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:14,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:14,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:14,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:14,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:14,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:14,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-09-24 14:54:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 14:54:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-09-24 14:54:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 14:54:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:14,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:14,746 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 14:54:14,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:14 BoogieIcfgContainer [2020-09-24 14:54:14,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:14,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:14,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:14,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:14,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:13" (1/3) ... [2020-09-24 14:54:14,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f49a6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:14, skipping insertion in model container [2020-09-24 14:54:14,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13" (2/3) ... [2020-09-24 14:54:14,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f49a6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:14, skipping insertion in model container [2020-09-24 14:54:14,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:14" (3/3) ... [2020-09-24 14:54:14,769 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-09-24 14:54:14,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:14,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:14,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:14,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:14,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:14,851 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:14,851 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:14,851 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:14,851 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:14,851 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:14,852 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-09-24 14:54:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 14:54:14,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:14,896 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] [2020-09-24 14:54:14,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:14,906 INFO L82 PathProgramCache]: Analyzing trace with hash -3412261, now seen corresponding path program 1 times [2020-09-24 14:54:14,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:14,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122068206] [2020-09-24 14:54:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:54:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 14:54:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,257 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 14:54:15,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122068206] [2020-09-24 14:54:15,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:15,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:15,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932976640] [2020-09-24 14:54:15,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:15,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:15,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:15,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:15,292 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 4 states. [2020-09-24 14:54:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:15,690 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2020-09-24 14:54:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:15,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-24 14:54:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:15,714 INFO L225 Difference]: With dead ends: 249 [2020-09-24 14:54:15,715 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 14:54:15,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:54:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 14:54:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-09-24 14:54:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 14:54:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-09-24 14:54:15,830 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 41 [2020-09-24 14:54:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:15,831 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-09-24 14:54:15,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-09-24 14:54:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 14:54:15,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:15,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:15,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:15,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash 911495883, now seen corresponding path program 1 times [2020-09-24 14:54:15,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:15,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213498929] [2020-09-24 14:54:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:54:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 14:54:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:16,023 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 14:54:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213498929] [2020-09-24 14:54:16,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:16,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:54:16,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672649399] [2020-09-24 14:54:16,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:54:16,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:16,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:54:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:54:16,028 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 5 states. [2020-09-24 14:54:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:16,301 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-09-24 14:54:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:54:16,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-09-24 14:54:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:16,304 INFO L225 Difference]: With dead ends: 127 [2020-09-24 14:54:16,305 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 14:54:16,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:54:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 14:54:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-09-24 14:54:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 14:54:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-09-24 14:54:16,319 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 57 [2020-09-24 14:54:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:16,322 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-09-24 14:54:16,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:54:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-09-24 14:54:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 14:54:16,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:16,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:16,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:16,326 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash 376809565, now seen corresponding path program 1 times [2020-09-24 14:54:16,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:16,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435084880] [2020-09-24 14:54:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:16,419 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:16,419 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:16,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:54:16,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:16 BoogieIcfgContainer [2020-09-24 14:54:16,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:16,478 INFO L168 Benchmark]: Toolchain (without parser) took 2842.76 ms. Allocated memory was 141.0 MB in the beginning and 235.4 MB in the end (delta: 94.4 MB). Free memory was 104.0 MB in the beginning and 139.7 MB in the end (delta: -35.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,479 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.43 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 92.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,481 INFO L168 Benchmark]: Boogie Preprocessor took 139.34 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 181.1 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,483 INFO L168 Benchmark]: RCFGBuilder took 626.33 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 148.5 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,485 INFO L168 Benchmark]: TraceAbstraction took 1712.57 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 147.9 MB in the beginning and 139.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.43 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 92.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.34 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 181.1 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 626.33 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 148.5 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1712.57 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 147.9 MB in the beginning and 139.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L82] CALL, EXPR modf_float(x, &iptr) [L14] __int32_t i0, j0; [L15] __uint32_t i; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f [L22] COND TRUE j0 < 23 [L23] COND TRUE j0 < 0 [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; [L82] RET, EXPR modf_float(x, &iptr) [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L85] CALL, EXPR isnan_float(iptr) [L73] return x != x; [L85] RET, EXPR isnan_float(iptr) [L85] isnan_float(iptr) && !isnan_float(res) [L85] CALL, EXPR isnan_float(res) [L73] return x != x; [L85] RET, EXPR isnan_float(res) [L85] isnan_float(iptr) && !isnan_float(res) [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 134 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 253 SDtfs, 38 SDslu, 251 SDs, 0 SdLazy, 338 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 7096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...