/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:48:22,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:48:22,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:48:23,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:48:23,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:48:23,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:48:23,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:48:23,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:48:23,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:48:23,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:48:23,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:48:23,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:48:23,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:48:23,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:48:23,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:48:23,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:48:23,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:48:23,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:48:23,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:48:23,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:48:23,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:48:23,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:48:23,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:48:23,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:48:23,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:48:23,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:48:23,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:48:23,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:48:23,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:48:23,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:48:23,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:48:23,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:48:23,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:48:23,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:48:23,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:48:23,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:48:23,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:48:23,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:48:23,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:48:23,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:48:23,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:48:23,096 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 03:48:23,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:48:23,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:48:23,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:48:23,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:48:23,140 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:48:23,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:48:23,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:48:23,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:48:23,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:48:23,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:48:23,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:48:23,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:48:23,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:48:23,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:48:23,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:48:23,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:48:23,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:48:23,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:48:23,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:48:23,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:48:23,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:48:23,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:48:23,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:48:23,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:48:23,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:48:23,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:48:23,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:48:23,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:48:23,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:48:23,146 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:48:23,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:48:23,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:48:23,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:48:23,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:48:23,462 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:48:23,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 03:48:23,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9523aa6c/cb36d9a0d52d47d99d988001fdc324ca/FLAG64f4493d3 [2020-08-22 03:48:23,993 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:48:23,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 03:48:24,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9523aa6c/cb36d9a0d52d47d99d988001fdc324ca/FLAG64f4493d3 [2020-08-22 03:48:24,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9523aa6c/cb36d9a0d52d47d99d988001fdc324ca [2020-08-22 03:48:24,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:48:24,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:48:24,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:48:24,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:48:24,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:48:24,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243026c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24, skipping insertion in model container [2020-08-22 03:48:24,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:48:24,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:48:24,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:48:24,706 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:48:24,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:48:24,904 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:48:24,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24 WrapperNode [2020-08-22 03:48:24,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:48:24,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:48:24,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:48:24,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:48:24,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (1/1) ... [2020-08-22 03:48:24,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:48:24,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:48:24,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:48:24,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:48:24,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (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 03:48:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 03:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-22 03:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:48:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 03:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-22 03:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 03:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:48:25,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:48:25,506 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 03:48:25,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:48:25 BoogieIcfgContainer [2020-08-22 03:48:25,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:48:25,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:48:25,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:48:25,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:48:25,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:48:24" (1/3) ... [2020-08-22 03:48:25,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a870f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:48:25, skipping insertion in model container [2020-08-22 03:48:25,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:24" (2/3) ... [2020-08-22 03:48:25,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a870f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:48:25, skipping insertion in model container [2020-08-22 03:48:25,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:48:25" (3/3) ... [2020-08-22 03:48:25,519 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-22 03:48:25,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:48:25,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:48:25,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:48:25,581 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:48:25,581 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:48:25,581 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:48:25,582 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:48:25,582 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:48:25,582 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:48:25,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:48:25,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:48:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-22 03:48:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 03:48:25,611 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:25,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:48:25,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:25,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-22 03:48:25,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:25,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645338808] [2020-08-22 03:48:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:48:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:48:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 03:48:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:25,891 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 03:48:25,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645338808] [2020-08-22 03:48:25,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:48:25,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:48:25,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019048524] [2020-08-22 03:48:25,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:48:25,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:48:25,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:48:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:48:25,923 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-22 03:48:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:48:26,184 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-22 03:48:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:48:26,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 03:48:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:48:26,197 INFO L225 Difference]: With dead ends: 112 [2020-08-22 03:48:26,197 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 03:48:26,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:48:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 03:48:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-22 03:48:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 03:48:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-22 03:48:26,247 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-22 03:48:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:48:26,247 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-22 03:48:26,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:48:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-22 03:48:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 03:48:26,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:26,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:48:26,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:48:26,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-22 03:48:26,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:26,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390110765] [2020-08-22 03:48:26,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:48:26,355 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:48:26,355 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:48:26,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:48:26,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:48:26 BoogieIcfgContainer [2020-08-22 03:48:26,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:48:26,405 INFO L168 Benchmark]: Toolchain (without parser) took 1992.07 ms. Allocated memory was 149.4 MB in the beginning and 232.3 MB in the end (delta: 82.8 MB). Free memory was 104.8 MB in the beginning and 201.5 MB in the end (delta: -96.7 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:26,406 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:48:26,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.01 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 104.6 MB in the beginning and 181.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:26,408 INFO L168 Benchmark]: Boogie Preprocessor took 52.52 ms. Allocated memory is still 206.0 MB. Free memory was 181.9 MB in the beginning and 180.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:26,409 INFO L168 Benchmark]: RCFGBuilder took 552.58 ms. Allocated memory is still 206.0 MB. Free memory was 180.0 MB in the beginning and 152.2 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:26,410 INFO L168 Benchmark]: TraceAbstraction took 889.63 ms. Allocated memory was 206.0 MB in the beginning and 232.3 MB in the end (delta: 26.2 MB). Free memory was 151.6 MB in the beginning and 201.5 MB in the end (delta: -49.9 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:26,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 492.01 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 104.6 MB in the beginning and 181.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.52 ms. Allocated memory is still 206.0 MB. Free memory was 181.9 MB in the beginning and 180.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 552.58 ms. Allocated memory is still 206.0 MB. Free memory was 180.0 MB in the beginning and 152.2 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 889.63 ms. Allocated memory was 206.0 MB in the beginning and 232.3 MB in the end (delta: 26.2 MB). Free memory was 151.6 MB in the beginning and 201.5 MB in the end (delta: -49.9 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...