/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_1381.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:15,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:15,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:15,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:15,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:15,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:15,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:15,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:15,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:15,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:15,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:15,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:15,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:15,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:15,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:15,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:15,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:15,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:15,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:15,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:15,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:15,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:15,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:15,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:16,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:54:16,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:54:16,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:54:16,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:54:16,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:54:16,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:54:16,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:54:16,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:54:16,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:54:16,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:54:16,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:54:16,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:54:16,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:54:16,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:54:16,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:16,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:16,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:16,012 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 14:54:16,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:16,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:16,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:16,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:16,040 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:16,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:16,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:16,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:16,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:16,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:16,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:16,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:16,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:16,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:16,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:16,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:16,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:16,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:16,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:16,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:16,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:16,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:16,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:16,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:16,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:16,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:16,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:16,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:16,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:16,046 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 14:54:16,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:16,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:16,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:16,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:16,528 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:16,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-09-24 14:54:16,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd7cd5c3b/933999a0af0c490d8a4652b646733960/FLAG8d29ad1cd [2020-09-24 14:54:17,097 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:17,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-09-24 14:54:17,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd7cd5c3b/933999a0af0c490d8a4652b646733960/FLAG8d29ad1cd [2020-09-24 14:54:17,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd7cd5c3b/933999a0af0c490d8a4652b646733960 [2020-09-24 14:54:17,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:17,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:17,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:17,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:17,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:17,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17, skipping insertion in model container [2020-09-24 14:54:17,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:17,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:17,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:17,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:17,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:17,805 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:17,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17 WrapperNode [2020-09-24 14:54:17,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:17,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:17,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:17,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:17,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (1/1) ... [2020-09-24 14:54:17,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:17,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:17,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:17,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:17,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (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 14:54:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2020-09-24 14:54:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 14:54:18,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 14:54:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2020-09-24 14:54:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 14:54:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:18,391 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:18,392 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 14:54:18,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:18 BoogieIcfgContainer [2020-09-24 14:54:18,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:18,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:18,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:18,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:18,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:17" (1/3) ... [2020-09-24 14:54:18,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333df93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:18, skipping insertion in model container [2020-09-24 14:54:18,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:17" (2/3) ... [2020-09-24 14:54:18,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333df93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:18, skipping insertion in model container [2020-09-24 14:54:18,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:18" (3/3) ... [2020-09-24 14:54:18,408 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-09-24 14:54:18,423 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:18,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:18,458 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:18,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:18,491 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:18,492 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:18,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:18,492 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:18,492 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:18,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:18,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-24 14:54:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 14:54:18,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:18,541 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] [2020-09-24 14:54:18,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:18,550 INFO L82 PathProgramCache]: Analyzing trace with hash 658521785, now seen corresponding path program 1 times [2020-09-24 14:54:18,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:18,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283621342] [2020-09-24 14:54:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:54:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 14:54:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,813 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 14:54:18,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283621342] [2020-09-24 14:54:18,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:18,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:18,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069454056] [2020-09-24 14:54:18,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:18,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:18,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:18,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:18,843 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-09-24 14:54:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:19,046 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-24 14:54:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:19,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-24 14:54:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:19,062 INFO L225 Difference]: With dead ends: 118 [2020-09-24 14:54:19,062 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 14:54:19,067 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 14:54:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 14:54:19,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 14:54:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 14:54:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 59 transitions. [2020-09-24 14:54:19,121 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 59 transitions. Word has length 32 [2020-09-24 14:54:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:19,122 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 59 transitions. [2020-09-24 14:54:19,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 59 transitions. [2020-09-24 14:54:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 14:54:19,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:19,124 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, 1, 1] [2020-09-24 14:54:19,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:19,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash 418826666, now seen corresponding path program 1 times [2020-09-24 14:54:19,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:19,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964976428] [2020-09-24 14:54:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:19,226 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:19,226 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:19,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:19,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:19 BoogieIcfgContainer [2020-09-24 14:54:19,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:19,257 INFO L168 Benchmark]: Toolchain (without parser) took 1797.49 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.7 MB in the beginning and 113.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,258 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.23 ms. Allocated memory is still 137.9 MB. Free memory was 100.0 MB in the beginning and 89.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,261 INFO L168 Benchmark]: Boogie Preprocessor took 190.05 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 89.6 MB in the beginning and 180.6 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,261 INFO L168 Benchmark]: RCFGBuilder took 401.69 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 159.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,262 INFO L168 Benchmark]: TraceAbstraction took 855.00 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 113.3 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.23 ms. Allocated memory is still 137.9 MB. Free memory was 100.0 MB in the beginning and 89.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 190.05 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 89.6 MB in the beginning and 180.6 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.69 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 159.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 855.00 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 113.3 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of bitwiseOr at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L43] float x = 0.0f / 0.0f; [L44] float y = __VERIFIER_nondet_float(); [L45] CALL, EXPR copysign_float(x, y) [L13] __uint32_t ix, iy; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (y) [L22] EXPR gf_u.word [L22] (iy) = gf_u.word [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L27] EXPR sf_u.value [L27] (x) = sf_u.value [L29] return x; [L45] RET, EXPR copysign_float(x, y) [L45] float res = copysign_float(x, y); [L48] CALL, EXPR isnan_float(res) [L33] return x != x; [L48] RET, EXPR isnan_float(res) [L48] COND TRUE !isnan_float(res) [L49] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 67 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: 63 SDtfs, 21 SDslu, 35 SDs, 0 SdLazy, 68 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1612 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...