/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:13,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:13,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:13,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:13,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:13,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:13,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:13,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:13,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:13,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:13,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:13,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:13,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:13,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:13,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:13,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:13,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:13,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:13,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:13,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:13,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:13,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:13,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:13,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:13,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 21:47:13,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:47:13,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:47:13,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:47:13,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:47:13,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:47:13,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:47:13,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:47:13,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:47:13,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:13,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:13,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:13,580 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 [2020-08-27 21:47:13,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:13,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:13,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:13,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:13,633 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:13,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:13,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:13,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:13,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:13,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:13,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:13,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:13,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:13,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:13,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:13,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:13,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:13,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:13,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:13,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:13,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:13,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:13,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:13,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:13,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:13,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:13,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:13,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:13,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:13,640 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 -> false [2020-08-27 21:47:14,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:14,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:14,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:14,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:14,214 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:14,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-27 21:47:14,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3693e8e0e/1d9a7d07970345ebb3571b30b541a4a1/FLAG704397cc7 [2020-08-27 21:47:14,889 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:14,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-27 21:47:14,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3693e8e0e/1d9a7d07970345ebb3571b30b541a4a1/FLAG704397cc7 [2020-08-27 21:47:15,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3693e8e0e/1d9a7d07970345ebb3571b30b541a4a1 [2020-08-27 21:47:15,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:15,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:15,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:15,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:15,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:15,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15, skipping insertion in model container [2020-08-27 21:47:15,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:15,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:15,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:15,591 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:15,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:15,786 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:15,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15 WrapperNode [2020-08-27 21:47:15,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:15,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:15,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:15,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:15,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:15,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:15,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:15,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:15,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (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 [2020-08-27 21:47:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-27 21:47:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-27 21:47:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-27 21:47:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-27 21:47:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-27 21:47:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-27 21:47:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-27 21:47:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-27 21:47:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:16,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:16,569 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-27 21:47:16,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:16 BoogieIcfgContainer [2020-08-27 21:47:16,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:16,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:16,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:16,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:16,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:15" (1/3) ... [2020-08-27 21:47:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:16, skipping insertion in model container [2020-08-27 21:47:16,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (2/3) ... [2020-08-27 21:47:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:16, skipping insertion in model container [2020-08-27 21:47:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:16" (3/3) ... [2020-08-27 21:47:16,585 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-27 21:47:16,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:16,608 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:16,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:16,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:16,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:16,657 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:16,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:16,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:16,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:16,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:16,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-27 21:47:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-27 21:47:16,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:16,690 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] [2020-08-27 21:47:16,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:16,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-27 21:47:16,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:16,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152267642] [2020-08-27 21:47:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:47:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:17,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152267642] [2020-08-27 21:47:17,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:17,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:17,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050906401] [2020-08-27 21:47:17,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:17,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:17,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:17,038 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-27 21:47:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:17,425 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-27 21:47:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:47:17,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-27 21:47:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:17,441 INFO L225 Difference]: With dead ends: 138 [2020-08-27 21:47:17,442 INFO L226 Difference]: Without dead ends: 68 [2020-08-27 21:47:17,447 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 [2020-08-27 21:47:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-27 21:47:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-27 21:47:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-27 21:47:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-27 21:47:17,499 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-27 21:47:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:17,500 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-27 21:47:17,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-27 21:47:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-27 21:47:17,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:17,502 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] [2020-08-27 21:47:17,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:17,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-27 21:47:17,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:17,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421713250] [2020-08-27 21:47:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:17,646 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:17,647 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:17,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:17,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:17 BoogieIcfgContainer [2020-08-27 21:47:17,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:17,688 INFO L168 Benchmark]: Toolchain (without parser) took 2444.30 ms. Allocated memory was 148.4 MB in the beginning and 233.8 MB in the end (delta: 85.5 MB). Free memory was 104.4 MB in the beginning and 188.0 MB in the end (delta: -83.6 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,690 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.02 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 104.2 MB in the beginning and 180.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,692 INFO L168 Benchmark]: Boogie Preprocessor took 75.55 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 178.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,693 INFO L168 Benchmark]: RCFGBuilder took 711.77 ms. Allocated memory is still 205.5 MB. Free memory was 178.0 MB in the beginning and 141.7 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,694 INFO L168 Benchmark]: TraceAbstraction took 1108.00 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 141.0 MB in the beginning and 188.0 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:47:17,698 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 544.02 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 104.2 MB in the beginning and 180.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.55 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 178.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 711.77 ms. Allocated memory is still 205.5 MB. Free memory was 178.0 MB in the beginning and 141.7 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1108.00 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 141.0 MB in the beginning and 188.0 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 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...