/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:33:07,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:33:07,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:33:08,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:33:08,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:33:08,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:33:08,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:33:08,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:33:08,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:33:08,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:33:08,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:33:08,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:33:08,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:33:08,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:33:08,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:33:08,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:33:08,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:33:08,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:33:08,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:33:08,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:33:08,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:33:08,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:33:08,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:33:08,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:33:08,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:33:08,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:33:08,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:33:08,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:33:08,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:33:08,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:33:08,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:33:08,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:33:08,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:33:08,110 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 00:33:08,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:33:08,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:33:08,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:33:08,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:33:08,150 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:33:08,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:33:08,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:33:08,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:33:08,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:33:08,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:33:08,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:33:08,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:33:08,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:33:08,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:33:08,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:33:08,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:33:08,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:33:08,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:33:08,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:33:08,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:33:08,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:33:08,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:33:08,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:33:08,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:33:08,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:33:08,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:33:08,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:33:08,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:33:08,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:33:08,157 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:33:08,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:33:08,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:33:08,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:33:08,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:33:08,495 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:33:08,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-22 00:33:08,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51b334f9c/74a4c52e6aad4aff87f7c44bfcf2e502/FLAG6b4b6629c [2020-08-22 00:33:09,008 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:33:09,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-22 00:33:09,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51b334f9c/74a4c52e6aad4aff87f7c44bfcf2e502/FLAG6b4b6629c [2020-08-22 00:33:09,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51b334f9c/74a4c52e6aad4aff87f7c44bfcf2e502 [2020-08-22 00:33:09,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:33:09,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:33:09,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:09,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:33:09,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:33:09,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3e4b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09, skipping insertion in model container [2020-08-22 00:33:09,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:33:09,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:33:09,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:09,637 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:33:09,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:09,691 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:33:09,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09 WrapperNode [2020-08-22 00:33:09,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:09,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:33:09,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:33:09,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:33:09,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (1/1) ... [2020-08-22 00:33:09,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:33:09,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:33:09,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:33:09,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:33:09,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (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 00:33:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:33:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:33:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 00:33:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 00:33:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:33:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:33:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:33:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 00:33:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:33:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:33:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:33:10,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:33:10,275 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 00:33:10,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:10 BoogieIcfgContainer [2020-08-22 00:33:10,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:33:10,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:33:10,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:33:10,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:33:10,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:33:09" (1/3) ... [2020-08-22 00:33:10,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f89fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:10, skipping insertion in model container [2020-08-22 00:33:10,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:09" (2/3) ... [2020-08-22 00:33:10,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f89fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:10, skipping insertion in model container [2020-08-22 00:33:10,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:10" (3/3) ... [2020-08-22 00:33:10,288 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-22 00:33:10,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:33:10,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:33:10,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:33:10,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:33:10,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:33:10,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:33:10,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:33:10,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:33:10,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:33:10,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:33:10,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:33:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 00:33:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 00:33:10,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:10,373 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] [2020-08-22 00:33:10,373 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:10,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-22 00:33:10,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:10,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650555884] [2020-08-22 00:33:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:33:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:33:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:33:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:10,727 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 00:33:10,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650555884] [2020-08-22 00:33:10,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:33:10,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:33:10,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800339752] [2020-08-22 00:33:10,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:33:10,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:33:10,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:33:10,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:33:10,771 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-22 00:33:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:33:11,057 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-22 00:33:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:33:11,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 00:33:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:33:11,071 INFO L225 Difference]: With dead ends: 86 [2020-08-22 00:33:11,072 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 00:33:11,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:33:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 00:33:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 00:33:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 00:33:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-22 00:33:11,124 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-22 00:33:11,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:33:11,125 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-22 00:33:11,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:33:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-22 00:33:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:33:11,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:11,127 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] [2020-08-22 00:33:11,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:33:11,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:11,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:11,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-22 00:33:11,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:11,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116697568] [2020-08-22 00:33:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:33:11,184 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:33:11,184 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:33:11,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:33:11,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:33:11 BoogieIcfgContainer [2020-08-22 00:33:11,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:33:11,213 INFO L168 Benchmark]: Toolchain (without parser) took 1811.41 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 104.1 MB in the beginning and 109.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:11,214 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:33:11,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.39 ms. Allocated memory is still 141.6 MB. Free memory was 103.8 MB in the beginning and 92.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:11,216 INFO L168 Benchmark]: Boogie Preprocessor took 127.41 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 92.3 MB in the beginning and 180.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:11,217 INFO L168 Benchmark]: RCFGBuilder took 459.04 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 157.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:11,218 INFO L168 Benchmark]: TraceAbstraction took 929.19 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 109.6 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:11,222 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.39 ms. Allocated memory is still 141.6 MB. Free memory was 103.8 MB in the beginning and 92.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.41 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 92.3 MB in the beginning and 180.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.04 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 157.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 929.19 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 109.6 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...