/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:16:05,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:05,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:05,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:05,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:05,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:05,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:05,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:05,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:05,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:05,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:05,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:05,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:05,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:05,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:05,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:05,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:05,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:05,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:05,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:05,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:05,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:05,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:05,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:05,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:16:05,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:16:05,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:16:05,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:16:05,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:16:05,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 13:16:05,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:05,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:05,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:05,826 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 [2020-08-21 13:16:05,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:05,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:05,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:05,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:05,868 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:05,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:05,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:05,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:05,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:05,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:05,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:05,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:05,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:05,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:05,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:05,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:05,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:05,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:05,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:05,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:05,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:05,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:05,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:05,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:05,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:05,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:05,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:05,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:05,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:05,875 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 [2020-08-21 13:16:06,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:06,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:06,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:06,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:06,186 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:06,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 13:16:06,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/665bb299a/f8063b7391254aa19b64013268349480/FLAG5f0474fc8 [2020-08-21 13:16:06,702 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:06,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 13:16:06,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/665bb299a/f8063b7391254aa19b64013268349480/FLAG5f0474fc8 [2020-08-21 13:16:07,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/665bb299a/f8063b7391254aa19b64013268349480 [2020-08-21 13:16:07,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:07,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:07,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:07,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:07,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:07,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea71ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07, skipping insertion in model container [2020-08-21 13:16:07,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:07,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:07,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:07,359 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:07,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:07,502 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:07,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07 WrapperNode [2020-08-21 13:16:07,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:07,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:07,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:07,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:07,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:07,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:07,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:07,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:07,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (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 [2020-08-21 13:16:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 13:16:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 13:16:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 13:16:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 13:16:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:16:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:16:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:16:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:16:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:16:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:16:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:07,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:07,982 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 13:16:07,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:07 BoogieIcfgContainer [2020-08-21 13:16:07,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:07,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:07,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:07,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:07,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:07" (1/3) ... [2020-08-21 13:16:07,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c111294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:07, skipping insertion in model container [2020-08-21 13:16:07,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (2/3) ... [2020-08-21 13:16:07,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c111294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:07, skipping insertion in model container [2020-08-21 13:16:07,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:07" (3/3) ... [2020-08-21 13:16:07,996 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-21 13:16:08,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:08,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:08,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:08,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:08,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:08,049 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:08,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:08,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:08,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:08,050 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:08,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 13:16:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 13:16:08,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:08,076 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] [2020-08-21 13:16:08,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:08,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-21 13:16:08,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:08,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341698278] [2020-08-21 13:16:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:16:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:08,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341698278] [2020-08-21 13:16:08,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:08,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:08,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352181744] [2020-08-21 13:16:08,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:08,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:08,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:08,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:08,383 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 13:16:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:08,610 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 13:16:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:16:08,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 13:16:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:08,624 INFO L225 Difference]: With dead ends: 86 [2020-08-21 13:16:08,625 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 13:16:08,629 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 [2020-08-21 13:16:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 13:16:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 13:16:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 13:16:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 13:16:08,674 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 13:16:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:08,675 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 13:16:08,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 13:16:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 13:16:08,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:08,677 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] [2020-08-21 13:16:08,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:08,677 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:08,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-21 13:16:08,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:08,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215860775] [2020-08-21 13:16:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:08,734 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:08,734 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:08,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:08,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:08 BoogieIcfgContainer [2020-08-21 13:16:08,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:08,761 INFO L168 Benchmark]: Toolchain (without parser) took 1663.03 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 108.5 MB in the end (delta: -6.3 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:08,762 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 13:16:08,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.83 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 181.3 MB in the end (delta: -79.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:08,764 INFO L168 Benchmark]: Boogie Preprocessor took 46.69 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 179.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:08,765 INFO L168 Benchmark]: RCFGBuilder took 437.51 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 156.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:08,766 INFO L168 Benchmark]: TraceAbstraction took 768.48 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 108.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:08,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.83 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 181.3 MB in the end (delta: -79.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.69 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 179.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.51 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 156.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 768.48 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 108.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.1s 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...