/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:01:54,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:01:54,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:01:54,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:01:54,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:01:54,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:01:54,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:01:54,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:01:54,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:01:54,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:01:54,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:01:54,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:01:54,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:01:54,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:01:54,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:01:54,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:01:54,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:01:54,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:01:54,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:01:54,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:01:54,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:01:54,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:01:54,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:01:54,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:01:54,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:01:54,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:01:54,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:01:54,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:01:54,635 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 [2020-08-18 17:01:54,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:01:54,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:01:54,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:01:54,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:01:54,677 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:01:54,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:01:54,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:01:54,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:01:54,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:01:54,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:01:54,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:01:54,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:01:54,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:01:54,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:01:54,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:01:54,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:01:54,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:01:54,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:01:54,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:01:54,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:01:54,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:01:54,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:01:54,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:01:54,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:01:54,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:01:54,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:01:54,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:01:54,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:01:54,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:01:54,681 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=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:01:54,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:01:54,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:01:54,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:01:54,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:01:54,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:01:54,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-08-18 17:01:55,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72a7be9b/4b18abf7b82e4c519d77fa8917b04186/FLAG8f9af6b16 [2020-08-18 17:01:55,536 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:01:55,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-08-18 17:01:55,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72a7be9b/4b18abf7b82e4c519d77fa8917b04186/FLAG8f9af6b16 [2020-08-18 17:01:55,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72a7be9b/4b18abf7b82e4c519d77fa8917b04186 [2020-08-18 17:01:55,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:01:55,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:01:55,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:01:55,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:01:55,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:01:55,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:01:55" (1/1) ... [2020-08-18 17:01:55,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19617743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:55, skipping insertion in model container [2020-08-18 17:01:55,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:01:55" (1/1) ... [2020-08-18 17:01:55,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:01:55,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:01:56,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:01:56,173 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:01:56,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:01:56,317 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:01:56,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56 WrapperNode [2020-08-18 17:01:56,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:01:56,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:01:56,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:01:56,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:01:56,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (1/1) ... [2020-08-18 17:01:56,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:01:56,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:01:56,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:01:56,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:01:56,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (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 [2020-08-18 17:01:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:01:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:01:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 17:01:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-18 17:01:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 17:01:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:01:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:01:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 17:01:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-18 17:01:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:01:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:01:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:01:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:01:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:01:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:01:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 17:01:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:01:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:01:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:01:56,829 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:01:56,829 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 17:01:56,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:01:56 BoogieIcfgContainer [2020-08-18 17:01:56,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:01:56,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:01:56,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:01:56,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:01:56,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:01:55" (1/3) ... [2020-08-18 17:01:56,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460b91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:01:56, skipping insertion in model container [2020-08-18 17:01:56,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:01:56" (2/3) ... [2020-08-18 17:01:56,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460b91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:01:56, skipping insertion in model container [2020-08-18 17:01:56,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:01:56" (3/3) ... [2020-08-18 17:01:56,841 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-08-18 17:01:56,849 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:01:56,856 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:01:56,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:01:56,890 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:01:56,890 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:01:56,890 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:01:56,890 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:01:56,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:01:56,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:01:56,891 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:01:56,891 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:01:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-18 17:01:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 17:01:56,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:56,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:01:56,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:56,920 INFO L82 PathProgramCache]: Analyzing trace with hash -597726452, now seen corresponding path program 1 times [2020-08-18 17:01:56,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:56,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396468103] [2020-08-18 17:01:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:01:57,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396468103] [2020-08-18 17:01:57,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:01:57,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:01:57,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813569142] [2020-08-18 17:01:57,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:01:57,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:57,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:01:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:01:57,169 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-08-18 17:01:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:57,398 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2020-08-18 17:01:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:01:57,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 17:01:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:57,410 INFO L225 Difference]: With dead ends: 78 [2020-08-18 17:01:57,411 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 17:01:57,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:01:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 17:01:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 17:01:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 17:01:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-08-18 17:01:57,458 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2020-08-18 17:01:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:57,458 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-08-18 17:01:57,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:01:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-08-18 17:01:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 17:01:57,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:57,460 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] [2020-08-18 17:01:57,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:01:57,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash -524929330, now seen corresponding path program 1 times [2020-08-18 17:01:57,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:57,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435303176] [2020-08-18 17:01:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:01:57,514 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:01:57,514 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:01:57,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:01:57,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:01:57 BoogieIcfgContainer [2020-08-18 17:01:57,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:01:57,539 INFO L168 Benchmark]: Toolchain (without parser) took 1631.28 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 114.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:01:57,540 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:01:57,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.08 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 182.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:01:57,542 INFO L168 Benchmark]: Boogie Preprocessor took 49.69 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:01:57,543 INFO L168 Benchmark]: RCFGBuilder took 463.54 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 158.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:01:57,544 INFO L168 Benchmark]: TraceAbstraction took 702.24 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 114.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:01:57,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.08 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 182.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.69 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.54 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 158.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 702.24 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 114.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L86] double x = -0.0; [L87] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND TRUE exponent_less_1023 < 20 [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] EXPR res == -0.0 && __signbit_double(res) == 1 [L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 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: 45 SDtfs, 40 SDslu, 5 SDs, 0 SdLazy, 50 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 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...