/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -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 0.1.25-5644d1e-m [2020-08-19 00:17:19,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:17:19,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:17:19,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:17:19,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:17:19,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:17:19,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:17:19,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:17:19,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:17:19,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:17:19,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:17:19,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:17:19,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:17:19,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:17:19,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:17:19,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:17:19,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:17:19,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:17:19,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:17:19,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:17:19,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:17:19,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:17:19,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:17:19,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:17:19,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:17:19,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:17:19,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:17:19,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:17:19,646 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 [2020-08-19 00:17:19,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:17:19,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:17:19,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:17:19,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:17:19,690 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:17:19,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:17:19,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:17:19,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:17:19,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:17:19,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:17:19,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:17:19,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:17:19,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:17:19,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:17:19,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:17:19,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:17:19,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:17:19,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:17:19,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:17:19,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:17:19,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:17:19,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:17:19,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:17:19,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:17:19,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:17:19,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:17:19,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:17:19,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:17:19,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:17:19,696 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:17:20,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:17:20,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:17:20,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:17:20,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:17:20,027 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:17:20,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 00:17:20,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea07cce49/5544cb880b9947c78153d7086e2d213d/FLAG5556a9452 [2020-08-19 00:17:20,647 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:17:20,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 00:17:20,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea07cce49/5544cb880b9947c78153d7086e2d213d/FLAG5556a9452 [2020-08-19 00:17:20,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea07cce49/5544cb880b9947c78153d7086e2d213d [2020-08-19 00:17:20,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:17:20,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:17:20,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:20,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:17:20,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:17:20,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:20" (1/1) ... [2020-08-19 00:17:20,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177f3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:20, skipping insertion in model container [2020-08-19 00:17:20,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:20" (1/1) ... [2020-08-19 00:17:20,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:17:21,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:17:21,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:21,190 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:17:21,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:21,329 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:17:21,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21 WrapperNode [2020-08-19 00:17:21,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:21,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:17:21,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:17:21,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:17:21,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (1/1) ... [2020-08-19 00:17:21,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:17:21,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:17:21,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:17:21,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:17:21,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (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 [2020-08-19 00:17:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:17:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:17:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 00:17:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 00:17:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:17:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:17:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 00:17:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 00:17:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:17:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 00:17:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:17:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:17:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:17:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 00:17:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:17:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:17:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:17:21,795 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:17:21,796 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 00:17:21,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:21 BoogieIcfgContainer [2020-08-19 00:17:21,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:17:21,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:17:21,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:17:21,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:17:21,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:17:20" (1/3) ... [2020-08-19 00:17:21,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c61a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:21, skipping insertion in model container [2020-08-19 00:17:21,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:21" (2/3) ... [2020-08-19 00:17:21,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c61a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:21, skipping insertion in model container [2020-08-19 00:17:21,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:21" (3/3) ... [2020-08-19 00:17:21,811 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-19 00:17:21,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:17:21,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:17:21,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:17:21,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:17:21,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:17:21,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:17:21,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:17:21,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:17:21,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:17:21,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:17:21,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:17:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 00:17:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 00:17:21,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:21,928 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] [2020-08-19 00:17:21,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-19 00:17:21,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:21,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429923859] [2020-08-19 00:17:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:17:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:17:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:17:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:17:22,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429923859] [2020-08-19 00:17:22,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:17:22,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:17:22,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561299882] [2020-08-19 00:17:22,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:17:22,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:17:22,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:17:22,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:17:22,210 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 00:17:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:17:22,502 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 00:17:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:17:22,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 00:17:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:17:22,517 INFO L225 Difference]: With dead ends: 86 [2020-08-19 00:17:22,517 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 00:17:22,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:17:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 00:17:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 00:17:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 00:17:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 00:17:22,569 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 00:17:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:17:22,570 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 00:17:22,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:17:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 00:17:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 00:17:22,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:22,572 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] [2020-08-19 00:17:22,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:17:22,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:22,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-19 00:17:22,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:22,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155225364] [2020-08-19 00:17:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:17:22,622 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:17:22,622 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:17:22,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:17:22,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:17:22 BoogieIcfgContainer [2020-08-19 00:17:22,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:17:22,652 INFO L168 Benchmark]: Toolchain (without parser) took 1688.59 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 108.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:22,653 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 00:17:22,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.30 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 181.1 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:22,656 INFO L168 Benchmark]: Boogie Preprocessor took 45.16 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:22,657 INFO L168 Benchmark]: RCFGBuilder took 423.93 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:22,657 INFO L168 Benchmark]: TraceAbstraction took 848.51 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 108.6 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:22,662 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 366.30 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 181.1 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.16 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.93 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 848.51 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 108.6 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: 0.7s, 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, 0.0s 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...