/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:45,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:45,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:45,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:45,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:45,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:45,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:45,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:45,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:45,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:45,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:45,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:45,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:45,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:45,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:45,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:45,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:45,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:45,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:45,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:45,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:45,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:45,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:45,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:45,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:16:45,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:16:45,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:16:45,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:16:45,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:16:45,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 10:16:45,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:45,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:45,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:45,884 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 [2020-09-21 10:16:45,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:45,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:45,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:45,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:45,935 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:45,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:45,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:45,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:45,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:45,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:45,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:45,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:45,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:45,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:45,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:45,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:45,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:45,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:45,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:45,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:45,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:45,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:45,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:45,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:45,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:45,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:45,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:45,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:45,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:45,942 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 [2020-09-21 10:16:46,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:46,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:46,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:46,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:46,450 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:46,451 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-21 10:16:46,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/117c97190/dfa6ca34f86244e79918878f90e4f934/FLAG439493339 [2020-09-21 10:16:47,061 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:47,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-21 10:16:47,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/117c97190/dfa6ca34f86244e79918878f90e4f934/FLAG439493339 [2020-09-21 10:16:47,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/117c97190/dfa6ca34f86244e79918878f90e4f934 [2020-09-21 10:16:47,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:47,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:47,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:47,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:47,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:47,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6665a633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47, skipping insertion in model container [2020-09-21 10:16:47,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:47,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:47,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:47,722 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:47,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:47,899 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:47,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47 WrapperNode [2020-09-21 10:16:47,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:47,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:47,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:47,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:47,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:47,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:47,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:47,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:47,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (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 [2020-09-21 10:16:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-09-21 10:16:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-09-21 10:16:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:48,607 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:48,607 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-09-21 10:16:48,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:48 BoogieIcfgContainer [2020-09-21 10:16:48,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:48,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:48,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:48,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:48,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:47" (1/3) ... [2020-09-21 10:16:48,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ce48c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:48, skipping insertion in model container [2020-09-21 10:16:48,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47" (2/3) ... [2020-09-21 10:16:48,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ce48c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:48, skipping insertion in model container [2020-09-21 10:16:48,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:48" (3/3) ... [2020-09-21 10:16:48,623 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-09-21 10:16:48,632 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:48,642 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:48,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:48,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:48,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:48,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:48,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:48,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:48,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:48,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:48,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-09-21 10:16:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:16:48,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:48,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:48,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:48,727 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-09-21 10:16:48,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:48,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464904705] [2020-09-21 10:16:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 10:16:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:49,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464904705] [2020-09-21 10:16:49,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:49,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:49,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589554055] [2020-09-21 10:16:49,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:49,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:49,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:49,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:49,033 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-09-21 10:16:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:49,285 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-09-21 10:16:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:49,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 10:16:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:49,301 INFO L225 Difference]: With dead ends: 108 [2020-09-21 10:16:49,301 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 10:16:49,306 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 [2020-09-21 10:16:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 10:16:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 10:16:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 10:16:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-09-21 10:16:49,366 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-09-21 10:16:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:49,367 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-09-21 10:16:49,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-09-21 10:16:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 10:16:49,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:49,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:49,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:49,371 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:49,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-09-21 10:16:49,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:49,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078994759] [2020-09-21 10:16:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:16:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:49,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078994759] [2020-09-21 10:16:49,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:49,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:16:49,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340683915] [2020-09-21 10:16:49,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:16:49,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:49,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:16:49,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:16:49,566 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-09-21 10:16:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:49,802 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-09-21 10:16:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:16:49,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 10:16:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:49,805 INFO L225 Difference]: With dead ends: 57 [2020-09-21 10:16:49,805 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 10:16:49,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:16:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 10:16:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 10:16:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 10:16:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-09-21 10:16:49,817 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-09-21 10:16:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:49,820 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-09-21 10:16:49,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:16:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-09-21 10:16:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-21 10:16:49,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:49,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:49,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:49,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:49,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:49,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-09-21 10:16:49,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:49,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203609595] [2020-09-21 10:16:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:49,895 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:49,895 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:49,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:16:49,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:49 BoogieIcfgContainer [2020-09-21 10:16:49,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:49,940 INFO L168 Benchmark]: Toolchain (without parser) took 2532.25 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 103.0 MB in the beginning and 164.7 MB in the end (delta: -61.7 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,942 INFO L168 Benchmark]: CDTParser took 0.13 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. [2020-09-21 10:16:49,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.60 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 182.9 MB in the end (delta: -80.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,944 INFO L168 Benchmark]: Boogie Preprocessor took 63.29 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 180.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,946 INFO L168 Benchmark]: RCFGBuilder took 648.30 ms. Allocated memory is still 205.5 MB. Free memory was 180.4 MB in the beginning and 148.2 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,948 INFO L168 Benchmark]: TraceAbstraction took 1321.04 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 148.2 MB in the beginning and 164.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:49,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 490.60 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 182.9 MB in the end (delta: -80.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.29 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 180.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 648.30 ms. Allocated memory is still 205.5 MB. Free memory was 180.4 MB in the beginning and 148.2 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1321.04 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 148.2 MB in the beginning and 164.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [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 TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...