/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:45,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:45,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:45,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:45,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:45,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:45,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:45,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:45,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:45,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:45,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:45,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:45,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:45,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:45,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:45,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:45,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:45,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:45,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:45,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:45,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:45,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:45,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:45,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:46,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:16:46,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:46,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:46,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:46,012 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 10:16:46,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:46,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:46,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:46,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:46,042 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:46,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:46,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:46,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:46,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:46,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:46,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:46,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:46,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:46,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:46,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:46,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:46,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:46,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:46,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:46,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:46,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:46,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:46,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:46,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:46,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:46,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:46,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:46,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:46,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:46,047 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 10:16:46,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:46,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:46,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:46,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:46,631 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:46,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-21 10:16:46,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a557242d/e10472801cb345e3832b7ce23c721f4b/FLAG26d6bac8b [2020-09-21 10:16:47,300 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:47,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-21 10:16:47,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a557242d/e10472801cb345e3832b7ce23c721f4b/FLAG26d6bac8b [2020-09-21 10:16:47,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a557242d/e10472801cb345e3832b7ce23c721f4b [2020-09-21 10:16:47,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:47,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:47,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:47,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:47,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:47,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff 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 10:16:47,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:47,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:47,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:47,966 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:48,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:48,142 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:48,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48 WrapperNode [2020-09-21 10:16:48,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:48,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:48,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:48,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:48,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:48,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:48,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:48,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:48,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (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 10:16:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 10:16:48,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-21 10:16:48,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 10:16:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 10:16:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-21 10:16:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 10:16:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:48,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:48,927 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 10:16:48,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:48 BoogieIcfgContainer [2020-09-21 10:16:48,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:48,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:48,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:48,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:48,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:47" (1/3) ... [2020-09-21 10:16:48,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b1b9be 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 10:16:48,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (2/3) ... [2020-09-21 10:16:48,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b1b9be 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 10:16:48,941 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 10:16:48,944 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-21 10:16:48,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:48,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:48,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:49,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:49,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:49,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:49,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:49,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:49,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:49,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:49,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 10:16:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:16:49,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:49,061 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 10:16:49,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-09-21 10:16:49,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:49,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673770959] [2020-09-21 10:16:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:16:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,359 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 10:16:49,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673770959] [2020-09-21 10:16:49,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:49,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:49,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268659667] [2020-09-21 10:16:49,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:49,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:49,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:49,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:49,396 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-21 10:16:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:49,826 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-09-21 10:16:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:16:49,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 10:16:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:49,842 INFO L225 Difference]: With dead ends: 138 [2020-09-21 10:16:49,843 INFO L226 Difference]: Without dead ends: 68 [2020-09-21 10:16:49,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 10:16:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-21 10:16:49,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-21 10:16:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 10:16:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-09-21 10:16:49,907 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-09-21 10:16:49,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:49,908 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-09-21 10:16:49,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-09-21 10:16:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 10:16:49,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:49,910 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, 1] [2020-09-21 10:16:49,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:49,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:49,911 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-09-21 10:16:49,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:49,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184526353] [2020-09-21 10:16:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:50,113 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:50,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:50,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:50,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:50 BoogieIcfgContainer [2020-09-21 10:16:50,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:50,183 INFO L168 Benchmark]: Toolchain (without parser) took 2579.44 ms. Allocated memory was 147.8 MB in the beginning and 234.4 MB in the end (delta: 86.5 MB). Free memory was 103.5 MB in the beginning and 189.7 MB in the end (delta: -86.2 MB). Peak memory consumption was 352.4 kB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,185 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:16:50,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.16 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 179.7 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,189 INFO L168 Benchmark]: Boogie Preprocessor took 71.36 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,191 INFO L168 Benchmark]: RCFGBuilder took 717.90 ms. Allocated memory is still 204.5 MB. Free memory was 176.8 MB in the beginning and 141.2 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,192 INFO L168 Benchmark]: TraceAbstraction took 1242.43 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 140.5 MB in the beginning and 189.7 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:16:50,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 539.16 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 179.7 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.36 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 717.90 ms. Allocated memory is still 204.5 MB. Free memory was 176.8 MB in the beginning and 141.2 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1242.43 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 140.5 MB in the beginning and 189.7 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...