/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:42:28,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:42:28,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:42:28,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:42:28,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:42:28,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:42:28,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:42:28,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:42:28,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:42:28,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:42:28,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:42:28,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:42:28,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:42:28,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:42:28,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:42:28,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:42:28,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:42:28,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:42:28,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:42:28,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:42:28,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:42:28,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:42:28,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:42:28,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:42:28,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 19:42:28,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:42:28,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:42:28,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:42:28,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:42:28,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:42:28,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:42:28,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:42:28,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:42:28,570 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:42:28,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:42:28,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:42:28,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:42:28,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:42:28,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:42:28,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:42:28,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:42:28,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:42:28,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:42:28,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:42:28,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:42:28,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:42:28,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:42:28,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:42:28,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:42:28,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:42:28,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:42:28,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:42:28,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:42:28,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:42:28,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:42:28,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:42:28,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:42:28,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:42:28,576 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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:42:28,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:42:28,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:42:28,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:42:28,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:42:28,930 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:42:28,931 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 19:42:28,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e735ad7a2/fed3409580b34c3baf56130ce5701791/FLAG263e8c71d [2020-08-21 19:42:29,496 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:42:29,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 19:42:29,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e735ad7a2/fed3409580b34c3baf56130ce5701791/FLAG263e8c71d [2020-08-21 19:42:29,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e735ad7a2/fed3409580b34c3baf56130ce5701791 [2020-08-21 19:42:29,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:42:29,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:42:29,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:42:29,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:42:29,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:42:29,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:42:29" (1/1) ... [2020-08-21 19:42:29,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4baf12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:29, skipping insertion in model container [2020-08-21 19:42:29,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:42:29" (1/1) ... [2020-08-21 19:42:29,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:42:29,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:42:30,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:42:30,380 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:42:30,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:42:30,464 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:42:30,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30 WrapperNode [2020-08-21 19:42:30,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:42:30,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:42:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:42:30,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:42:30,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... [2020-08-21 19:42:30,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:42:30,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:42:30,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:42:30,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:42:30,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:42:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:42:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:42:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 19:42:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 19:42:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 19:42:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:42:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:42:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 19:42:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 19:42:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 19:42:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:42:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 19:42:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:42:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:42:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 19:42:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:42:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 19:42:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:42:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:42:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 19:42:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:42:31,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:42:31,250 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 19:42:31,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:42:31 BoogieIcfgContainer [2020-08-21 19:42:31,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:42:31,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:42:31,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:42:31,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:42:31,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:42:29" (1/3) ... [2020-08-21 19:42:31,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d1320d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:42:31, skipping insertion in model container [2020-08-21 19:42:31,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:30" (2/3) ... [2020-08-21 19:42:31,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d1320d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:42:31, skipping insertion in model container [2020-08-21 19:42:31,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:42:31" (3/3) ... [2020-08-21 19:42:31,271 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 19:42:31,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:42:31,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:42:31,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:42:31,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:42:31,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:42:31,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:42:31,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:42:31,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:42:31,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:42:31,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:42:31,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:42:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 19:42:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 19:42:31,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:31,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:42:31,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:31,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:31,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 19:42:31,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:31,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50619818] [2020-08-21 19:42:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:31,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:42:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:31,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:42:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:42:31,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50619818] [2020-08-21 19:42:31,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:42:31,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:42:31,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783271958] [2020-08-21 19:42:31,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:42:31,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:42:31,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:42:31,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:42:31,632 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 19:42:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:42:32,005 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 19:42:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:42:32,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 19:42:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:42:32,019 INFO L225 Difference]: With dead ends: 142 [2020-08-21 19:42:32,019 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 19:42:32,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:42:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 19:42:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 19:42:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 19:42:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 19:42:32,075 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 19:42:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:42:32,075 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 19:42:32,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:42:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 19:42:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:42:32,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:32,077 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] [2020-08-21 19:42:32,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:42:32,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:32,079 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 19:42:32,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:32,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374741351] [2020-08-21 19:42:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:42:32,148 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:42:32,148 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:42:32,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:42:32,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:42:32 BoogieIcfgContainer [2020-08-21 19:42:32,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:42:32,176 INFO L168 Benchmark]: Toolchain (without parser) took 2262.95 ms. Allocated memory was 141.0 MB in the beginning and 235.4 MB in the end (delta: 94.4 MB). Free memory was 102.2 MB in the beginning and 190.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:32,177 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:42:32,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.84 ms. Allocated memory was 141.0 MB in the beginning and 201.9 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 176.2 MB in the end (delta: -74.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:32,181 INFO L168 Benchmark]: Boogie Preprocessor took 63.44 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 173.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:32,182 INFO L168 Benchmark]: RCFGBuilder took 731.70 ms. Allocated memory is still 201.9 MB. Free memory was 173.4 MB in the beginning and 137.1 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:32,183 INFO L168 Benchmark]: TraceAbstraction took 910.96 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 136.5 MB in the beginning and 190.5 MB in the end (delta: -54.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:42:32,190 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 551.84 ms. Allocated memory was 141.0 MB in the beginning and 201.9 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 176.2 MB in the end (delta: -74.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.44 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 173.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 731.70 ms. Allocated memory is still 201.9 MB. Free memory was 173.4 MB in the beginning and 137.1 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 910.96 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 136.5 MB in the beginning and 190.5 MB in the end (delta: -54.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...