/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:20:11,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:11,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:11,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:11,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:11,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:11,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:11,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:11,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:11,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:11,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:11,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:11,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:11,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:11,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:11,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:11,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:11,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:11,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:11,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:11,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:11,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:11,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:11,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:11,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:11,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:11,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:11,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:11,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:11,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 04:20:11,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:11,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:11,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:11,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:20:11,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:11,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:11,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:11,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:11,355 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:11,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:11,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:11,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:11,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:11,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:11,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:11,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:11,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:11,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:11,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:11,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:11,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:11,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:11,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:11,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:11,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:11,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:11,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:11,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:11,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:11,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:11,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:11,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:11,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:11,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:20:11,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:11,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:11,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:11,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:11,698 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:11,699 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2020-08-19 04:20:11,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf7bbc87c/fd47a212dbdc4675bb2c787a52ec2cc9/FLAG25c31a6f4 [2020-08-19 04:20:12,285 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:12,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2020-08-19 04:20:12,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf7bbc87c/fd47a212dbdc4675bb2c787a52ec2cc9/FLAG25c31a6f4 [2020-08-19 04:20:12,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf7bbc87c/fd47a212dbdc4675bb2c787a52ec2cc9 [2020-08-19 04:20:12,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:12,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:12,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:12,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:12,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:12,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313262ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12, skipping insertion in model container [2020-08-19 04:20:12,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:12,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:12,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:12,860 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:12,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:12,998 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:12,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12 WrapperNode [2020-08-19 04:20:12,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:13,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:13,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:13,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:13,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:13,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:13,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:13,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:13,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:13,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 04:20:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 04:20:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 04:20:13,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:13,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:13,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:13,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:13,482 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 04:20:13,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:13 BoogieIcfgContainer [2020-08-19 04:20:13,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:13,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:13,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:13,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:13,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:12" (1/3) ... [2020-08-19 04:20:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50965ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:13, skipping insertion in model container [2020-08-19 04:20:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (2/3) ... [2020-08-19 04:20:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50965ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:13, skipping insertion in model container [2020-08-19 04:20:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:13" (3/3) ... [2020-08-19 04:20:13,496 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052d.c [2020-08-19 04:20:13,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:13,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:13,537 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:13,584 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:13,584 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:13,585 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:13,585 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:13,585 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:13,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:13,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:13,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-19 04:20:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:20:13,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:13,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:13,613 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-19 04:20:13,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:13,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465624951] [2020-08-19 04:20:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:13,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:13,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:20:13,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465624951] [2020-08-19 04:20:13,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:13,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:13,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550093361] [2020-08-19 04:20:13,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:13,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:13,871 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-19 04:20:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:14,142 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-19 04:20:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:20:14,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 04:20:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:14,155 INFO L225 Difference]: With dead ends: 94 [2020-08-19 04:20:14,155 INFO L226 Difference]: Without dead ends: 47 [2020-08-19 04:20:14,159 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 [2020-08-19 04:20:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-19 04:20:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-19 04:20:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-19 04:20:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-19 04:20:14,204 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-19 04:20:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:14,205 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-19 04:20:14,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-19 04:20:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:20:14,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:14,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:14,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:14,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:14,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:14,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-19 04:20:14,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:14,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512079403] [2020-08-19 04:20:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:14,266 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:14,266 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:14,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:14,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:14 BoogieIcfgContainer [2020-08-19 04:20:14,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:14,293 INFO L168 Benchmark]: Toolchain (without parser) took 1690.65 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 106.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,294 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:20:14,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.70 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 181.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,296 INFO L168 Benchmark]: Boogie Preprocessor took 55.38 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 179.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,297 INFO L168 Benchmark]: RCFGBuilder took 431.20 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 155.5 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,298 INFO L168 Benchmark]: TraceAbstraction took 801.73 ms. Allocated memory is still 203.9 MB. Free memory was 154.8 MB in the beginning and 106.0 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 397.70 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 181.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.38 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 179.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.20 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 155.5 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 801.73 ms. Allocated memory is still 203.9 MB. Free memory was 154.8 MB in the beginning and 106.0 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = 0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == 0.0 && __signbit_double(res) == 0 [L102] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...