/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=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:31:50,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:31:50,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:31:51,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:31:51,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:31:51,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:31:51,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:31:51,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:31:51,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:31:51,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:31:51,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:31:51,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:31:51,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:31:51,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:31:51,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:31:51,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:31:51,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:31:51,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:31:51,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:31:51,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:31:51,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:31:51,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:31:51,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:31:51,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:31:51,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:31:51,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:31:51,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:31:51,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:31:51,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:31:51,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:31:51,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:31:51,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:31:51,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:31:51,119 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 03:31:51,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:31:51,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:31:51,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:31:51,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:31:51,158 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:31:51,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:31:51,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:31:51,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:31:51,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:31:51,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:31:51,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:31:51,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:31:51,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:31:51,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:31:51,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:31:51,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:31:51,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:31:51,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:31:51,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:31:51,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:31:51,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:31:51,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:31:51,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:31:51,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:31:51,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:31:51,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:31:51,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:31:51,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:31:51,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:31:51,164 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=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:31:51,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:31:51,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:31:51,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:31:51,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:31:51,528 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:31:51,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-08-19 03:31:51,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e0f13bb/11ee793fc3f544ce90823f03d1ad4aa0/FLAGc85a62f61 [2020-08-19 03:31:52,098 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:31:52,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-08-19 03:31:52,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e0f13bb/11ee793fc3f544ce90823f03d1ad4aa0/FLAGc85a62f61 [2020-08-19 03:31:52,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e0f13bb/11ee793fc3f544ce90823f03d1ad4aa0 [2020-08-19 03:31:52,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:31:52,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:31:52,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:31:52,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:31:52,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:31:52,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:31:52" (1/1) ... [2020-08-19 03:31:52,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0bc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:52, skipping insertion in model container [2020-08-19 03:31:52,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:31:52" (1/1) ... [2020-08-19 03:31:52,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:31:52,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:31:52,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:31:52,858 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:31:52,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:31:53,007 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:31:53,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53 WrapperNode [2020-08-19 03:31:53,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:31:53,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:31:53,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:31:53,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:31:53,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (1/1) ... [2020-08-19 03:31:53,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:31:53,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:31:53,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:31:53,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:31:53,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (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 03:31:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:31:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:31:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-19 03:31:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-19 03:31:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:31:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:31:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 03:31:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-19 03:31:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:31:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 03:31:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:31:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:31:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:31:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 03:31:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-19 03:31:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:31:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:31:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:31:53,528 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:31:53,528 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-19 03:31:53,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:31:53 BoogieIcfgContainer [2020-08-19 03:31:53,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:31:53,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:31:53,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:31:53,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:31:53,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:31:52" (1/3) ... [2020-08-19 03:31:53,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2057fd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:31:53, skipping insertion in model container [2020-08-19 03:31:53,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:53" (2/3) ... [2020-08-19 03:31:53,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2057fd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:31:53, skipping insertion in model container [2020-08-19 03:31:53,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:31:53" (3/3) ... [2020-08-19 03:31:53,542 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-08-19 03:31:53,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:31:53,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:31:53,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:31:53,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:31:53,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:31:53,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:31:53,596 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:31:53,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:31:53,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:31:53,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:31:53,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:31:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-08-19 03:31:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 03:31:53,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:53,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:31:53,625 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:53,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1180629641, now seen corresponding path program 1 times [2020-08-19 03:31:53,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:53,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59678150] [2020-08-19 03:31:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:31:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:31:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:31:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:53,887 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 03:31:53,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59678150] [2020-08-19 03:31:53,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:31:53,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:31:53,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092241126] [2020-08-19 03:31:53,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:31:53,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:31:53,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:31:53,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:31:53,918 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-08-19 03:31:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:31:54,160 INFO L93 Difference]: Finished difference Result 90 states and 129 transitions. [2020-08-19 03:31:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:31:54,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 03:31:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:31:54,174 INFO L225 Difference]: With dead ends: 90 [2020-08-19 03:31:54,174 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 03:31:54,178 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 [2020-08-19 03:31:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 03:31:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-19 03:31:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 03:31:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-08-19 03:31:54,227 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 23 [2020-08-19 03:31:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:31:54,228 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-08-19 03:31:54,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:31:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-08-19 03:31:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:31:54,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:54,230 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] [2020-08-19 03:31:54,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:31:54,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:54,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1073387569, now seen corresponding path program 1 times [2020-08-19 03:31:54,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:54,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756177204] [2020-08-19 03:31:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:31:54,331 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:31:54,331 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:31:54,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:31:54,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:31:54 BoogieIcfgContainer [2020-08-19 03:31:54,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:31:54,357 INFO L168 Benchmark]: Toolchain (without parser) took 1817.45 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 105.8 MB in the beginning and 105.9 MB in the end (delta: -162.8 kB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:54,358 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:31:54,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.06 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 105.4 MB in the beginning and 180.9 MB in the end (delta: -75.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:54,360 INFO L168 Benchmark]: Boogie Preprocessor took 50.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.9 MB in the beginning and 179.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:54,361 INFO L168 Benchmark]: RCFGBuilder took 473.39 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 155.7 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:54,362 INFO L168 Benchmark]: TraceAbstraction took 820.64 ms. Allocated memory is still 203.9 MB. Free memory was 155.1 MB in the beginning and 105.9 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:54,366 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 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 468.06 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 105.4 MB in the beginning and 180.9 MB in the end (delta: -75.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.9 MB in the beginning and 179.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.39 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 155.7 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 820.64 ms. Allocated memory is still 203.9 MB. Free memory was 155.1 MB in the beginning and 105.9 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 107]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 27, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L101] float x = 1.0f / 0.0f; [L103] CALL, EXPR __ieee754_sqrtf(x) [L15] float z; [L16] __uint32_t r, hx; [L17] __int32_t ix, s, q, m, t, i; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (ix) = gf_u.word [L24] hx = ix & 0x7fffffff [L26] COND TRUE !((hx) < 0x7f800000L) [L27] return x * x + x; [L103] RET, EXPR __ieee754_sqrtf(x) [L103] float res = __ieee754_sqrtf(x); [L106] CALL, EXPR isinf_float(res) [L83] __int32_t ix; [L85] ieee_float_shape_type gf_u; [L86] gf_u.value = (x) [L87] EXPR gf_u.word [L87] (ix) = gf_u.word [L89] ix &= 0x7fffffff [L90] return ((ix) == 0x7f800000L); [L106] RET, EXPR isinf_float(res) [L106] COND TRUE !isinf_float(res) [L107] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 48 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=49occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1342 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...