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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:35:41,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:35:41,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:35:41,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:35:41,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:35:41,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:35:41,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:35:41,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:35:41,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:35:41,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:35:41,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:35:41,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:35:41,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:35:41,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:35:41,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:35:41,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:35:41,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:35:41,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:35:41,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:35:41,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:35:41,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:35:41,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:35:41,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:35:41,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:35:41,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:35:41,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:35:41,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:35:41,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:35:41,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:35:41,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:35:41,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:35:41,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:35:41,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:35:41,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:35:41,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:35:41,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:35:41,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:35:41,134 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:35:41,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:35:41,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:35:41,135 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:35:41,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:35:41,136 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:35:41,136 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:35:41,136 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:35:41,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:35:41,137 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:35:41,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:35:41,138 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:35:41,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:35:41,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:35:41,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:35:41,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:35:41,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:35:41,139 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:35:41,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:35:41,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:35:41,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:35:41,140 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:35:41,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:35:41,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:35:41,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:35:41,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:35:41,141 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:35:41,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:35:41,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:35:41,141 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:35:41,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:35:41,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:35:41,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:35:41,212 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:35:41,213 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:35:41,214 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2019-09-10 01:35:41,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012fda1ea/72574986fd9f4edb9b716ec374b555cf/FLAGf05310bef [2019-09-10 01:35:41,723 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:35:41,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2019-09-10 01:35:41,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012fda1ea/72574986fd9f4edb9b716ec374b555cf/FLAGf05310bef [2019-09-10 01:35:42,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012fda1ea/72574986fd9f4edb9b716ec374b555cf [2019-09-10 01:35:42,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:35:42,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:35:42,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:35:42,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:35:42,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:35:42,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779b0c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42, skipping insertion in model container [2019-09-10 01:35:42,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,130 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:35:42,149 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:35:42,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:35:42,355 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:35:42,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:35:42,482 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:35:42,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42 WrapperNode [2019-09-10 01:35:42,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:35:42,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:35:42,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:35:42,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:35:42,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... [2019-09-10 01:35:42,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:35:42,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:35:42,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:35:42,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:35:42,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-10 01:35:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:35:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:35:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure InvSqrt [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:35:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:35:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:35:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:35:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:35:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:35:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:35:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:35:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:35:42,804 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:35:42,805 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:35:42,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:35:42 BoogieIcfgContainer [2019-09-10 01:35:42,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:35:42,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:35:42,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:35:42,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:35:42,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:35:42" (1/3) ... [2019-09-10 01:35:42,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4566fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:35:42, skipping insertion in model container [2019-09-10 01:35:42,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:42" (2/3) ... [2019-09-10 01:35:42,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4566fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:35:42, skipping insertion in model container [2019-09-10 01:35:42,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:35:42" (3/3) ... [2019-09-10 01:35:42,835 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2019-09-10 01:35:42,861 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:35:42,876 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:35:42,905 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:35:42,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:35:42,936 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:35:42,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:35:42,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:35:42,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:35:42,937 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:35:42,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:35:42,937 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:35:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-10 01:35:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:35:42,964 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:42,965 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:42,966 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:42,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1709792353, now seen corresponding path program 1 times [2019-09-10 01:35:42,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:43,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:43,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:43,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:43,017 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:43,065 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:35:43,065 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:35:43,065 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:35:43,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:43,077 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:35:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:35:43,123 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:35:43,125 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:35:43,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:35:43,125 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:35:43,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:43,141 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:35:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:35:43,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 01:35:43,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:35:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:35:43,225 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:35:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:35:43,255 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:35:43,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-10 01:35:43,256 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:35:43,261 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:35:43,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:35:43,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:35:43,279 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-09-10 01:35:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:35:43,355 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-09-10 01:35:43,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:35:43,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-10 01:35:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:35:43,369 INFO L225 Difference]: With dead ends: 24 [2019-09-10 01:35:43,370 INFO L226 Difference]: Without dead ends: 16 [2019-09-10 01:35:43,373 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:35:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-10 01:35:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-10 01:35:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-10 01:35:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-09-10 01:35:43,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2019-09-10 01:35:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:35:43,415 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-09-10 01:35:43,415 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:35:43,416 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-09-10 01:35:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:35:43,417 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:43,417 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:43,417 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:43,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1724896390, now seen corresponding path program 1 times [2019-09-10 01:35:43,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:43,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:43,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:43,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:43,420 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:43,453 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:35:43,453 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:35:43,454 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-10 01:35:43,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:43,472 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:35:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Exception during sending of exit command (exit): Stream closed [2019-09-10 01:35:43,497 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-09-10 01:35:43,498 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:35:43,524 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-09-10 01:35:43,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:35:43 BoogieIcfgContainer [2019-09-10 01:35:43,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:35:43,530 INFO L168 Benchmark]: Toolchain (without parser) took 1411.80 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.5 MB in the beginning and 115.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:43,532 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:35:43,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.33 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.3 MB in the beginning and 175.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:43,536 INFO L168 Benchmark]: Boogie Preprocessor took 30.98 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 173.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:43,537 INFO L168 Benchmark]: RCFGBuilder took 291.38 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 158.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:43,537 INFO L168 Benchmark]: TraceAbstraction took 707.92 ms. Allocated memory is still 199.2 MB. Free memory was 157.7 MB in the beginning and 115.5 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:43,541 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.33 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.3 MB in the beginning and 175.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.98 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 173.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.38 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 158.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 707.92 ms. Allocated memory is still 199.2 MB. Free memory was 157.7 MB in the beginning and 115.5 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 54]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L12] float __return_72; [L13] int __return_87; [L16] float main__a; [L17] float main__r; [L18] main__a = __VERIFIER_nondet_float() [L19] int main____CPAchecker_TMP_0; [L20] COND TRUE main__a >= 0.10000000149011612 [L22] COND TRUE main__a <= 100.0 [L24] main____CPAchecker_TMP_0 = 1 [L25] COND TRUE main____CPAchecker_TMP_0 != 0 [L28] float __tmp_1; [L29] __tmp_1 = main__a [L30] float InvSqrt__x; [L31] InvSqrt__x = __tmp_1 [L32] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L33] union float_int InvSqrt__i; [L34] InvSqrt__i.f = InvSqrt__x [L35] EXPR InvSqrt__i.i [L35] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L36] EXPR InvSqrt__i.f [L36] InvSqrt__x = InvSqrt__i.f [L37] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L38] __return_72 = InvSqrt__x [L39] main__r = __return_72 [L40] int main____CPAchecker_TMP_1; [L41] COND FALSE !(main__r >= 0.0) [L67] main____CPAchecker_TMP_1 = 0 [L48] int __tmp_2; [L49] __tmp_2 = main____CPAchecker_TMP_1 [L50] int __VERIFIER_assert__cond; [L51] __VERIFIER_assert__cond = __tmp_2 [L52] COND TRUE __VERIFIER_assert__cond == 0 [L54] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 5 SDslu, 43 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 3 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...