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_Newton-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:35:36,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:35:36,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:35:36,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:35:36,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:35:36,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:35:36,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:35:36,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:35:36,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:35:36,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:35:36,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:35:36,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:35:36,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:35:36,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:35:36,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:35:36,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:35:36,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:35:36,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:35:36,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:35:36,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:35:36,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:35:36,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:35:36,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:35:36,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:35:36,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:35:36,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:35:36,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:35:36,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:35:36,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:35:36,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:35:36,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:35:36,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:35:36,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:35:36,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:35:36,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:35:36,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:35:36,166 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 01:35:36,181 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:35:36,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:35:36,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:35:36,182 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:35:36,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:35:36,183 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:35:36,183 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:35:36,183 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:35:36,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:35:36,183 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:35:36,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:35:36,184 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:35:36,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:35:36,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:35:36,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:35:36,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:35:36,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:35:36,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:35:36,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:35:36,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:35:36,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:35:36,186 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:35:36,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:35:36,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:35:36,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:35:36,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:35:36,187 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:35:36,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:35:36,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:35:36,188 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:35:36,222 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:35:36,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:35:36,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:35:36,239 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:35:36,240 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:35:36,240 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_Newton-2.c [2019-09-10 01:35:36,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915f81095/b0d88343a12341ccb99d4018e22a5e73/FLAGd0b906176 [2019-09-10 01:35:36,721 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:35:36,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_Newton-2.c [2019-09-10 01:35:36,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915f81095/b0d88343a12341ccb99d4018e22a5e73/FLAGd0b906176 [2019-09-10 01:35:37,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915f81095/b0d88343a12341ccb99d4018e22a5e73 [2019-09-10 01:35:37,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:35:37,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:35:37,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:35:37,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:35:37,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:35:37,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d455d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37, skipping insertion in model container [2019-09-10 01:35:37,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,150 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:35:37,166 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:35:37,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:35:37,365 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:35:37,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:35:37,508 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:35:37,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37 WrapperNode [2019-09-10 01:35:37,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:35:37,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:35:37,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:35:37,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:35:37,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (1/1) ... [2019-09-10 01:35:37,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:35:37,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:35:37,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:35:37,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:35:37,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (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 01:35:37,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:35:37,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:35:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:35:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2019-09-10 01:35:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:35:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:35:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-10 01:35:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:35:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:35:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2019-09-10 01:35:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:35:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:35:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:35:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:35:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:35:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:35:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:35:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:35:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:35:37,931 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:35:37,932 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:35:37,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:35:37 BoogieIcfgContainer [2019-09-10 01:35:37,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:35:37,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:35:37,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:35:37,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:35:37,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:35:37" (1/3) ... [2019-09-10 01:35:37,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2838c2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:35:37, skipping insertion in model container [2019-09-10 01:35:37,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:37" (2/3) ... [2019-09-10 01:35:37,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2838c2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:35:37, skipping insertion in model container [2019-09-10 01:35:37,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:35:37" (3/3) ... [2019-09-10 01:35:37,940 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_Newton-2.c [2019-09-10 01:35:37,947 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:35:37,954 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:35:37,970 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:35:37,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:35:37,995 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:35:37,996 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:35:37,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:35:37,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:35:37,996 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:35:37,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:35:37,996 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:35:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-10 01:35:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:35:38,016 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:38,017 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:38,019 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash 940128396, now seen corresponding path program 1 times [2019-09-10 01:35:38,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:38,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:38,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:38,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:38,065 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:35:38,175 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 01:35:38,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:35:38,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:35:38,177 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:35:38,182 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:35:38,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:35:38,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:35:38,200 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-10 01:35:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:35:38,217 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-09-10 01:35:38,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:35:38,219 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-10 01:35:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:35:38,228 INFO L225 Difference]: With dead ends: 25 [2019-09-10 01:35:38,228 INFO L226 Difference]: Without dead ends: 18 [2019-09-10 01:35:38,230 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:35:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-10 01:35:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-10 01:35:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-10 01:35:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-10 01:35:38,270 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 17 [2019-09-10 01:35:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:35:38,271 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-10 01:35:38,271 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:35:38,271 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-10 01:35:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:35:38,272 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:38,272 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:38,273 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash -419988344, now seen corresponding path program 1 times [2019-09-10 01:35:38,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:38,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:38,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:38,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:38,276 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:35:38,414 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 01:35:38,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:35:38,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:35:38,415 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:35:38,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:35:38,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:35:38,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:35:38,421 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2019-09-10 01:35:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:35:38,442 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-10 01:35:38,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:35:38,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-10 01:35:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:35:38,444 INFO L225 Difference]: With dead ends: 19 [2019-09-10 01:35:38,444 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:35:38,446 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:35:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:35:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:35:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:35:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-09-10 01:35:38,455 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2019-09-10 01:35:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:35:38,456 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-09-10 01:35:38,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:35:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-09-10 01:35:38,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:35:38,459 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:38,459 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:38,459 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2109082777, now seen corresponding path program 1 times [2019-09-10 01:35:38,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:38,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:38,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:38,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:38,463 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:38,519 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:35:38,520 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:35:38,520 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 01:35:38,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:38,541 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:35:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-09-10 01:35:38,580 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-09-10 01:35:38,580 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:35:38,600 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-09-10 01:35:38,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:35:38 BoogieIcfgContainer [2019-09-10 01:35:38,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:35:38,604 INFO L168 Benchmark]: Toolchain (without parser) took 1468.23 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 91.3 MB in the beginning and 125.7 MB in the end (delta: -34.5 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:38,605 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:35:38,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.95 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 91.1 MB in the beginning and 178.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:38,607 INFO L168 Benchmark]: Boogie Preprocessor took 46.27 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 176.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:38,608 INFO L168 Benchmark]: RCFGBuilder took 376.85 ms. Allocated memory is still 201.3 MB. Free memory was 176.0 MB in the beginning and 160.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:38,609 INFO L168 Benchmark]: TraceAbstraction took 667.55 ms. Allocated memory is still 201.3 MB. Free memory was 159.9 MB in the beginning and 125.7 MB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:38,613 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.95 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 91.1 MB in the beginning and 178.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.27 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 176.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.85 ms. Allocated memory is still 201.3 MB. Free memory was 176.0 MB in the beginning and 160.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 667.55 ms. Allocated memory is still 201.3 MB. Free memory was 159.9 MB in the beginning and 125.7 MB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: 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, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L48] double a,r; [L50] a = __VERIFIER_nondet_double() [L53] CALL, EXPR inv(a) [L28] double xi, xsi, temp; [L29] signed int cond, exp; [L30] union double_int A_u, xi_u; [L31] A_u.d = A [L32] EXPR A_u.i [L32] exp = (signed int) ((A_u.i & 0x7FF00000) >> 20) - 1023 [L33] xi_u.d = 1 [L34] xi_u.i = ((1023-exp) << 20) [L35] EXPR xi_u.d [L35] xi = xi_u.d [L36] cond = 1 [L37] COND TRUE \read(cond) [L38] xsi = 2*xi-A*xi*xi [L39] temp = xsi-xi [L40] cond = ((temp > 1e-10) || (temp < -1e-10)) [L41] xi = xsi [L37] COND FALSE !(\read(cond)) [L43] return xi; [L43] return xi; [L43] return xi; [L53] RET, EXPR inv(a) [L53] r = inv(a) [L55] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) [L18] COND TRUE !(cond) [L18] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...