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/loop-floats-scientific-comp/loop3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:20,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:20,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:20,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:45:20,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:45:20,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:45:20,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:45:20,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:45:20,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:45:20,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:45:20,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:45:20,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:45:20,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:45:20,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:45:20,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:45:20,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:45:20,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:45:20,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:45:20,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:45:20,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:45:20,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:45:20,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:45:20,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:45:20,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:45:20,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:45:20,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:45:20,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:45:20,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:45:20,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:45:20,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:45:20,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:20,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:20,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:20,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:20,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:20,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:20,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:20,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:20,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:20,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:20,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:20,890 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 01:45:20,905 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:20,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:20,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:20,905 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:20,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:20,906 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:20,906 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:20,907 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:20,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:20,907 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:20,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:20,908 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:20,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:20,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:20,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:20,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:20,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:20,909 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:20,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:20,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:20,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:20,910 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:20,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:20,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:20,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:20,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:20,911 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:20,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:20,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:20,912 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:20,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:20,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:20,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:20,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:20,958 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:20,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop3.c [2019-09-10 01:45:21,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb6c0a19/e26842b1bc7f473b9b92aca9017c0c02/FLAG7cd048715 [2019-09-10 01:45:21,473 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:21,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop3.c [2019-09-10 01:45:21,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb6c0a19/e26842b1bc7f473b9b92aca9017c0c02/FLAG7cd048715 [2019-09-10 01:45:21,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb6c0a19/e26842b1bc7f473b9b92aca9017c0c02 [2019-09-10 01:45:21,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:21,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:21,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:21,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:21,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:21,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:21" (1/1) ... [2019-09-10 01:45:21,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef6a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:21, skipping insertion in model container [2019-09-10 01:45:21,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:21" (1/1) ... [2019-09-10 01:45:21,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:21,918 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:22,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:22,111 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:22,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:22,229 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:22,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22 WrapperNode [2019-09-10 01:45:22,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:22,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:22,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:22,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:22,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (1/1) ... [2019-09-10 01:45:22,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:22,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:22,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:22,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:22,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (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 01:45:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:45:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:22,538 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:22,538 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:45:22,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:22 BoogieIcfgContainer [2019-09-10 01:45:22,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:22,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:22,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:22,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:22,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:21" (1/3) ... [2019-09-10 01:45:22,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699d6f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:22, skipping insertion in model container [2019-09-10 01:45:22,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:22" (2/3) ... [2019-09-10 01:45:22,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699d6f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:22, skipping insertion in model container [2019-09-10 01:45:22,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:22" (3/3) ... [2019-09-10 01:45:22,562 INFO L109 eAbstractionObserver]: Analyzing ICFG loop3.c [2019-09-10 01:45:22,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:22,595 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:22,637 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:22,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:22,667 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:22,667 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:22,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:22,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:22,668 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:22,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:22,668 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-10 01:45:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-10 01:45:22,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:22,697 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:22,703 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash 23164375, now seen corresponding path program 1 times [2019-09-10 01:45:22,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:22,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:22,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:22,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:22,761 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:22,827 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 01:45:22,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:22,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:45:22,829 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:22,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:22,845 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-10 01:45:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:22,859 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-10 01:45:22,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:22,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-10 01:45:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:22,870 INFO L225 Difference]: With dead ends: 22 [2019-09-10 01:45:22,871 INFO L226 Difference]: Without dead ends: 15 [2019-09-10 01:45:22,873 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 01:45:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-10 01:45:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-10 01:45:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-10 01:45:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-10 01:45:22,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-09-10 01:45:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:22,908 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-10 01:45:22,909 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-10 01:45:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:45:22,910 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:22,910 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:22,910 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:22,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2126491567, now seen corresponding path program 1 times [2019-09-10 01:45:22,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:22,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:22,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:22,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:22,913 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:22,923 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:45:22,923 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:45:22,923 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 01:45:22,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:22,948 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:45:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:22,971 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:45:22,972 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:45:22,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:45:22,972 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 01:45:22,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:22,988 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 01:45:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:23,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-10 01:45:23,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:45:23,049 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 01:45:23,049 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:45:23,086 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 01:45:23,092 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:23,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-09-10 01:45:23,093 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:23,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:45:23,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:45:23,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:45:23,095 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2019-09-10 01:45:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:23,118 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-09-10 01:45:23,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:45:23,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-10 01:45:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:23,120 INFO L225 Difference]: With dead ends: 18 [2019-09-10 01:45:23,120 INFO L226 Difference]: Without dead ends: 18 [2019-09-10 01:45:23,122 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:45:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-10 01:45:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-09-10 01:45:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-10 01:45:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-10 01:45:23,126 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-10 01:45:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:23,127 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-10 01:45:23,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:45:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-10 01:45:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:45:23,128 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:23,128 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:23,129 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash -351484205, now seen corresponding path program 1 times [2019-09-10 01:45:23,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:23,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:23,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:23,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:23,131 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:23,138 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:45:23,138 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:45:23,139 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 01:45:23,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:23,162 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 01:45:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-09-10 01:45:23,182 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-09-10 01:45:23,182 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:45:23,201 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-09-10 01:45:23,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:23 BoogieIcfgContainer [2019-09-10 01:45:23,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:23,205 INFO L168 Benchmark]: Toolchain (without parser) took 1320.84 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 88.2 MB in the beginning and 123.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:23,206 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:45:23,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.90 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 88.0 MB in the beginning and 178.7 MB in the end (delta: -90.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:23,208 INFO L168 Benchmark]: Boogie Preprocessor took 42.14 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 176.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:23,209 INFO L168 Benchmark]: RCFGBuilder took 267.35 ms. Allocated memory is still 200.3 MB. Free memory was 176.4 MB in the beginning and 164.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:23,209 INFO L168 Benchmark]: TraceAbstraction took 661.12 ms. Allocated memory is still 200.3 MB. Free memory was 163.5 MB in the beginning and 123.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:23,213 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.90 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 88.0 MB in the beginning and 178.7 MB in the end (delta: -90.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.14 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 176.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.35 ms. Allocated memory is still 200.3 MB. Free memory was 176.4 MB in the beginning and 164.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 661.12 ms. Allocated memory is still 200.3 MB. Free memory was 163.5 MB in the beginning and 123.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: 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: [L10] float pi = 3.14159 ; [L16] float x = __VERIFIER_nondet_float() ; [L17] float octant1 = 0 ; [L18] float octant2 = pi/8 ; [L20] float oddExp = x ; [L21] float evenExp = 1.0 ; [L22] float term = x ; [L23] unsigned int count = 2 ; [L24] int multFactor = 0 ; [L25] int temp ; [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] EXPR (count>>1 % 2 == 0) ? 1 : -1 [L30] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L32] evenExp = evenExp + multFactor*term [L34] count++ [L36] term = term * (x/count) [L38] oddExp = oddExp + multFactor*term [L40] count++ [L42] temp = __VERIFIER_nondet_int() [L43] COND TRUE temp == 0 [L46] CALL __VERIFIER_assert( evenExp >= oddExp ) [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 646 SizeOfPredicates, 1 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...