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/Muller_Kahan.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:30:24,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:30:24,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:30:24,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:30:24,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:30:24,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:30:24,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:30:24,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:30:24,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:30:24,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:30:24,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:30:24,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:30:24,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:30:24,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:30:24,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:30:24,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:30:24,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:30:24,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:30:24,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:30:24,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:30:24,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:30:24,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:30:24,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:30:24,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:30:24,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:30:24,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:30:24,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:30:24,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:30:24,805 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 01:30:24,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:30:24,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:30:24,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:30:24,831 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:30:24,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:30:24,832 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:30:24,832 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:30:24,832 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:30:24,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:30:24,833 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:30:24,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:30:24,835 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:30:24,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:30:24,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:30:24,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:30:24,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:30:24,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:30:24,837 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:30:24,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:30:24,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:30:24,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:30:24,838 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:30:24,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:30:24,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:30:24,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:30:24,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:30:24,839 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:30:24,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:30:24,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:30:24,839 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:30:24,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:30:24,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:30:24,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:30:24,912 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:30:24,913 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:30:24,913 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/Muller_Kahan.c [2019-09-10 01:30:24,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187745568/f48553f285cf4cd2840c32522f24ef97/FLAG2453d8a29 [2019-09-10 01:30:25,350 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:30:25,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/Muller_Kahan.c [2019-09-10 01:30:25,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187745568/f48553f285cf4cd2840c32522f24ef97/FLAG2453d8a29 [2019-09-10 01:30:25,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187745568/f48553f285cf4cd2840c32522f24ef97 [2019-09-10 01:30:25,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:30:25,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:30:25,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:30:25,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:30:25,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:30:25,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:30:25" (1/1) ... [2019-09-10 01:30:25,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ff9303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:25, skipping insertion in model container [2019-09-10 01:30:25,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:30:25" (1/1) ... [2019-09-10 01:30:25,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:30:25,814 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:30:25,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:30:25,975 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:30:25,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:30:25,999 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:30:26,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26 WrapperNode [2019-09-10 01:30:26,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:30:26,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:30:26,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:30:26,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:30:26,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (1/1) ... [2019-09-10 01:30:26,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:30:26,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:30:26,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:30:26,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:30:26,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (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 01:30:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:30:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:30:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:30:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:30:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:30:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:30:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:30:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:30:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:30:26,305 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:30:26,305 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:30:26,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:30:26 BoogieIcfgContainer [2019-09-10 01:30:26,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:30:26,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:30:26,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:30:26,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:30:26,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:30:25" (1/3) ... [2019-09-10 01:30:26,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6136b8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:30:26, skipping insertion in model container [2019-09-10 01:30:26,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:30:26" (2/3) ... [2019-09-10 01:30:26,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6136b8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:30:26, skipping insertion in model container [2019-09-10 01:30:26,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:30:26" (3/3) ... [2019-09-10 01:30:26,314 INFO L109 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c [2019-09-10 01:30:26,323 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:30:26,332 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:30:26,349 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:30:26,370 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:30:26,370 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:30:26,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:30:26,370 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:30:26,370 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:30:26,371 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:30:26,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:30:26,371 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:30:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-10 01:30:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-10 01:30:26,392 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:30:26,393 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:30:26,395 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:30:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:30:26,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2019-09-10 01:30:26,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:30:26,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:30:26,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:30:26,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:30:26,447 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:30:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:30:26,495 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 01:30:26,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:30:26,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:30:26,497 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:30:26,501 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:30:26,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:30:26,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:30:26,518 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-10 01:30:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:30:26,532 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-10 01:30:26,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:30:26,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-10 01:30:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:30:26,542 INFO L225 Difference]: With dead ends: 19 [2019-09-10 01:30:26,542 INFO L226 Difference]: Without dead ends: 12 [2019-09-10 01:30:26,544 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 01:30:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-10 01:30:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-10 01:30:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-10 01:30:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-10 01:30:26,576 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-09-10 01:30:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:30:26,577 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-10 01:30:26,577 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:30:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-10 01:30:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-10 01:30:26,578 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:30:26,578 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:30:26,578 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:30:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:30:26,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2019-09-10 01:30:26,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:30:26,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:30:26,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:30:26,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:30:26,580 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:30:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:30:26,627 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 01:30:26,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:30:26,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:30:26,628 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:30:26,631 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:30:26,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:30:26,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:30:26,632 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-09-10 01:30:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:30:26,673 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-09-10 01:30:26,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:30:26,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-09-10 01:30:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:30:26,675 INFO L225 Difference]: With dead ends: 13 [2019-09-10 01:30:26,676 INFO L226 Difference]: Without dead ends: 13 [2019-09-10 01:30:26,677 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 01:30:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-10 01:30:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-10 01:30:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-10 01:30:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-10 01:30:26,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-09-10 01:30:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:30:26,681 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-10 01:30:26,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:30:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-10 01:30:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-10 01:30:26,682 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:30:26,682 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:30:26,683 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:30:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:30:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2019-09-10 01:30:26,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:30:26,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:30:26,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:30:26,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:30:26,685 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:30:26,690 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:30:26,691 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:30:26,691 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) [2019-09-10 01:30:26,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:30:26,744 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:30:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:30:26,756 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2019-09-10 01:30:26,758 INFO L207 CegarAbsIntRunner]: [0], [4], [10], [12], [14], [21], [24], [26], [32], [33], [34], [36] [2019-09-10 01:30:26,781 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result. at java.math.BigDecimal.divide(BigDecimal.java:1693) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.util.AbsIntUtil.sanitizeBigDecimalValue(AbsIntUtil.java:483) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.rcfg.RCFGLiteralCollector$StatementLiteralCollector.visit(RCFGLiteralCollector.java:202) at de.uni_freiburg.informatik.ultimate.boogie.BoogieVisitor.processExpression(BoogieVisitor.java:376) at de.uni_freiburg.informatik.ultimate.boogie.BoogieTransformer.processExpressions(BoogieTransformer.java:674) at de.uni_freiburg.informatik.ultimate.boogie.BoogieTransformer.processStatement(BoogieTransformer.java:373) at de.uni_freiburg.informatik.ultimate.boogie.BoogieVisitor.processStatement(BoogieVisitor.java:213) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.rcfg.RCFGLiteralCollector$StatementLiteralCollector.processStatement(RCFGLiteralCollector.java:162) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.rcfg.RCFGLiteralCollector.visit(RCFGLiteralCollector.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.util.RCFGEdgeVisitor.visit(RCFGEdgeVisitor.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.util.RCFGEdgeVisitor.visit(RCFGEdgeVisitor.java:52) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.rcfg.RCFGLiteralCollector.process(RCFGLiteralCollector.java:106) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.rcfg.RCFGLiteralCollector.(RCFGLiteralCollector.java:79) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.lambda$1(AbstractInterpreter.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.initializer.FixpointEngineParameterFactory.getFlatDomainOrNull(FixpointEngineParameterFactory.java:193) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.initializer.FixpointEngineParameterFactory.selectDomain(FixpointEngineParameterFactory.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.initializer.FixpointEngineParameterFactory.createParams(FixpointEngineParameterFactory.java:123) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:382) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2019-09-10 01:30:26,790 INFO L168 Benchmark]: Toolchain (without parser) took 1003.10 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 91.7 MB in the beginning and 138.9 MB in the end (delta: -47.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:30:26,791 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory is still 109.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:30:26,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.87 ms. Allocated memory is still 135.3 MB. Free memory was 91.3 MB in the beginning and 82.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:30:26,795 INFO L168 Benchmark]: Boogie Preprocessor took 120.85 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 82.3 MB in the beginning and 178.0 MB in the end (delta: -95.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:30:26,796 INFO L168 Benchmark]: RCFGBuilder took 184.54 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 167.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:30:26,797 INFO L168 Benchmark]: TraceAbstraction took 479.90 ms. Allocated memory is still 201.3 MB. Free memory was 166.5 MB in the beginning and 138.9 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:30:26,804 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory is still 109.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 213.87 ms. Allocated memory is still 135.3 MB. Free memory was 91.3 MB in the beginning and 82.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.85 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 82.3 MB in the beginning and 178.0 MB in the end (delta: -95.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 184.54 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 167.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 479.90 ms. Allocated memory is still 201.3 MB. Free memory was 166.5 MB in the beginning and 138.9 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...