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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/freire1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:28:07,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:28:07,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:28:07,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 12:28:07,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 12:28:07,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 12:28:07,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 12:28:07,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 12:28:07,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 12:28:07,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 12:28:07,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 12:28:07,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 12:28:07,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:28:07,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:28:07,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:28:07,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:28:07,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:28:07,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:28:07,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:28:07,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:28:07,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:28:07,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:28:07,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:28:07,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:28:07,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:28:07,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:28:07,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:28:07,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:28:07,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-05 12:28:07,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:28:07,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:28:07,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 12:28:07,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 12:28:07,829 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 12:28:07,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:28:07,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:28:07,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 12:28:07,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:28:07,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:28:07,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:28:07,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:28:07,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:28:07,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:28:07,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:28:07,832 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 12:28:07,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:28:07,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:28:07,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:28:07,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 12:28:07,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 12:28:07,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:28:07,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:28:07,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:28:07,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 12:28:07,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 12:28:07,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:28:07,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:28:07,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 12:28:07,866 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:28:07,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:28:07,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:28:07,883 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:28:07,884 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:28:07,884 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire1.c [2019-09-05 12:28:07,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a8c4d93/0dda195853354e8abadde3bbc14c3dd7/FLAGd89e24311 [2019-09-05 12:28:08,365 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:28:08,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c [2019-09-05 12:28:08,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a8c4d93/0dda195853354e8abadde3bbc14c3dd7/FLAGd89e24311 [2019-09-05 12:28:08,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a8c4d93/0dda195853354e8abadde3bbc14c3dd7 [2019-09-05 12:28:08,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:28:08,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:28:08,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:28:08,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:28:08,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:28:08,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:28:08" (1/1) ... [2019-09-05 12:28:08,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb25d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:08, skipping insertion in model container [2019-09-05 12:28:08,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:28:08" (1/1) ... [2019-09-05 12:28:08,838 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:28:08,858 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:28:09,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:28:09,094 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:28:09,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:28:09,136 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:28:09,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09 WrapperNode [2019-09-05 12:28:09,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:28:09,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:28:09,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:28:09,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:28:09,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (1/1) ... [2019-09-05 12:28:09,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:28:09,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:28:09,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:28:09,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:28:09,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (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 [2019-09-05 12:28:09,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:28:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:28:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:28:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:28:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:28:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-05 12:28:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 12:28:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:28:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:28:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:28:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:28:09,494 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:28:09,494 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:28:09,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:28:09 BoogieIcfgContainer [2019-09-05 12:28:09,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:28:09,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:28:09,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:28:09,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:28:09,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:28:08" (1/3) ... [2019-09-05 12:28:09,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7a1b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:28:09, skipping insertion in model container [2019-09-05 12:28:09,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:09" (2/3) ... [2019-09-05 12:28:09,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7a1b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:28:09, skipping insertion in model container [2019-09-05 12:28:09,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:28:09" (3/3) ... [2019-09-05 12:28:09,503 INFO L109 eAbstractionObserver]: Analyzing ICFG freire1.c [2019-09-05 12:28:09,513 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:28:09,520 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:28:09,535 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:28:09,562 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 12:28:09,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:28:09,563 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 12:28:09,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:28:09,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:28:09,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:28:09,563 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:28:09,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:28:09,564 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:28:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-05 12:28:09,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:28:09,582 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:09,583 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:09,585 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:09,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-05 12:28:09,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:09,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:09,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:28:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:28:09,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:28:09,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:28:09,690 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:28:09,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:28:09,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:28:09,703 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-05 12:28:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:09,721 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-05 12:28:09,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:28:09,723 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 12:28:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:09,731 INFO L225 Difference]: With dead ends: 35 [2019-09-05 12:28:09,731 INFO L226 Difference]: Without dead ends: 15 [2019-09-05 12:28:09,734 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 [2019-09-05 12:28:09,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-05 12:28:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-05 12:28:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-05 12:28:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-05 12:28:09,768 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-05 12:28:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:09,768 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-05 12:28:09,768 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:28:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-05 12:28:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:28:09,769 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:09,770 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:09,770 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-05 12:28:09,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:09,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:09,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:09,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:09,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 12:28:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 12:28:09,805 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-05 12:28:09,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:28:09 BoogieIcfgContainer [2019-09-05 12:28:09,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:28:09,826 INFO L168 Benchmark]: Toolchain (without parser) took 1003.09 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 85.2 MB in the beginning and 143.2 MB in the end (delta: -58.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:09,827 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:28:09,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.26 ms. Allocated memory is still 137.9 MB. Free memory was 84.9 MB in the beginning and 75.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:09,829 INFO L168 Benchmark]: Boogie Preprocessor took 136.62 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 75.4 MB in the beginning and 175.1 MB in the end (delta: -99.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:09,829 INFO L168 Benchmark]: RCFGBuilder took 219.81 ms. Allocated memory is still 198.2 MB. Free memory was 175.1 MB in the beginning and 164.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:09,830 INFO L168 Benchmark]: TraceAbstraction took 326.33 ms. Allocated memory is still 198.2 MB. Free memory was 164.3 MB in the beginning and 143.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:09,834 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.26 ms. Allocated memory is still 137.9 MB. Free memory was 84.9 MB in the beginning and 75.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.62 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 75.4 MB in the beginning and 175.1 MB in the end (delta: -99.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 219.81 ms. Allocated memory is still 198.2 MB. Free memory was 175.1 MB in the beginning and 164.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 326.33 ms. Allocated memory is still 198.2 MB. Free memory was 164.3 MB in the beginning and 143.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23. Possible FailurePath: [L20] int r; [L21] double a, x; [L22] a = __VERIFIER_nondet_double() [L23] x = a / 2.0 [L24] r = 0 VAL [a=1, r=0] [L26] COND TRUE 1 VAL [a=1, r=0] [L27] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...