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/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:28:10,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:28:10,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:28:10,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 12:28:10,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 12:28:10,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 12:28:10,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 12:28:10,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 12:28:10,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 12:28:10,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 12:28:10,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 12:28:10,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 12:28:10,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:28:10,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:28:10,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:28:10,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:28:10,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:28:10,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:28:10,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:28:10,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:28:10,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:28:10,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:28:10,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:28:10,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:28:10,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:28:10,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:28:10,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:28:10,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:28:10,362 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 12:28:10,375 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:28:10,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:28:10,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 12:28:10,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 12:28:10,377 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 12:28:10,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:28:10,377 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:28:10,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 12:28:10,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:28:10,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:28:10,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:28:10,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:28:10,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:28:10,379 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:28:10,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:28:10,379 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 12:28:10,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:28:10,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:28:10,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:28:10,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 12:28:10,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 12:28:10,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:28:10,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:28:10,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:28:10,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 12:28:10,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 12:28:10,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:28:10,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:28:10,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 12:28:10,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:28:10,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:28:10,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:28:10,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:28:10,430 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:28:10,431 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2019-09-05 12:28:10,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70dc1b1db/ceda45efd4a7432e82b1ba93f0f110ff/FLAGbf00f0f73 [2019-09-05 12:28:10,948 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:28:10,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2019-09-05 12:28:10,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70dc1b1db/ceda45efd4a7432e82b1ba93f0f110ff/FLAGbf00f0f73 [2019-09-05 12:28:11,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70dc1b1db/ceda45efd4a7432e82b1ba93f0f110ff [2019-09-05 12:28:11,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:28:11,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:28:11,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:28:11,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:28:11,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:28:11,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c6ac20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11, skipping insertion in model container [2019-09-05 12:28:11,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,367 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:28:11,389 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:28:11,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:28:11,578 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:28:11,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:28:11,621 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:28:11,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11 WrapperNode [2019-09-05 12:28:11,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:28:11,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:28:11,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:28:11,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:28:11,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (1/1) ... [2019-09-05 12:28:11,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:28:11,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:28:11,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:28:11,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:28:11,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (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 12:28:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:28:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:28:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:28:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:28:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:28:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:28:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 12:28:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:28:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:28:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:28:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:28:11,972 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:28:11,973 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:28:11,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:28:11 BoogieIcfgContainer [2019-09-05 12:28:11,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:28:11,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:28:11,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:28:11,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:28:11,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:28:11" (1/3) ... [2019-09-05 12:28:11,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b654f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:28:11, skipping insertion in model container [2019-09-05 12:28:11,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:11" (2/3) ... [2019-09-05 12:28:11,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b654f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:28:11, skipping insertion in model container [2019-09-05 12:28:11,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:28:11" (3/3) ... [2019-09-05 12:28:11,983 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2019-09-05 12:28:11,993 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:28:12,001 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:28:12,027 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:28:12,075 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 12:28:12,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:28:12,076 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 12:28:12,076 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:28:12,077 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:28:12,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:28:12,077 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:28:12,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:28:12,078 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:28:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-05 12:28:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:28:12,109 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:12,110 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:12,112 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash -156194248, now seen corresponding path program 1 times [2019-09-05 12:28:12,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:12,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:12,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:12,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:12,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:12,202 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:28:12,203 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:28:12,203 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-05 12:28:12,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:28:12,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-05 12:28:12,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:28:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-05 12:28:12,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:28:12,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 12:28:12,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 12:28:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 12:28:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:28:12,347 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2019-09-05 12:28:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:12,437 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2019-09-05 12:28:12,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:28:12,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 12:28:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:12,451 INFO L225 Difference]: With dead ends: 45 [2019-09-05 12:28:12,452 INFO L226 Difference]: Without dead ends: 24 [2019-09-05 12:28:12,458 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 12:28:12,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-05 12:28:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-09-05 12:28:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-05 12:28:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-05 12:28:12,499 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-05 12:28:12,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:12,499 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-05 12:28:12,499 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 12:28:12,500 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-05 12:28:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:28:12,501 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:12,501 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:12,501 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:12,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1377881770, now seen corresponding path program 1 times [2019-09-05 12:28:12,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:12,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:12,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:12,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:12,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:12,510 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:28:12,510 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:28:12,510 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-05 12:28:12,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:28:12,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 12:28:12,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:28:12,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 12:28:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:28:12,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:28:12,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-05 12:28:12,691 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 12:28:12,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 12:28:12,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-05 12:28:12,692 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2019-09-05 12:28:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:12,803 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-05 12:28:12,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-05 12:28:12,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-09-05 12:28:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:12,805 INFO L225 Difference]: With dead ends: 22 [2019-09-05 12:28:12,805 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:28:12,806 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-05 12:28:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:28:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:28:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:28:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:28:12,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-05 12:28:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:12,807 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:28:12,808 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 12:28:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:28:12,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:28:12,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-05 12:28:12,852 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-05 12:28:12,853 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:28:12,853 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:28:12,853 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-05 12:28:12,853 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-05 12:28:12,853 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-05 12:28:12,854 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 43) the Hoare annotation is: true [2019-09-05 12:28:12,854 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (= (+ 1 (+ (+ (- main_~x~0) (* main_~z~0 main_~x~0)) (- main_~y~0))) 0) [2019-09-05 12:28:12,854 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 27 37) no Hoare annotation was computed. [2019-09-05 12:28:12,854 INFO L439 ceAbstractionStarter]: At program point L27-2(lines 27 37) the Hoare annotation is: (= (+ 1 (+ (+ (- main_~x~0) (* main_~z~0 main_~x~0)) (- main_~y~0))) 0) [2019-09-05 12:28:12,854 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 43) no Hoare annotation was computed. [2019-09-05 12:28:12,855 INFO L443 ceAbstractionStarter]: For program point L27-3(lines 27 37) no Hoare annotation was computed. [2019-09-05 12:28:12,855 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 43) no Hoare annotation was computed. [2019-09-05 12:28:12,855 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (exists ((v_main_~x~0_12 Int) (main_~z~0 Int)) (and (= (* v_main_~x~0_12 (+ main_~z~0 (- 1))) main_~x~0) (= (+ 1 (+ (+ (- v_main_~x~0_12) (* v_main_~x~0_12 main_~z~0)) (- main_~y~0))) 0))) [2019-09-05 12:28:12,855 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-09-05 12:28:12,855 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2019-09-05 12:28:12,856 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-09-05 12:28:12,856 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-09-05 12:28:12,856 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2019-09-05 12:28:12,856 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2019-09-05 12:28:12,856 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-09-05 12:28:12,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:28:12 BoogieIcfgContainer [2019-09-05 12:28:12,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:28:12,875 INFO L168 Benchmark]: Toolchain (without parser) took 1523.45 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 90.4 MB in the beginning and 112.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:12,877 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 134.2 MB. Free memory was 108.5 MB in the beginning and 108.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:28:12,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.04 ms. Allocated memory is still 134.2 MB. Free memory was 90.2 MB in the beginning and 80.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:12,879 INFO L168 Benchmark]: Boogie Preprocessor took 118.33 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 80.8 MB in the beginning and 176.9 MB in the end (delta: -96.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:12,880 INFO L168 Benchmark]: RCFGBuilder took 232.86 ms. Allocated memory is still 200.3 MB. Free memory was 176.9 MB in the beginning and 165.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:12,881 INFO L168 Benchmark]: TraceAbstraction took 897.20 ms. Allocated memory is still 200.3 MB. Free memory was 165.6 MB in the beginning and 112.1 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:12,885 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 134.2 MB. Free memory was 108.5 MB in the beginning and 108.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.04 ms. Allocated memory is still 134.2 MB. Free memory was 90.2 MB in the beginning and 80.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.33 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 80.8 MB in the beginning and 176.9 MB in the end (delta: -96.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.86 ms. Allocated memory is still 200.3 MB. Free memory was 176.9 MB in the beginning and 165.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 897.20 ms. Allocated memory is still 200.3 MB. Free memory was 165.6 MB in the beginning and 112.1 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 + (-x + z * x + -y) == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 15 SDslu, 90 SDs, 0 SdLazy, 45 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 53 HoareAnnotationTreeSize, 12 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 1 QuantifiedInterpolants, 1393 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...