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/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:13:33,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:13:33,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:13:33,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:13:33,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:13:33,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:13:33,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:13:33,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:13:33,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:13:33,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:13:33,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:13:33,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:13:33,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:13:33,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:13:33,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:13:33,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:13:33,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:13:33,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:13:33,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:13:33,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:13:33,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:13:33,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:13:33,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:13:33,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:13:33,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:13:33,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:13:33,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:13:33,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:13:33,440 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 [2019-09-16 16:13:33,464 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:13:33,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:13:33,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:13:33,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:13:33,468 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:13:33,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:13:33,468 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:13:33,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:13:33,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:13:33,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:13:33,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:13:33,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:13:33,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:13:33,471 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:13:33,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:13:33,472 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:13:33,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:13:33,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:13:33,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:13:33,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:13:33,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:13:33,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:13:33,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:13:33,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:13:33,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:13:33,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:13:33,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:13:33,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:13:33,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:13:33,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:13:33,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:13:33,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:13:33,550 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:13:33,550 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:13:33,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-16 16:13:33,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b615efa73/6552c870545b4e35bfcb398619a89ab8/FLAG22691ac91 [2019-09-16 16:13:34,069 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:13:34,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-16 16:13:34,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b615efa73/6552c870545b4e35bfcb398619a89ab8/FLAG22691ac91 [2019-09-16 16:13:34,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b615efa73/6552c870545b4e35bfcb398619a89ab8 [2019-09-16 16:13:34,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:13:34,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:13:34,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:13:34,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:13:34,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:13:34,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1566f5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34, skipping insertion in model container [2019-09-16 16:13:34,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,481 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:13:34,495 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:13:34,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:13:34,667 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:13:34,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:13:34,694 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:13:34,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34 WrapperNode [2019-09-16 16:13:34,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:13:34,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:13:34,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:13:34,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:13:34,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (1/1) ... [2019-09-16 16:13:34,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:13:34,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:13:34,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:13:34,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:13:34,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (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 [2019-09-16 16:13:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:13:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:13:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:13:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:13:35,034 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:13:35,034 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:13:35,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:13:35 BoogieIcfgContainer [2019-09-16 16:13:35,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:13:35,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:13:35,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:13:35,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:13:35,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:13:34" (1/3) ... [2019-09-16 16:13:35,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3ccb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:13:35, skipping insertion in model container [2019-09-16 16:13:35,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:13:34" (2/3) ... [2019-09-16 16:13:35,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3ccb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:13:35, skipping insertion in model container [2019-09-16 16:13:35,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:13:35" (3/3) ... [2019-09-16 16:13:35,059 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2019-09-16 16:13:35,075 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:13:35,086 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:13:35,133 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:13:35,168 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:13:35,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:13:35,169 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:13:35,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:13:35,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:13:35,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:13:35,170 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:13:35,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:13:35,170 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:13:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-16 16:13:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:13:35,194 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:13:35,195 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:13:35,196 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:13:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:13:35,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-16 16:13:35,202 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:13:35,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:13:35,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:35,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:13:35,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:13:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:13:35,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:13:35,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:13:35,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:13:35,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:13:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:13:35,321 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-16 16:13:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:35,352 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-16 16:13:35,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:13:35,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-16 16:13:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:35,369 INFO L225 Difference]: With dead ends: 35 [2019-09-16 16:13:35,370 INFO L226 Difference]: Without dead ends: 15 [2019-09-16 16:13:35,376 INFO L636 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 [2019-09-16 16:13:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-16 16:13:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-16 16:13:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-16 16:13:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-16 16:13:35,438 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-16 16:13:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:35,439 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-16 16:13:35,439 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:13:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-16 16:13:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:13:35,443 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:13:35,443 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:13:35,444 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:13:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:13:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-16 16:13:35,447 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:13:35,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:13:35,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:35,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:13:35,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:35,471 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:13:35,471 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:13:35,472 INFO L224 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 [2019-09-16 16:13:35,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:13:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:13:35,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-16 16:13:35,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:13:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:13:35,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:13:35,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:13:35,616 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:13:35,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:13:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:13:35,618 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-09-16 16:13:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:35,699 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-16 16:13:35,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:13:35,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-16 16:13:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:35,702 INFO L225 Difference]: With dead ends: 25 [2019-09-16 16:13:35,703 INFO L226 Difference]: Without dead ends: 22 [2019-09-16 16:13:35,704 INFO L636 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 [2019-09-16 16:13:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-16 16:13:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-16 16:13:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-16 16:13:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-16 16:13:35,719 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-16 16:13:35,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:35,720 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-16 16:13:35,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:13:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-16 16:13:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:13:35,721 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:13:35,721 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:13:35,722 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:13:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:13:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-09-16 16:13:35,724 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:13:35,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:13:35,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:35,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:13:35,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:35,747 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:13:35,748 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:13:35,748 INFO L224 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:13:35,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:13:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:13:35,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-16 16:13:35,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:13:35,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:13:35,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:13:35,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-16 16:13:35,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 16:13:35,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 16:13:35,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:13:35,943 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2019-09-16 16:13:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:36,112 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-09-16 16:13:36,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 16:13:36,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-09-16 16:13:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:36,114 INFO L225 Difference]: With dead ends: 32 [2019-09-16 16:13:36,115 INFO L226 Difference]: Without dead ends: 29 [2019-09-16 16:13:36,116 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-09-16 16:13:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-16 16:13:36,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-16 16:13:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-16 16:13:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-09-16 16:13:36,124 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2019-09-16 16:13:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:36,125 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-09-16 16:13:36,125 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 16:13:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-09-16 16:13:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 16:13:36,126 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:13:36,126 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:13:36,127 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:13:36,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:13:36,127 INFO L82 PathProgramCache]: Analyzing trace with hash 311210265, now seen corresponding path program 2 times [2019-09-16 16:13:36,128 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:13:36,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:13:36,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:36,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:13:36,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:36,137 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:13:36,137 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:13:36,137 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-16 16:13:36,163 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:13:36,195 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:13:36,195 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:13:36,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-16 16:13:36,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:13:36,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-16 16:13:36,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:13:36,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-09-16 16:13:36,386 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-16 16:13:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-16 16:13:36,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-16 16:13:36,388 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2019-09-16 16:13:36,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:36,599 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-09-16 16:13:36,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 16:13:36,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-09-16 16:13:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:36,601 INFO L225 Difference]: With dead ends: 39 [2019-09-16 16:13:36,601 INFO L226 Difference]: Without dead ends: 36 [2019-09-16 16:13:36,602 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-09-16 16:13:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-16 16:13:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-16 16:13:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-16 16:13:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-09-16 16:13:36,610 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2019-09-16 16:13:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:36,611 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-09-16 16:13:36,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-16 16:13:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-09-16 16:13:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-16 16:13:36,612 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:13:36,612 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:13:36,613 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:13:36,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:13:36,613 INFO L82 PathProgramCache]: Analyzing trace with hash -928013666, now seen corresponding path program 3 times [2019-09-16 16:13:36,613 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:13:36,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:13:36,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:36,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:13:36,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:36,620 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:13:36,620 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:13:36,620 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:13:36,642 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:13:36,656 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-16 16:13:36,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:13:36,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-16 16:13:36,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:13:36,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-16 16:13:36,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:13:36,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-16 16:13:36,749 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 16:13:36,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 16:13:36,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:13:36,751 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2019-09-16 16:13:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:38,855 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-09-16 16:13:38,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:13:38,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-09-16 16:13:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:38,856 INFO L225 Difference]: With dead ends: 36 [2019-09-16 16:13:38,856 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:13:38,857 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:13:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:13:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:13:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:13:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:13:38,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-16 16:13:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:38,858 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:13:38,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 16:13:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:13:38,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:13:38,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:13:40,877 WARN L191 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-09-16 16:13:42,986 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-09-16 16:13:42,989 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-16 16:13:42,990 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:13:42,990 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:13:42,990 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-16 16:13:42,990 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:13:42,990 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:13:42,990 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 18 40) the Hoare annotation is: true [2019-09-16 16:13:42,991 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (or (and (= main_~x~0 1) (= main_~y~0 1)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (+ (* v_main_~x~0_13 main_~z~0) 1)) (.cse1 (* v_main_~y~0_13 main_~z~0))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse1) (= (+ (+ (- v_main_~x~0_13) .cse0) (- .cse1)) 0))))) [2019-09-16 16:13:42,991 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2019-09-16 16:13:42,991 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 1) (= main_~y~0 1)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (+ (* v_main_~x~0_13 main_~z~0) 1)) (.cse1 (* v_main_~y~0_13 main_~z~0))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse1) (= (+ (+ (- v_main_~x~0_13) .cse0) (- .cse1)) 0))))) [2019-09-16 16:13:42,991 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 1) (= main_~y~0 1)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (+ (* v_main_~x~0_13 main_~z~0) 1)) (.cse1 (* v_main_~y~0_13 main_~z~0))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse1) (= (+ (+ (- v_main_~x~0_13) .cse0) (- .cse1)) 0))))) [2019-09-16 16:13:42,992 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 18 40) no Hoare annotation was computed. [2019-09-16 16:13:42,992 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 18 40) no Hoare annotation was computed. [2019-09-16 16:13:42,992 INFO L443 ceAbstractionStarter]: For program point L38(line 38) no Hoare annotation was computed. [2019-09-16 16:13:42,992 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-09-16 16:13:42,992 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-09-16 16:13:42,992 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-09-16 16:13:42,993 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-09-16 16:13:42,993 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-09-16 16:13:42,993 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-09-16 16:13:43,000 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,001 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,001 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,001 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,002 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:13:43 BoogieIcfgContainer [2019-09-16 16:13:43,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:13:43,014 INFO L168 Benchmark]: Toolchain (without parser) took 8547.26 ms. Allocated memory was 131.6 MB in the beginning and 219.7 MB in the end (delta: 88.1 MB). Free memory was 87.2 MB in the beginning and 141.0 MB in the end (delta: -53.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:43,015 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 131.6 MB. Free memory is still 105.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 16:13:43,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.60 ms. Allocated memory is still 131.6 MB. Free memory was 86.8 MB in the beginning and 77.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:43,017 INFO L168 Benchmark]: Boogie Preprocessor took 121.98 ms. Allocated memory was 131.6 MB in the beginning and 198.2 MB in the end (delta: 66.6 MB). Free memory was 77.1 MB in the beginning and 174.0 MB in the end (delta: -96.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:43,018 INFO L168 Benchmark]: RCFGBuilder took 218.44 ms. Allocated memory is still 198.2 MB. Free memory was 174.0 MB in the beginning and 163.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:43,019 INFO L168 Benchmark]: TraceAbstraction took 7975.17 ms. Allocated memory was 198.2 MB in the beginning and 219.7 MB in the end (delta: 21.5 MB). Free memory was 162.2 MB in the beginning and 141.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:43,023 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 131.6 MB. Free memory is still 105.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.60 ms. Allocated memory is still 131.6 MB. Free memory was 86.8 MB in the beginning and 77.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.98 ms. Allocated memory was 131.6 MB in the beginning and 198.2 MB in the end (delta: 66.6 MB). Free memory was 77.1 MB in the beginning and 174.0 MB in the end (delta: -96.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 218.44 ms. Allocated memory is still 198.2 MB. Free memory was 174.0 MB in the beginning and 163.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7975.17 ms. Allocated memory was 198.2 MB in the beginning and 219.7 MB in the end (delta: 21.5 MB). Free memory was 162.2 MB in the beginning and 141.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 28]: Loop Invariant [2019-09-16 16:13:43,033 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,033 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,033 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,033 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,034 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,034 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,034 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-16 16:13:43,035 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,035 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-16 16:13:43,035 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] Derived loop invariant: (x == 1 && y == 1) || (\exists v_main_~y~0_13 : int, v_main_~x~0_13 : int :: (x == v_main_~x~0_13 * z + 1 && y == v_main_~y~0_13 * z) && -v_main_~x~0_13 + (v_main_~x~0_13 * z + 1) + -(v_main_~y~0_13 * z) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 4.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 43 SDslu, 230 SDs, 0 SdLazy, 181 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 116 HoareAnnotationTreeSize, 17 FomulaSimplifications, 242 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 9 QuantifiedInterpolants, 9177 SizeOfPredicates, 12 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 39/52 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...