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/array-multidimensional/copy-partial-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-01 23:56:20,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-01 23:56:20,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-01 23:56:20,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-01 23:56:20,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-01 23:56:20,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-01 23:56:20,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-01 23:56:20,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-01 23:56:20,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-01 23:56:20,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-01 23:56:20,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-01 23:56:20,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-01 23:56:20,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-01 23:56:20,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-01 23:56:20,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-01 23:56:20,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-01 23:56:20,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-01 23:56:20,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-01 23:56:20,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-01 23:56:20,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-01 23:56:20,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-01 23:56:20,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-01 23:56:20,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-01 23:56:20,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-01 23:56:20,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-01 23:56:20,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-01 23:56:20,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-01 23:56:20,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-01 23:56:20,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-01 23:56:20,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-01 23:56:20,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-01 23:56:20,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-01 23:56:20,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-01 23:56:20,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-01 23:56:20,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-01 23:56:20,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-01 23:56:20,717 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 [2019-10-01 23:56:20,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-01 23:56:20,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-01 23:56:20,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-01 23:56:20,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-01 23:56:20,733 INFO L138 SettingsManager]: * Use SBE=true [2019-10-01 23:56:20,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-01 23:56:20,734 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-01 23:56:20,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-01 23:56:20,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-01 23:56:20,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-01 23:56:20,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-01 23:56:20,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-01 23:56:20,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-01 23:56:20,735 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-01 23:56:20,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-01 23:56:20,736 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-01 23:56:20,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-01 23:56:20,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-01 23:56:20,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-01 23:56:20,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-01 23:56:20,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-01 23:56:20,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-01 23:56:20,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-01 23:56:20,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-01 23:56:20,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-01 23:56:20,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-01 23:56:20,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-01 23:56:20,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-01 23:56:20,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-01 23:56:20,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-01 23:56:20,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-01 23:56:20,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-01 23:56:20,790 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-01 23:56:20,791 INFO L275 PluginConnector]: CDTParser initialized [2019-10-01 23:56:20,791 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c [2019-10-01 23:56:20,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26463f63e/75ba3e34bfe04d9cb48110510697138f/FLAG8ad447c0c [2019-10-01 23:56:21,320 INFO L306 CDTParser]: Found 1 translation units. [2019-10-01 23:56:21,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c [2019-10-01 23:56:21,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26463f63e/75ba3e34bfe04d9cb48110510697138f/FLAG8ad447c0c [2019-10-01 23:56:21,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26463f63e/75ba3e34bfe04d9cb48110510697138f [2019-10-01 23:56:21,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-01 23:56:21,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-01 23:56:21,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-01 23:56:21,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-01 23:56:21,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-01 23:56:21,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:21,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ea0954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21, skipping insertion in model container [2019-10-01 23:56:21,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:21,718 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-01 23:56:21,737 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-01 23:56:21,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-01 23:56:21,933 INFO L188 MainTranslator]: Completed pre-run [2019-10-01 23:56:21,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-01 23:56:21,978 INFO L192 MainTranslator]: Completed translation [2019-10-01 23:56:21,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21 WrapperNode [2019-10-01 23:56:21,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-01 23:56:21,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-01 23:56:21,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-01 23:56:21,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-01 23:56:22,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (1/1) ... [2019-10-01 23:56:22,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-01 23:56:22,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-01 23:56:22,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-01 23:56:22,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-01 23:56:22,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (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 [2019-10-01 23:56:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-01 23:56:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-01 23:56:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-01 23:56:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-01 23:56:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-01 23:56:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-01 23:56:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-01 23:56:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-01 23:56:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-01 23:56:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-01 23:56:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-01 23:56:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-01 23:56:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-01 23:56:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-01 23:56:22,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-01 23:56:22,467 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-01 23:56:22,468 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-01 23:56:22,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 11:56:22 BoogieIcfgContainer [2019-10-01 23:56:22,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-01 23:56:22,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-01 23:56:22,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-01 23:56:22,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-01 23:56:22,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.10 11:56:21" (1/3) ... [2019-10-01 23:56:22,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49663393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 11:56:22, skipping insertion in model container [2019-10-01 23:56:22,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 11:56:21" (2/3) ... [2019-10-01 23:56:22,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49663393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 11:56:22, skipping insertion in model container [2019-10-01 23:56:22,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 11:56:22" (3/3) ... [2019-10-01 23:56:22,477 INFO L109 eAbstractionObserver]: Analyzing ICFG copy-partial-2-n-u.c [2019-10-01 23:56:22,488 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-01 23:56:22,499 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-01 23:56:22,516 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-01 23:56:22,548 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-01 23:56:22,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-01 23:56:22,548 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-01 23:56:22,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-01 23:56:22,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-01 23:56:22,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-01 23:56:22,549 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-01 23:56:22,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-01 23:56:22,549 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-01 23:56:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-10-01 23:56:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-01 23:56:22,571 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:22,571 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:22,574 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:22,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1035913628, now seen corresponding path program 1 times [2019-10-01 23:56:22,581 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:22,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:22,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:22,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:22,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:22,678 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:22,678 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:22,678 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 [2019-10-01 23:56:22,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 23:56:22,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-01 23:56:22,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 23:56:22,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 23:56:22,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-01 23:56:22,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-01 23:56:22,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-01 23:56:22,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-01 23:56:22,816 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2019-10-01 23:56:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:22,908 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2019-10-01 23:56:22,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-01 23:56:22,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-01 23:56:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:22,922 INFO L225 Difference]: With dead ends: 57 [2019-10-01 23:56:22,922 INFO L226 Difference]: Without dead ends: 28 [2019-10-01 23:56:22,930 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-01 23:56:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-01 23:56:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-10-01 23:56:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-01 23:56:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-10-01 23:56:22,978 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-10-01 23:56:22,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:22,979 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-10-01 23:56:22,979 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-01 23:56:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-10-01 23:56:22,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-01 23:56:22,980 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:22,980 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:22,981 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:22,981 INFO L82 PathProgramCache]: Analyzing trace with hash 573516244, now seen corresponding path program 1 times [2019-10-01 23:56:22,982 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:22,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:22,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:22,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:22,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:22,994 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:22,994 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:22,994 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 [2019-10-01 23:56:23,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 23:56:23,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-01 23:56:23,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 23:56:23,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 23:56:23,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-01 23:56:23,113 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-01 23:56:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-01 23:56:23,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-01 23:56:23,119 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2019-10-01 23:56:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:23,203 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2019-10-01 23:56:23,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-01 23:56:23,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-10-01 23:56:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:23,208 INFO L225 Difference]: With dead ends: 55 [2019-10-01 23:56:23,208 INFO L226 Difference]: Without dead ends: 36 [2019-10-01 23:56:23,209 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-01 23:56:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-01 23:56:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-10-01 23:56:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-01 23:56:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-01 23:56:23,221 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2019-10-01 23:56:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:23,221 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-01 23:56:23,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-01 23:56:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-01 23:56:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-01 23:56:23,222 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:23,223 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:23,223 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:23,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:23,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1173975853, now seen corresponding path program 1 times [2019-10-01 23:56:23,223 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:23,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:23,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:23,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,233 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:23,233 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:23,233 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) [2019-10-01 23:56:23,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 23:56:23,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-01 23:56:23,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 23:56:23,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:23,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-01 23:56:23,348 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-01 23:56:23,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-01 23:56:23,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-01 23:56:23,349 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2019-10-01 23:56:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:23,482 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2019-10-01 23:56:23,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-01 23:56:23,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-01 23:56:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:23,486 INFO L225 Difference]: With dead ends: 66 [2019-10-01 23:56:23,486 INFO L226 Difference]: Without dead ends: 46 [2019-10-01 23:56:23,487 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-01 23:56:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-01 23:56:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-10-01 23:56:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-01 23:56:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-01 23:56:23,504 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2019-10-01 23:56:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:23,505 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-01 23:56:23,505 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-01 23:56:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-01 23:56:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-01 23:56:23,507 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:23,508 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:23,509 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash 488343988, now seen corresponding path program 2 times [2019-10-01 23:56:23,510 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:23,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:23,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:23,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,537 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:23,537 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:23,537 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 [2019-10-01 23:56:23,558 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-01 23:56:23,580 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-01 23:56:23,581 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 23:56:23,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-01 23:56:23,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-01 23:56:23,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 23:56:23,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-01 23:56:23,610 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-01 23:56:23,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-01 23:56:23,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-01 23:56:23,611 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2019-10-01 23:56:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:23,702 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2019-10-01 23:56:23,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-01 23:56:23,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-01 23:56:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:23,704 INFO L225 Difference]: With dead ends: 52 [2019-10-01 23:56:23,704 INFO L226 Difference]: Without dead ends: 40 [2019-10-01 23:56:23,704 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-01 23:56:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-01 23:56:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 29. [2019-10-01 23:56:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-01 23:56:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-01 23:56:23,719 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 21 [2019-10-01 23:56:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:23,721 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-01 23:56:23,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-01 23:56:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-01 23:56:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-01 23:56:23,725 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:23,725 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:23,725 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:23,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash -362294696, now seen corresponding path program 1 times [2019-10-01 23:56:23,726 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:23,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:23,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 23:56:23,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,747 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:23,748 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:23,748 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:23,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 23:56:23,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-01 23:56:23,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-01 23:56:23,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:23,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-10-01 23:56:23,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-01 23:56:23,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-01 23:56:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-01 23:56:23,839 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 6 states. [2019-10-01 23:56:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:23,966 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2019-10-01 23:56:23,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-01 23:56:23,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-01 23:56:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:23,968 INFO L225 Difference]: With dead ends: 79 [2019-10-01 23:56:23,968 INFO L226 Difference]: Without dead ends: 57 [2019-10-01 23:56:23,969 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-01 23:56:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-01 23:56:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30. [2019-10-01 23:56:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-01 23:56:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-01 23:56:23,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 24 [2019-10-01 23:56:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:23,978 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-01 23:56:23,978 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-01 23:56:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-01 23:56:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-01 23:56:23,979 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:23,979 INFO L411 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:23,979 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1895729479, now seen corresponding path program 2 times [2019-10-01 23:56:23,980 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:23,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:23,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:23,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:23,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:23,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:23,987 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:24,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-01 23:56:24,035 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-01 23:56:24,035 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 23:56:24,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-01 23:56:24,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-01 23:56:24,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:24,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-01 23:56:24,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-01 23:56:24,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-01 23:56:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-01 23:56:24,086 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-10-01 23:56:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:24,188 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2019-10-01 23:56:24,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-01 23:56:24,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-01 23:56:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:24,190 INFO L225 Difference]: With dead ends: 69 [2019-10-01 23:56:24,190 INFO L226 Difference]: Without dead ends: 57 [2019-10-01 23:56:24,193 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-01 23:56:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-01 23:56:24,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2019-10-01 23:56:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-01 23:56:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2019-10-01 23:56:24,213 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 25 [2019-10-01 23:56:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:24,213 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2019-10-01 23:56:24,213 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-01 23:56:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-10-01 23:56:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-01 23:56:24,216 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:24,216 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:24,216 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1579223859, now seen corresponding path program 3 times [2019-10-01 23:56:24,217 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:24,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:24,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 23:56:24,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,231 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:24,231 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:24,231 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:24,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-01 23:56:24,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-01 23:56:24,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 23:56:24,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-01 23:56:24,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-01 23:56:24,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:24,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-10-01 23:56:24,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-01 23:56:24,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-01 23:56:24,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-01 23:56:24,320 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2019-10-01 23:56:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:24,379 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2019-10-01 23:56:24,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-01 23:56:24,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-01 23:56:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:24,381 INFO L225 Difference]: With dead ends: 64 [2019-10-01 23:56:24,381 INFO L226 Difference]: Without dead ends: 44 [2019-10-01 23:56:24,382 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-01 23:56:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-01 23:56:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2019-10-01 23:56:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-01 23:56:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-10-01 23:56:24,397 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 28 [2019-10-01 23:56:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:24,398 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-10-01 23:56:24,398 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-01 23:56:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-10-01 23:56:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-01 23:56:24,402 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:24,402 INFO L411 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:24,403 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:24,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1507565378, now seen corresponding path program 4 times [2019-10-01 23:56:24,403 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:24,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:24,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 23:56:24,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,420 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:24,420 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:24,421 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:24,440 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-10-01 23:56:24,458 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-01 23:56:24,458 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 23:56:24,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-01 23:56:24,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-01 23:56:24,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:24,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-01 23:56:24,499 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-01 23:56:24,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-01 23:56:24,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-01 23:56:24,499 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2019-10-01 23:56:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:24,562 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2019-10-01 23:56:24,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-01 23:56:24,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-01 23:56:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:24,563 INFO L225 Difference]: With dead ends: 74 [2019-10-01 23:56:24,563 INFO L226 Difference]: Without dead ends: 45 [2019-10-01 23:56:24,567 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-01 23:56:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-01 23:56:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-10-01 23:56:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-01 23:56:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-01 23:56:24,583 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 34 [2019-10-01 23:56:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:24,583 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-01 23:56:24,583 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-01 23:56:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-01 23:56:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-01 23:56:24,587 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:24,587 INFO L411 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:24,588 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:24,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1070464288, now seen corresponding path program 1 times [2019-10-01 23:56:24,588 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:24,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:24,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 23:56:24,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,604 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:24,604 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:24,605 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:24,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 23:56:24,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-01 23:56:24,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-01 23:56:24,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:24,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-01 23:56:24,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-01 23:56:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-01 23:56:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-01 23:56:24,738 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2019-10-01 23:56:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:24,856 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2019-10-01 23:56:24,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-01 23:56:24,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-10-01 23:56:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:24,858 INFO L225 Difference]: With dead ends: 114 [2019-10-01 23:56:24,858 INFO L226 Difference]: Without dead ends: 83 [2019-10-01 23:56:24,859 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-01 23:56:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-01 23:56:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 44. [2019-10-01 23:56:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-01 23:56:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-01 23:56:24,874 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 36 [2019-10-01 23:56:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:24,875 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-01 23:56:24,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-01 23:56:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-01 23:56:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-01 23:56:24,876 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:24,876 INFO L411 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:24,876 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:24,876 INFO L82 PathProgramCache]: Analyzing trace with hash -620673214, now seen corresponding path program 2 times [2019-10-01 23:56:24,877 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:24,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:24,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:56:24,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:24,885 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:24,886 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:24,886 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:24,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-01 23:56:24,936 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-01 23:56:24,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 23:56:24,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-01 23:56:24,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Exception during sending of exit command (exit): Broken pipe [2019-10-01 23:56:25,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:25,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-01 23:56:25,015 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-01 23:56:25,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-01 23:56:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-01 23:56:25,015 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 8 states. [2019-10-01 23:56:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:56:25,161 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2019-10-01 23:56:25,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-01 23:56:25,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-01 23:56:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:56:25,163 INFO L225 Difference]: With dead ends: 129 [2019-10-01 23:56:25,163 INFO L226 Difference]: Without dead ends: 97 [2019-10-01 23:56:25,164 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-01 23:56:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-10-01 23:56:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 46. [2019-10-01 23:56:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-01 23:56:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-10-01 23:56:25,183 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 38 [2019-10-01 23:56:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:56:25,183 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-10-01 23:56:25,183 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-01 23:56:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-10-01 23:56:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-01 23:56:25,185 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:56:25,185 INFO L411 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:56:25,186 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:56:25,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:56:25,186 INFO L82 PathProgramCache]: Analyzing trace with hash 11267488, now seen corresponding path program 3 times [2019-10-01 23:56:25,186 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:56:25,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:56:25,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:25,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 23:56:25,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:56:25,197 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:56:25,197 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:56:25,197 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:56:25,219 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-01 23:56:25,250 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-01 23:56:25,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 23:56:25,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 35 conjunts are in the unsatisfiable core [2019-10-01 23:56:25,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:56:25,325 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-10-01 23:56:25,326 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-01 23:56:25,341 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-01 23:56:25,341 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-01 23:56:25,341 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2019-10-01 23:56:25,422 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2019-10-01 23:56:25,423 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-01 23:56:25,442 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-01 23:56:25,442 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-01 23:56:25,442 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-10-01 23:56:25,507 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-01 23:56:25,508 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 106 [2019-10-01 23:56:25,509 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-01 23:56:25,569 INFO L567 ElimStorePlain]: treesize reduction 86, result has 44.9 percent of original size [2019-10-01 23:56:25,571 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-01 23:56:25,572 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:70 [2019-10-01 23:56:32,120 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-01 23:56:32,123 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 13 [2019-10-01 23:56:32,124 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-01 23:56:32,132 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-01 23:56:32,133 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-01 23:56:32,134 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:59, output treesize:3 [2019-10-01 23:56:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-01 23:56:32,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-01 23:56:32,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-10-01 23:56:32,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-01 23:56:32,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-01 23:56:32,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=171, Unknown=3, NotChecked=0, Total=210 [2019-10-01 23:56:32,230 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 15 states. [2019-10-01 23:56:42,151 WARN L191 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-10-01 23:56:46,531 WARN L191 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 62 [2019-10-01 23:57:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 23:57:23,429 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2019-10-01 23:57:23,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-01 23:57:23,430 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2019-10-01 23:57:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 23:57:23,431 INFO L225 Difference]: With dead ends: 70 [2019-10-01 23:57:23,431 INFO L226 Difference]: Without dead ends: 68 [2019-10-01 23:57:23,431 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=146, Invalid=490, Unknown=14, NotChecked=0, Total=650 [2019-10-01 23:57:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-01 23:57:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2019-10-01 23:57:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-01 23:57:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2019-10-01 23:57:23,444 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 40 [2019-10-01 23:57:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 23:57:23,444 INFO L475 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2019-10-01 23:57:23,444 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-01 23:57:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-10-01 23:57:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-01 23:57:23,445 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 23:57:23,446 INFO L411 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 23:57:23,446 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 23:57:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 23:57:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash 424614712, now seen corresponding path program 1 times [2019-10-01 23:57:23,446 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 23:57:23,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 23:57:23,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:57:23,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 23:57:23,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 23:57:23,452 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-01 23:57:23,453 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-01 23:57:23,453 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-01 23:57:23,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 23:57:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 23:57:23,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-01 23:57:23,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 23:57:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-01 23:57:23,587 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.core.lib.util.MonitoredProcess.forceShutdown(MonitoredProcess.java:403) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.exit(Executor.java:135) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.exit(Scriptor.java:213) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.exit(WrapperScript.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:465) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-01 23:57:23,592 INFO L168 Benchmark]: Toolchain (without parser) took 61894.88 ms. Allocated memory was 138.4 MB in the beginning and 307.2 MB in the end (delta: 168.8 MB). Free memory was 85.9 MB in the beginning and 265.7 MB in the end (delta: -179.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-01 23:57:23,593 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-01 23:57:23,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.24 ms. Allocated memory is still 138.4 MB. Free memory was 85.7 MB in the beginning and 75.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-10-01 23:57:23,594 INFO L168 Benchmark]: Boogie Preprocessor took 142.19 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 75.1 MB in the beginning and 176.4 MB in the end (delta: -101.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-01 23:57:23,595 INFO L168 Benchmark]: RCFGBuilder took 346.63 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 159.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-10-01 23:57:23,596 INFO L168 Benchmark]: TraceAbstraction took 61120.02 ms. Allocated memory was 199.8 MB in the beginning and 307.2 MB in the end (delta: 107.5 MB). Free memory was 159.2 MB in the beginning and 265.7 MB in the end (delta: -106.5 MB). Peak memory consumption was 988.5 kB. Max. memory is 7.1 GB. [2019-10-01 23:57:23,600 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.24 ms. Allocated memory is still 138.4 MB. Free memory was 85.7 MB in the beginning and 75.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.19 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 75.1 MB in the beginning and 176.4 MB in the end (delta: -101.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.63 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 159.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 61120.02 ms. Allocated memory was 199.8 MB in the beginning and 307.2 MB in the end (delta: 107.5 MB). Free memory was 159.2 MB in the beginning and 265.7 MB in the end (delta: -106.5 MB). Peak memory consumption was 988.5 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.core.lib.util.MonitoredProcess.forceShutdown(MonitoredProcess.java:403) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...