java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 21:55:37,704 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:55:37,706 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:55:37,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:55:37,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:55:37,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:55:37,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:55:37,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:55:37,726 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:55:37,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:55:37,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:55:37,728 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:55:37,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:55:37,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:55:37,731 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:55:37,733 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:55:37,735 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:55:37,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:55:37,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:55:37,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:55:37,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 21:55:37,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 21:55:37,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 21:55:37,747 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-20 21:55:37,757 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:55:37,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:55:37,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:55:37,759 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:55:37,759 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:55:37,759 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:55:37,759 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:55:37,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:55:37,760 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:55:37,761 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:55:37,761 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:55:37,761 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:55:37,761 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:55:37,761 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:55:37,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:55:37,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:55:37,762 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:55:37,762 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:55:37,762 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:55:37,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:55:37,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:55:37,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:55:37,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:55:37,763 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:55:37,764 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:55:37,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:55:37,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:55:37,764 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:55:37,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:55:37,765 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:55:37,765 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:55:37,765 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:55:37,765 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:55:37,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:55:37,766 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:55:37,767 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:55:37,767 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:55:37,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:55:37,816 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:55:37,821 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:55:37,822 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:55:37,823 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:55:37,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:55:38,075 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:55:38,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:55:38,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:55:38,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:55:38,086 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:55:38,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1266e3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38, skipping insertion in model container [2018-01-20 21:55:38,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,108 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:55:38,148 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:55:38,269 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:55:38,284 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:55:38,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38 WrapperNode [2018-01-20 21:55:38,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:55:38,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:55:38,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:55:38,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:55:38,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... [2018-01-20 21:55:38,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:55:38,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:55:38,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:55:38,331 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:55:38,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (1/1) ... No working directory specified, using /storage/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 [2018-01-20 21:55:38,380 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:55:38,380 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:55:38,381 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:55:38,381 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:55:38,381 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:55:38,381 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:55:38,381 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:55:38,381 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:55:38,382 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:55:38,382 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:55:38,382 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:55:38,382 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:55:38,596 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:55:38,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:55:38 BoogieIcfgContainer [2018-01-20 21:55:38,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:55:38,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:55:38,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:55:38,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:55:38,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:55:38" (1/3) ... [2018-01-20 21:55:38,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50836a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:55:38, skipping insertion in model container [2018-01-20 21:55:38,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:38" (2/3) ... [2018-01-20 21:55:38,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50836a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:55:38, skipping insertion in model container [2018-01-20 21:55:38,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:55:38" (3/3) ... [2018-01-20 21:55:38,604 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:55:38,611 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:55:38,617 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-20 21:55:38,660 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:38,660 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:38,660 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:38,660 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:38,660 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:38,660 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:38,660 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:38,660 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:55:38,661 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:55:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:55:38,681 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:38,683 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:55:38,683 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:55:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-20 21:55:38,691 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:38,692 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:38,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:38,737 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:38,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:38,790 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:55:38,796 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:38,802 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:38,802 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:38,803 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:38,803 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:38,803 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:38,803 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:38,803 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:38,803 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:55:38,803 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:55:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-20 21:55:38,806 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:38,806 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:38,806 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-20 21:55:38,807 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:38,807 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:38,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:38,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:38,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:38,825 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:38,825 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:38,825 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:38,833 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:38,873 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:55:39,037 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:39,038 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 21:55:39,039 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 21:55:39,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 21:55:39,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 21:55:39,052 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-20 21:55:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:39,211 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-20 21:55:39,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 21:55:39,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-20 21:55:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:39,225 INFO L225 Difference]: With dead ends: 60 [2018-01-20 21:55:39,225 INFO L226 Difference]: Without dead ends: 35 [2018-01-20 21:55:39,229 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-20 21:55:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-20 21:55:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-20 21:55:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-20 21:55:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-20 21:55:39,270 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-20 21:55:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:39,271 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-20 21:55:39,271 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 21:55:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-20 21:55:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 21:55:39,272 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:39,273 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:39,273 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-20 21:55:39,273 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:39,273 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:39,274 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,275 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,284 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:39,284 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:39,285 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:39,297 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:39,322 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:55:39,375 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:39,376 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 21:55:39,377 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:55:39,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:55:39,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:55:39,378 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-20 21:55:39,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:39,431 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-20 21:55:39,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:55:39,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-20 21:55:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:39,433 INFO L225 Difference]: With dead ends: 56 [2018-01-20 21:55:39,434 INFO L226 Difference]: Without dead ends: 40 [2018-01-20 21:55:39,435 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:55:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-20 21:55:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-20 21:55:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-20 21:55:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-20 21:55:39,441 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-20 21:55:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:39,441 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-20 21:55:39,441 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:55:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-20 21:55:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:55:39,443 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:39,443 INFO L322 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:39,443 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-20 21:55:39,444 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:39,444 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:39,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,445 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,453 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:39,453 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:39,453 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 21:55:39,461 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:39,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:39,606 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:39,606 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:39,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:39,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:39,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:39,607 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-20 21:55:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:39,685 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-20 21:55:39,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:39,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:55:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:39,690 INFO L225 Difference]: With dead ends: 102 [2018-01-20 21:55:39,690 INFO L226 Difference]: Without dead ends: 93 [2018-01-20 21:55:39,691 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-20 21:55:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-20 21:55:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:55:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 21:55:39,702 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 21:55:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:39,702 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 21:55:39,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 21:55:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:55:39,703 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:39,704 INFO L322 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:39,704 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:39,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-20 21:55:39,704 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:39,704 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:39,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,715 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:39,715 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:39,716 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:39,723 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:39,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:39,800 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:39,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:39,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:39,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:39,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:39,801 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 21:55:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:39,887 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-20 21:55:39,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:39,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:55:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:39,889 INFO L225 Difference]: With dead ends: 95 [2018-01-20 21:55:39,889 INFO L226 Difference]: Without dead ends: 86 [2018-01-20 21:55:39,890 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-20 21:55:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-20 21:55:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:55:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 21:55:39,899 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 21:55:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:39,900 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 21:55:39,900 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 21:55:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:55:39,901 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:39,901 INFO L322 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:39,902 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:39,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-20 21:55:39,902 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:39,902 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:39,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,903 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,904 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:39,911 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:39,912 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:39,912 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:39,926 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:39,945 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:40,041 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:40,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:40,041 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:40,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:40,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:40,042 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 21:55:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:40,107 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-20 21:55:40,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:40,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:55:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:40,109 INFO L225 Difference]: With dead ends: 110 [2018-01-20 21:55:40,109 INFO L226 Difference]: Without dead ends: 101 [2018-01-20 21:55:40,110 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-20 21:55:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-20 21:55:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:55:40,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 21:55:40,120 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 21:55:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:40,121 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 21:55:40,121 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 21:55:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:55:40,122 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:40,122 INFO L322 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:40,123 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-20 21:55:40,123 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:40,123 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:40,124 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,125 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,147 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,155 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:40,155 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:40,155 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:40,162 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:40,181 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:40,284 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:40,284 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:40,284 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:40,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:40,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:40,285 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 21:55:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:40,329 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-20 21:55:40,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:40,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:55:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:40,330 INFO L225 Difference]: With dead ends: 69 [2018-01-20 21:55:40,331 INFO L226 Difference]: Without dead ends: 60 [2018-01-20 21:55:40,331 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-20 21:55:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-20 21:55:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-20 21:55:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-20 21:55:40,336 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-20 21:55:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:40,336 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-20 21:55:40,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-20 21:55:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-20 21:55:40,337 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:40,337 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:40,338 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-20 21:55:40,338 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:40,338 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:40,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,339 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,347 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:40,347 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:40,347 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:40,353 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:40,444 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:55:40,457 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:40,464 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:40,464 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:40,481 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:40,481 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:40,481 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:40,481 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:40,482 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:40,482 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:40,482 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:40,482 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:55:40,482 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:55:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 21:55:40,485 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:40,485 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:40,485 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:40,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-20 21:55:40,486 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:40,486 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:40,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,487 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,505 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:40,506 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:40,506 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-20 21:55:40,515 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 21:55:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:40,533 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:55:40,619 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:40,619 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 21:55:40,620 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 21:55:40,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 21:55:40,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 21:55:40,620 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-20 21:55:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:40,706 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-20 21:55:40,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 21:55:40,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-20 21:55:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:40,707 INFO L225 Difference]: With dead ends: 60 [2018-01-20 21:55:40,707 INFO L226 Difference]: Without dead ends: 33 [2018-01-20 21:55:40,708 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-20 21:55:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-20 21:55:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-20 21:55:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-20 21:55:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-20 21:55:40,711 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-20 21:55:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:40,712 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-20 21:55:40,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 21:55:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-20 21:55:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 21:55:40,713 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:40,713 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:40,713 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-20 21:55:40,713 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:40,713 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:40,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,719 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:40,720 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:40,720 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:40,731 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:40,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:55:40,803 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:40,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 21:55:40,804 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:55:40,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:55:40,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:55:40,804 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-20 21:55:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:40,884 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-20 21:55:40,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:55:40,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-20 21:55:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:40,885 INFO L225 Difference]: With dead ends: 52 [2018-01-20 21:55:40,885 INFO L226 Difference]: Without dead ends: 38 [2018-01-20 21:55:40,885 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:55:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-20 21:55:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-20 21:55:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-20 21:55:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-20 21:55:40,888 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-20 21:55:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:40,888 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-20 21:55:40,888 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:55:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-20 21:55:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:55:40,889 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:40,889 INFO L322 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, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:40,889 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-20 21:55:40,889 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:40,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:40,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,890 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:40,897 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:40,897 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:40,897 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:40,909 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:40,928 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:40,987 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:40,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:40,988 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:40,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:40,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:40,988 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-01-20 21:55:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:41,056 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-01-20 21:55:41,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:41,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-20 21:55:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:41,058 INFO L225 Difference]: With dead ends: 98 [2018-01-20 21:55:41,058 INFO L226 Difference]: Without dead ends: 91 [2018-01-20 21:55:41,058 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-20 21:55:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2018-01-20 21:55:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:55:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 21:55:41,065 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 21:55:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:41,065 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 21:55:41,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 21:55:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:55:41,066 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:41,066 INFO L322 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, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:41,066 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:41,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-20 21:55:41,067 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:41,067 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:41,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:41,068 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:41,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:41,074 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:41,074 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:41,074 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:41,085 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:41,102 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:41,173 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:41,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:41,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:41,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:41,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:41,175 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-20 21:55:41,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:41,233 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-20 21:55:41,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:41,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-20 21:55:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:41,234 INFO L225 Difference]: With dead ends: 91 [2018-01-20 21:55:41,234 INFO L226 Difference]: Without dead ends: 84 [2018-01-20 21:55:41,235 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-20 21:55:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2018-01-20 21:55:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:55:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 21:55:41,240 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 21:55:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:41,240 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 21:55:41,240 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 21:55:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:55:41,241 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:41,242 INFO L322 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, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:41,242 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-20 21:55:41,242 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:41,242 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:41,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:41,243 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:41,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:41,249 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:41,249 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:41,249 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-20 21:55:41,257 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:41,274 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:41,355 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:41,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:55:41,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:55:41,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:55:41,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:41,356 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-20 21:55:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:41,456 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-01-20 21:55:41,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:55:41,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-20 21:55:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:41,457 INFO L225 Difference]: With dead ends: 106 [2018-01-20 21:55:41,458 INFO L226 Difference]: Without dead ends: 99 [2018-01-20 21:55:41,458 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:55:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-20 21:55:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2018-01-20 21:55:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:55:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 21:55:41,465 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 21:55:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:41,466 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 21:55:41,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:55:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 21:55:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:55:41,467 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:41,467 INFO L322 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, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:41,467 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-20 21:55:41,467 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:41,467 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:41,468 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:41,468 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:41,469 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:41,474 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:55:41,474 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:55:41,475 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 21:55:41,487 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:41,502 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:55:41,569 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store .cse0 |c_main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |c_main_#t~malloc3.base|) 0)))) is different from true [2018-01-20 21:55:41,586 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int) (|main_#t~malloc3.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store (store .cse0 |main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0) |main_#t~malloc3.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |main_#t~malloc3.base|) 0)))) is different from true [2018-01-20 21:55:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:55:41,622 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:41,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 21:55:41,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-20 21:55:41,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-20 21:55:41,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-01-20 21:55:41,623 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-01-20 21:55:41,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:41,652 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-20 21:55:41,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-20 21:55:41,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-20 21:55:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:41,653 INFO L225 Difference]: With dead ends: 52 [2018-01-20 21:55:41,653 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:55:41,653 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-01-20 21:55:41,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:55:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:55:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:55:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:55:41,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 21:55:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:41,654 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:55:41,654 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-20 21:55:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:55:41,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:55:41,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:55:41 BoogieIcfgContainer [2018-01-20 21:55:41,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:55:41,658 INFO L168 Benchmark]: Toolchain (without parser) took 3581.90 ms. Allocated memory was 303.0 MB in the beginning and 472.4 MB in the end (delta: 169.3 MB). Free memory was 261.3 MB in the beginning and 328.1 MB in the end (delta: -66.7 MB). Peak memory consumption was 102.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:41,659 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:55:41,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.61 ms. Allocated memory is still 303.0 MB. Free memory was 260.4 MB in the beginning and 250.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:41,660 INFO L168 Benchmark]: Boogie Preprocessor took 38.51 ms. Allocated memory is still 303.0 MB. Free memory was 250.3 MB in the beginning and 249.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-20 21:55:41,660 INFO L168 Benchmark]: RCFGBuilder took 265.87 ms. Allocated memory is still 303.0 MB. Free memory was 248.4 MB in the beginning and 232.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:41,660 INFO L168 Benchmark]: TraceAbstraction took 3059.72 ms. Allocated memory was 303.0 MB in the beginning and 472.4 MB in the end (delta: 169.3 MB). Free memory was 232.6 MB in the beginning and 328.1 MB in the end (delta: -95.5 MB). Peak memory consumption was 73.9 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:41,663 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 210.61 ms. Allocated memory is still 303.0 MB. Free memory was 260.4 MB in the beginning and 250.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.51 ms. Allocated memory is still 303.0 MB. Free memory was 250.3 MB in the beginning and 249.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 265.87 ms. Allocated memory is still 303.0 MB. Free memory was 248.4 MB in the beginning and 232.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3059.72 ms. Allocated memory was 303.0 MB in the beginning and 472.4 MB in the end (delta: 169.3 MB). Free memory was 232.6 MB in the beginning and 328.1 MB in the end (delta: -95.5 MB). Peak memory consumption was 73.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 42 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 VAL [length=1] [L544] int fac = __VERIFIER_nondet_int(); [L545] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L545] fac = 1 VAL [fac=1, length=1] [L546] EXPR, FCALL __builtin_alloca (length*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={11:0}, fac=1, length=1] [L546] int *arr = __builtin_alloca (length*sizeof(int)); VAL [__builtin_alloca (length*sizeof(int))={11:0}, arr={11:0}, fac=1, length=1] [L547] EXPR, FCALL __builtin_alloca (fac*length*sizeof(int)) VAL [__builtin_alloca (fac*length*sizeof(int))={10:0}, __builtin_alloca (length*sizeof(int))={11:0}, arr={11:0}, fac=1, length=1] [L547] int *arr2 = __builtin_alloca (fac*length*sizeof(int)); VAL [__builtin_alloca (fac*length*sizeof(int))={10:0}, __builtin_alloca (length*sizeof(int))={11:0}, arr={11:0}, arr2={10:0}, fac=1, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length*sizeof(int))={10:0}, __builtin_alloca (length*sizeof(int))={11:0}, arr={11:0}, arr2={10:0}, fac=1, i=0, length=1] [L549] COND TRUE i