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 0.1.23-47db877 [2018-01-23 14:21:41,628 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:21:41,629 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:21:41,645 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:21:41,645 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:21:41,646 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:21:41,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:21:41,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:21:41,651 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:21:41,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:21:41,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:21:41,653 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:21:41,654 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:21:41,655 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:21:41,656 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:21:41,659 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:21:41,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:21:41,663 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:21:41,665 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:21:41,666 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:21:41,668 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:21:41,675 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 [2018-01-23 14:21:41,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:21:41,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:21:41,684 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:21:41,684 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:21:41,684 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:21:41,685 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:21:41,685 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:21:41,685 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:21:41,685 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:21:41,685 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:21:41,686 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:21:41,687 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:21:41,687 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:21:41,687 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:21:41,687 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:21:41,687 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:21:41,687 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:21:41,688 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:21:41,688 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:21:41,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:21:41,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:21:41,688 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:21:41,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:21:41,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:21:41,689 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:21:41,689 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:21:41,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:21:41,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:21:41,689 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:21:41,690 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:21:41,690 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:21:41,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:21:41,734 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:21:41,737 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:21:41,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:21:41,738 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:21:41,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-23 14:21:41,916 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:21:41,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:21:41,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:21:41,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:21:41,927 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:21:41,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:21:41" (1/1) ... [2018-01-23 14:21:41,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba4cb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:41, skipping insertion in model container [2018-01-23 14:21:41,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:21:41" (1/1) ... [2018-01-23 14:21:41,946 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:21:41,984 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:21:42,107 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:21:42,124 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:21:42,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42 WrapperNode [2018-01-23 14:21:42,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:21:42,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:21:42,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:21:42,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:21:42,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (1/1) ... [2018-01-23 14:21:42,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:21:42,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:21:42,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:21:42,162 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:21:42,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (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 [2018-01-23 14:21:42,218 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:21:42,218 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:21:42,218 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:21:42,219 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:21:42,219 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:21:42,219 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:21:42,219 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:21:42,219 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:21:42,219 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:21:42,220 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:21:42,220 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:21:42,220 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:21:42,417 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:21:42,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:21:42 BoogieIcfgContainer [2018-01-23 14:21:42,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:21:42,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:21:42,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:21:42,421 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:21:42,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:21:41" (1/3) ... [2018-01-23 14:21:42,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d28562c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:21:42, skipping insertion in model container [2018-01-23 14:21:42,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:42" (2/3) ... [2018-01-23 14:21:42,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d28562c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:21:42, skipping insertion in model container [2018-01-23 14:21:42,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:21:42" (3/3) ... [2018-01-23 14:21:42,424 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-23 14:21:42,431 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:21:42,438 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-23 14:21:42,489 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:42,489 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:42,489 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:42,489 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:42,489 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:42,489 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:42,490 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:42,490 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:21:42,491 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-23 14:21:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:21:42,518 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:42,519 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:21:42,519 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:21:42,524 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-23 14:21:42,526 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:42,527 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:42,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:42,588 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:42,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:42,656 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:21:42,662 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:42,670 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:42,670 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:42,670 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:42,670 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:42,670 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:42,670 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:42,671 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:42,671 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:21:42,671 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-23 14:21:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-23 14:21:42,675 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:42,675 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] [2018-01-23 14:21:42,675 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-23 14:21:42,676 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:42,676 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:42,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:42,677 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:42,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:42,698 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:42,699 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:42,699 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 [2018-01-23 14:21:42,706 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:42,740 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:42,880 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:42,897 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:21:42,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:21:42,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:21:42,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:21:42,974 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-23 14:21:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:43,115 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-23 14:21:43,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:21:43,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-23 14:21:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:43,130 INFO L225 Difference]: With dead ends: 60 [2018-01-23 14:21:43,130 INFO L226 Difference]: Without dead ends: 35 [2018-01-23 14:21:43,134 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 [2018-01-23 14:21:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-23 14:21:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-23 14:21:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-23 14:21:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-23 14:21:43,165 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-23 14:21:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:43,165 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-23 14:21:43,166 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:21:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-23 14:21:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:21:43,166 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:43,167 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] [2018-01-23 14:21:43,167 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:43,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-23 14:21:43,167 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:43,167 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:43,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,168 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,178 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:43,178 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:43,178 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 [2018-01-23 14:21:43,190 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:43,213 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:43,256 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:43,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:21:43,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:21:43,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:21:43,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:21:43,258 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-23 14:21:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:43,307 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-23 14:21:43,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:21:43,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-23 14:21:43,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:43,309 INFO L225 Difference]: With dead ends: 56 [2018-01-23 14:21:43,309 INFO L226 Difference]: Without dead ends: 40 [2018-01-23 14:21:43,310 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 [2018-01-23 14:21:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-23 14:21:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-23 14:21:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-23 14:21:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-23 14:21:43,315 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-23 14:21:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:43,315 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-23 14:21:43,315 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:21:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-23 14:21:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:21:43,316 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:43,316 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] [2018-01-23 14:21:43,316 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-23 14:21:43,316 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:43,316 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:43,317 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,317 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,317 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,324 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:43,324 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:43,324 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 [2018-01-23 14:21:43,331 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:43,353 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:43,439 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:43,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:43,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:43,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:43,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:43,440 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-23 14:21:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:43,551 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-23 14:21:43,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:43,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:21:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:43,556 INFO L225 Difference]: With dead ends: 102 [2018-01-23 14:21:43,556 INFO L226 Difference]: Without dead ends: 93 [2018-01-23 14:21:43,557 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 [2018-01-23 14:21:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-23 14:21:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-23 14:21:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:21:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-23 14:21:43,568 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-23 14:21:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:43,568 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-23 14:21:43,568 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-23 14:21:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:21:43,570 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:43,570 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] [2018-01-23 14:21:43,570 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:43,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-23 14:21:43,570 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:43,571 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:43,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,572 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,582 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:43,582 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:43,582 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 [2018-01-23 14:21:43,587 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:43,607 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:43,665 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:43,666 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:43,666 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:43,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:43,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:43,666 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-23 14:21:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:43,762 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-23 14:21:43,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:43,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:21:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:43,764 INFO L225 Difference]: With dead ends: 95 [2018-01-23 14:21:43,765 INFO L226 Difference]: Without dead ends: 86 [2018-01-23 14:21:43,765 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 [2018-01-23 14:21:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-23 14:21:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-23 14:21:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:21:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-23 14:21:43,775 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-23 14:21:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:43,775 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-23 14:21:43,776 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-23 14:21:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:21:43,777 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:43,777 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] [2018-01-23 14:21:43,777 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:43,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-23 14:21:43,778 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:43,778 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:43,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,779 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,787 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:43,787 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:43,787 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 [2018-01-23 14:21:43,801 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:43,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:43,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:43,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:43,897 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:43,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:43,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:43,897 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-23 14:21:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:43,959 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-23 14:21:43,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:43,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:21:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:43,961 INFO L225 Difference]: With dead ends: 110 [2018-01-23 14:21:43,961 INFO L226 Difference]: Without dead ends: 101 [2018-01-23 14:21:43,962 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 [2018-01-23 14:21:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-23 14:21:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-23 14:21:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:21:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-23 14:21:43,972 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-23 14:21:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:43,973 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-23 14:21:43,973 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-23 14:21:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:21:43,974 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:43,974 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] [2018-01-23 14:21:43,975 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:43,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-23 14:21:43,975 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:43,975 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:43,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,976 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:43,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:43,983 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:43,984 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:43,984 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 [2018-01-23 14:21:43,996 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:44,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:44,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:44,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:44,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:44,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:44,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:44,105 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-23 14:21:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:44,143 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-23 14:21:44,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:44,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:21:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:44,144 INFO L225 Difference]: With dead ends: 69 [2018-01-23 14:21:44,144 INFO L226 Difference]: Without dead ends: 60 [2018-01-23 14:21:44,144 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 [2018-01-23 14:21:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-23 14:21:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-23 14:21:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-23 14:21:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-23 14:21:44,149 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-23 14:21:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:44,149 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-23 14:21:44,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-23 14:21:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-23 14:21:44,150 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:44,150 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] [2018-01-23 14:21:44,150 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-23 14:21:44,150 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:44,151 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:44,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,157 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:44,157 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:44,157 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 [2018-01-23 14:21:44,164 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:44,244 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:21:44,264 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:44,272 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:44,272 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:44,289 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:44,289 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:44,289 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:44,289 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:44,289 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:44,289 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:44,290 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:44,290 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:21:44,290 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-23 14:21:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:21:44,293 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:44,293 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:21:44,293 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-23 14:21:44,293 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:44,294 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:44,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,295 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,302 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:44,302 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:44,302 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) [2018-01-23 14:21:44,317 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:21:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:44,337 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:44,436 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:44,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:21:44,437 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:21:44,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:21:44,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:21:44,437 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-23 14:21:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:44,503 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-23 14:21:44,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:21:44,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-23 14:21:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:44,505 INFO L225 Difference]: With dead ends: 60 [2018-01-23 14:21:44,506 INFO L226 Difference]: Without dead ends: 33 [2018-01-23 14:21:44,506 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 [2018-01-23 14:21:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-23 14:21:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-23 14:21:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-23 14:21:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-23 14:21:44,510 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-23 14:21:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:44,510 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-23 14:21:44,511 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:21:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-23 14:21:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-23 14:21:44,511 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:44,512 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] [2018-01-23 14:21:44,512 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-23 14:21:44,512 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:44,512 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:44,513 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,513 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,513 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,520 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:44,520 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:44,520 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 [2018-01-23 14:21:44,533 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:44,548 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:44,587 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:44,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:21:44,587 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:21:44,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:21:44,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:21:44,588 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-23 14:21:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:44,633 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-23 14:21:44,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:21:44,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-23 14:21:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:44,634 INFO L225 Difference]: With dead ends: 52 [2018-01-23 14:21:44,635 INFO L226 Difference]: Without dead ends: 38 [2018-01-23 14:21:44,635 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 [2018-01-23 14:21:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-23 14:21:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-23 14:21:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-23 14:21:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-23 14:21:44,639 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-23 14:21:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:44,640 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-23 14:21:44,640 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:21:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-23 14:21:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:21:44,641 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:44,641 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] [2018-01-23 14:21:44,641 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-23 14:21:44,641 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:44,642 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:44,642 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,643 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,648 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:44,649 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:44,649 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 [2018-01-23 14:21:44,657 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:44,675 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:44,720 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:44,720 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:44,720 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:44,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:44,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:44,721 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-01-23 14:21:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:44,781 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-01-23 14:21:44,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:44,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-23 14:21:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:44,782 INFO L225 Difference]: With dead ends: 98 [2018-01-23 14:21:44,783 INFO L226 Difference]: Without dead ends: 91 [2018-01-23 14:21:44,783 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 [2018-01-23 14:21:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-23 14:21:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2018-01-23 14:21:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:21:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:21:44,789 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-23 14:21:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:44,790 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:21:44,790 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:21:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:21:44,791 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:44,791 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] [2018-01-23 14:21:44,791 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-23 14:21:44,791 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:44,792 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:44,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,793 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,799 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:44,799 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:44,799 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 [2018-01-23 14:21:44,805 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:44,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:44,912 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:44,912 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:44,913 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:44,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:44,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:44,913 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-23 14:21:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:44,963 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-23 14:21:44,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:44,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-23 14:21:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:44,964 INFO L225 Difference]: With dead ends: 91 [2018-01-23 14:21:44,964 INFO L226 Difference]: Without dead ends: 84 [2018-01-23 14:21:44,965 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 [2018-01-23 14:21:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-23 14:21:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2018-01-23 14:21:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:21:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:21:44,970 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-23 14:21:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:44,971 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:21:44,971 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:21:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:21:44,972 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:44,972 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] [2018-01-23 14:21:44,972 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:44,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-23 14:21:44,972 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:44,973 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:44,973 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,974 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:44,980 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:44,980 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:44,980 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 [2018-01-23 14:21:44,986 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:45,000 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:45,043 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:45,043 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:21:45,044 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:21:45,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:21:45,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:21:45,044 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-23 14:21:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:45,101 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-01-23 14:21:45,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:21:45,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-23 14:21:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:45,102 INFO L225 Difference]: With dead ends: 106 [2018-01-23 14:21:45,103 INFO L226 Difference]: Without dead ends: 99 [2018-01-23 14:21:45,103 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 [2018-01-23 14:21:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-23 14:21:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2018-01-23 14:21:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:21:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:21:45,109 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-23 14:21:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:45,109 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:21:45,109 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:21:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:21:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:21:45,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:45,110 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] [2018-01-23 14:21:45,111 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-23 14:21:45,111 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:45,111 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:45,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:45,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:45,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:45,118 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:21:45,118 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:21:45,118 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 [2018-01-23 14:21:45,130 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:45,144 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:21:45,213 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 [2018-01-23 14:21:45,227 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 [2018-01-23 14:21:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:21:45,266 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:45,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:21:45,266 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:21:45,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:21:45,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-01-23 14:21:45,267 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-01-23 14:21:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:45,311 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-23 14:21:45,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:21:45,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-23 14:21:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:45,312 INFO L225 Difference]: With dead ends: 52 [2018-01-23 14:21:45,312 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:21:45,312 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 [2018-01-23 14:21:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:21:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:21:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:21:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:21:45,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-23 14:21:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:45,313 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:21:45,314 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:21:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:21:45,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:21:45,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:21:45 BoogieIcfgContainer [2018-01-23 14:21:45,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:21:45,318 INFO L168 Benchmark]: Toolchain (without parser) took 3401.76 ms. Allocated memory was 308.3 MB in the beginning and 480.2 MB in the end (delta: 172.0 MB). Free memory was 267.2 MB in the beginning and 332.8 MB in the end (delta: -65.6 MB). Peak memory consumption was 106.3 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:45,320 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 308.3 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:21:45,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.91 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 257.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:45,320 INFO L168 Benchmark]: Boogie Preprocessor took 31.19 ms. Allocated memory is still 308.3 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:45,321 INFO L168 Benchmark]: RCFGBuilder took 257.14 ms. Allocated memory is still 308.3 MB. Free memory was 255.2 MB in the beginning and 238.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:45,321 INFO L168 Benchmark]: TraceAbstraction took 2898.52 ms. Allocated memory was 308.3 MB in the beginning and 480.2 MB in the end (delta: 172.0 MB). Free memory was 238.3 MB in the beginning and 332.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 77.4 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:45,324 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 308.3 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.91 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 257.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.19 ms. Allocated memory is still 308.3 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 257.14 ms. Allocated memory is still 308.3 MB. Free memory was 255.2 MB in the beginning and 238.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2898.52 ms. Allocated memory was 308.3 MB in the beginning and 480.2 MB in the end (delta: 172.0 MB). Free memory was 238.3 MB in the beginning and 332.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 77.4 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