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/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:39:07,069 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:39:07,071 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:39:07,087 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:39:07,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:39:07,089 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:39:07,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:39:07,092 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:39:07,095 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:39:07,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:39:07,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:39:07,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:39:07,098 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:39:07,100 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:39:07,101 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:39:07,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:39:07,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:39:07,109 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:39:07,110 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:39:07,112 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:39:07,114 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:39:07,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:39:07,121 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:39:07,121 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 14:39:07,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:39:07,133 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:39:07,134 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:39:07,134 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:39:07,134 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:39:07,134 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:39:07,134 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:39:07,135 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:39:07,135 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:39:07,136 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:39:07,136 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:39:07,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:39:07,136 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:39:07,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:39:07,137 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:39:07,137 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:39:07,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:39:07,137 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:39:07,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:39:07,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:39:07,138 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:39:07,138 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:39:07,138 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:39:07,138 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:39:07,138 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:39:07,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:39:07,139 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:39:07,139 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:39:07,139 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:39:07,139 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:39:07,140 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:39:07,140 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:39:07,140 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:39:07,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:39:07,140 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:39:07,141 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:39:07,142 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:39:07,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:39:07,193 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:39:07,198 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:39:07,200 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:39:07,200 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:39:07,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-01-23 14:39:07,336 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:39:07,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:39:07,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:39:07,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:39:07,346 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:39:07,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa16d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07, skipping insertion in model container [2018-01-23 14:39:07,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,364 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:39:07,378 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:39:07,492 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:39:07,508 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:39:07,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07 WrapperNode [2018-01-23 14:39:07,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:39:07,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:39:07,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:39:07,515 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:39:07,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (1/1) ... [2018-01-23 14:39:07,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:39:07,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:39:07,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:39:07,547 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:39:07,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (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 14:39:07,598 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:39:07,599 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:39:07,599 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-23 14:39:07,599 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:39:07,599 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:39:07,600 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:39:07,601 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:39:07,766 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:39:07,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:39:07 BoogieIcfgContainer [2018-01-23 14:39:07,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:39:07,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:39:07,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:39:07,769 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:39:07,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:39:07" (1/3) ... [2018-01-23 14:39:07,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b65508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:39:07, skipping insertion in model container [2018-01-23 14:39:07,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:39:07" (2/3) ... [2018-01-23 14:39:07,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b65508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:39:07, skipping insertion in model container [2018-01-23 14:39:07,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:39:07" (3/3) ... [2018-01-23 14:39:07,773 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-01-23 14:39:07,779 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:39:07,787 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:39:07,826 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:39:07,826 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:39:07,826 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:39:07,826 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:39:07,826 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:39:07,827 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:39:07,827 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:39:07,827 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:39:07,827 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:39:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:39:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:39:07,854 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:07,855 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:39:07,855 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:39:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-23 14:39:07,863 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:07,863 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:07,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:07,908 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:07,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:39:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:39:07,967 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:39:07,973 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:39:07,979 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:39:07,979 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:39:07,979 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:39:07,979 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:39:07,980 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:39:07,980 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:39:07,980 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:39:07,980 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-23 14:39:07,980 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:39:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:39:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-23 14:39:07,982 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:07,982 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:07,983 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-23 14:39:07,983 INFO L82 PathProgramCache]: Analyzing trace with hash 352444009, now seen corresponding path program 1 times [2018-01-23 14:39:07,983 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:07,983 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:07,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:07,984 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:07,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:08,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:08,039 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 14:39:08,041 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:39:08,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:39:08,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:39:08,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:39:08,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:39:08,055 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-23 14:39:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:08,078 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-01-23 14:39:08,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:39:08,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-23 14:39:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:08,089 INFO L225 Difference]: With dead ends: 72 [2018-01-23 14:39:08,089 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:39:08,093 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:39:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:39:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:39:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:39:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:39:08,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-23 14:39:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:08,190 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:39:08,190 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:39:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:39:08,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:39:08,193 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:39:08,193 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:39:08,194 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:39:08,194 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:39:08,194 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:39:08,194 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:39:08,194 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:39:08,194 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:39:08,195 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:39:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:39:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-23 14:39:08,198 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:08,198 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:08,198 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1481761889, now seen corresponding path program 1 times [2018-01-23 14:39:08,199 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:08,199 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:08,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,200 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:08,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:08,211 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:08,225 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 14:39:08,225 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:39:08,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:39:08,225 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:39:08,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:39:08,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:39:08,226 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-23 14:39:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:08,233 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-01-23 14:39:08,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:39:08,233 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-23 14:39:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:08,235 INFO L225 Difference]: With dead ends: 72 [2018-01-23 14:39:08,235 INFO L226 Difference]: Without dead ends: 37 [2018-01-23 14:39:08,236 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:39:08,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-23 14:39:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-23 14:39:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-23 14:39:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-23 14:39:08,249 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2018-01-23 14:39:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:08,249 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-23 14:39:08,249 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:39:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-23 14:39:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:39:08,250 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:08,250 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 14:39:08,251 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:08,251 INFO L82 PathProgramCache]: Analyzing trace with hash 499012364, now seen corresponding path program 1 times [2018-01-23 14:39:08,251 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:08,251 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:08,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,253 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:08,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:08,267 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:08,305 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 14:39:08,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:39:08,305 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:39:08,307 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:39:08,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:39:08,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:39:08,308 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 3 states. [2018-01-23 14:39:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:08,369 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-01-23 14:39:08,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:39:08,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-01-23 14:39:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:08,374 INFO L225 Difference]: With dead ends: 66 [2018-01-23 14:39:08,374 INFO L226 Difference]: Without dead ends: 51 [2018-01-23 14:39:08,375 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:39:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-23 14:39:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-01-23 14:39:08,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-23 14:39:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-01-23 14:39:08,388 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 19 [2018-01-23 14:39:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:08,388 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-01-23 14:39:08,388 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:39:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-01-23 14:39:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-23 14:39:08,390 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:08,390 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] [2018-01-23 14:39:08,390 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1504830404, now seen corresponding path program 1 times [2018-01-23 14:39:08,390 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:08,391 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:08,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,392 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:08,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:08,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:39:08,455 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:08,455 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:08,468 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:08,496 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:39:08,604 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:39:08,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-01-23 14:39:08,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:39:08,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:39:08,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:39:08,605 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2018-01-23 14:39:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:08,769 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2018-01-23 14:39:08,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:39:08,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-23 14:39:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:08,772 INFO L225 Difference]: With dead ends: 104 [2018-01-23 14:39:08,772 INFO L226 Difference]: Without dead ends: 70 [2018-01-23 14:39:08,773 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:39:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-23 14:39:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2018-01-23 14:39:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:39:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:39:08,782 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 31 [2018-01-23 14:39:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:08,783 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:39:08,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:39:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:39:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-23 14:39:08,786 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:08,786 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:08,786 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1862415341, now seen corresponding path program 1 times [2018-01-23 14:39:08,787 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:08,787 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:08,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,788 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:08,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:08,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-01-23 14:39:08,895 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:09,037 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:09,042 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:09,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-23 14:39:09,136 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:09,136 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-01-23 14:39:09,137 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:39:09,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:39:09,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:39:09,138 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 9 states. [2018-01-23 14:39:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:09,370 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2018-01-23 14:39:09,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-23 14:39:09,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-01-23 14:39:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:09,372 INFO L225 Difference]: With dead ends: 133 [2018-01-23 14:39:09,373 INFO L226 Difference]: Without dead ends: 89 [2018-01-23 14:39:09,374 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:39:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-23 14:39:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2018-01-23 14:39:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-23 14:39:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2018-01-23 14:39:09,384 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 52 [2018-01-23 14:39:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:09,384 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2018-01-23 14:39:09,385 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:39:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2018-01-23 14:39:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-23 14:39:09,386 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:09,387 INFO L322 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:09,387 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:09,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1345357476, now seen corresponding path program 2 times [2018-01-23 14:39:09,387 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:09,388 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:09,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:09,389 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:09,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:09,422 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-01-23 14:39:09,516 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:09,517 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:09,522 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:39:09,535 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:09,553 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:09,556 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:09,561 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 118 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-01-23 14:39:09,633 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:09,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-01-23 14:39:09,634 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:39:09,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:39:09,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:39:09,635 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 12 states. [2018-01-23 14:39:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:09,898 INFO L93 Difference]: Finished difference Result 185 states and 209 transitions. [2018-01-23 14:39:09,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:39:09,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2018-01-23 14:39:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:09,901 INFO L225 Difference]: With dead ends: 185 [2018-01-23 14:39:09,901 INFO L226 Difference]: Without dead ends: 135 [2018-01-23 14:39:09,902 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:39:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-23 14:39:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2018-01-23 14:39:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-23 14:39:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2018-01-23 14:39:09,914 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 83 [2018-01-23 14:39:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:09,914 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2018-01-23 14:39:09,914 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:39:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2018-01-23 14:39:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-01-23 14:39:09,917 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:09,917 INFO L322 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:09,917 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash -389182277, now seen corresponding path program 3 times [2018-01-23 14:39:09,917 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:09,917 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:09,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:09,918 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:09,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:09,951 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-01-23 14:39:10,109 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:10,109 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:10,116 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:39:10,132 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:10,137 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:10,143 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:10,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:10,157 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:10,159 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:10,165 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 183 proven. 21 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-01-23 14:39:10,286 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:10,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-01-23 14:39:10,287 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:39:10,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:39:10,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:39:10,287 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 12 states. [2018-01-23 14:39:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:10,625 INFO L93 Difference]: Finished difference Result 236 states and 269 transitions. [2018-01-23 14:39:10,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-23 14:39:10,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 119 [2018-01-23 14:39:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:10,628 INFO L225 Difference]: With dead ends: 236 [2018-01-23 14:39:10,629 INFO L226 Difference]: Without dead ends: 207 [2018-01-23 14:39:10,630 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:39:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-23 14:39:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 139. [2018-01-23 14:39:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-23 14:39:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2018-01-23 14:39:10,647 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 157 transitions. Word has length 119 [2018-01-23 14:39:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:10,648 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 157 transitions. [2018-01-23 14:39:10,648 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:39:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 157 transitions. [2018-01-23 14:39:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-23 14:39:10,651 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:10,652 INFO L322 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:10,652 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:10,652 INFO L82 PathProgramCache]: Analyzing trace with hash 349526166, now seen corresponding path program 4 times [2018-01-23 14:39:10,652 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:10,652 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:10,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:10,653 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:10,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:10,686 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2018-01-23 14:39:10,832 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:10,832 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:10,841 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:39:10,889 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:10,897 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 635 proven. 38 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-01-23 14:39:11,024 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:11,024 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 18 [2018-01-23 14:39:11,025 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:39:11,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:39:11,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:39:11,025 INFO L87 Difference]: Start difference. First operand 139 states and 157 transitions. Second operand 18 states. [2018-01-23 14:39:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:11,379 INFO L93 Difference]: Finished difference Result 364 states and 420 transitions. [2018-01-23 14:39:11,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-23 14:39:11,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2018-01-23 14:39:11,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:11,383 INFO L225 Difference]: With dead ends: 364 [2018-01-23 14:39:11,383 INFO L226 Difference]: Without dead ends: 280 [2018-01-23 14:39:11,385 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2018-01-23 14:39:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-01-23 14:39:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 179. [2018-01-23 14:39:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-23 14:39:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 200 transitions. [2018-01-23 14:39:11,408 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 200 transitions. Word has length 160 [2018-01-23 14:39:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:11,408 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 200 transitions. [2018-01-23 14:39:11,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:39:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 200 transitions. [2018-01-23 14:39:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-01-23 14:39:11,413 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:11,413 INFO L322 BasicCegarLoop]: trace histogram [29, 23, 23, 23, 23, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:11,413 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2057287179, now seen corresponding path program 5 times [2018-01-23 14:39:11,414 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:11,414 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:11,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:11,415 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:11,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:11,447 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2018-01-23 14:39:11,624 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:11,624 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:11,632 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:39:11,646 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,649 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,650 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,653 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,657 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,663 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,667 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,673 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:11,675 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:11,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 948 proven. 95 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-01-23 14:39:11,839 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:11,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2018-01-23 14:39:11,839 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-23 14:39:11,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-23 14:39:11,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2018-01-23 14:39:11,840 INFO L87 Difference]: Start difference. First operand 179 states and 200 transitions. Second operand 20 states. [2018-01-23 14:39:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:12,383 INFO L93 Difference]: Finished difference Result 394 states and 441 transitions. [2018-01-23 14:39:12,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-23 14:39:12,384 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 201 [2018-01-23 14:39:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:12,385 INFO L225 Difference]: With dead ends: 394 [2018-01-23 14:39:12,386 INFO L226 Difference]: Without dead ends: 231 [2018-01-23 14:39:12,387 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=1242, Unknown=0, NotChecked=0, Total=1482 [2018-01-23 14:39:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-01-23 14:39:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 180. [2018-01-23 14:39:12,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-23 14:39:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 197 transitions. [2018-01-23 14:39:12,401 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 197 transitions. Word has length 201 [2018-01-23 14:39:12,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:12,402 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 197 transitions. [2018-01-23 14:39:12,402 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-23 14:39:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 197 transitions. [2018-01-23 14:39:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-01-23 14:39:12,404 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:12,404 INFO L322 BasicCegarLoop]: trace histogram [36, 29, 29, 29, 29, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:12,404 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:12,405 INFO L82 PathProgramCache]: Analyzing trace with hash 927615722, now seen corresponding path program 6 times [2018-01-23 14:39:12,405 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:12,405 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:12,405 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:12,406 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:12,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:12,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2681 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2018-01-23 14:39:12,746 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:12,746 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:12,759 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:39:12,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,808 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,810 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,814 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,817 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,825 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,833 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,846 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,854 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,860 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:12,871 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:12,880 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2681 backedges. 764 proven. 60 refuted. 0 times theorem prover too weak. 1857 trivial. 0 not checked. [2018-01-23 14:39:13,009 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:13,010 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2018-01-23 14:39:13,010 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-23 14:39:13,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-23 14:39:13,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-01-23 14:39:13,010 INFO L87 Difference]: Start difference. First operand 180 states and 197 transitions. Second operand 17 states. [2018-01-23 14:39:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:13,350 INFO L93 Difference]: Finished difference Result 398 states and 451 transitions. [2018-01-23 14:39:13,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-23 14:39:13,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 242 [2018-01-23 14:39:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:13,353 INFO L225 Difference]: With dead ends: 398 [2018-01-23 14:39:13,353 INFO L226 Difference]: Without dead ends: 357 [2018-01-23 14:39:13,353 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-01-23 14:39:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-01-23 14:39:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 233. [2018-01-23 14:39:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-23 14:39:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 260 transitions. [2018-01-23 14:39:13,374 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 260 transitions. Word has length 242 [2018-01-23 14:39:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:13,375 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 260 transitions. [2018-01-23 14:39:13,375 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-23 14:39:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 260 transitions. [2018-01-23 14:39:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-01-23 14:39:13,379 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:13,380 INFO L322 BasicCegarLoop]: trace histogram [46, 38, 38, 38, 38, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:13,380 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:13,380 INFO L82 PathProgramCache]: Analyzing trace with hash -965692109, now seen corresponding path program 7 times [2018-01-23 14:39:13,380 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:13,380 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:13,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:13,382 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:13,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:13,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2018-01-23 14:39:13,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:13,692 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:13,702 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:13,781 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 2748 proven. 87 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2018-01-23 14:39:14,048 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:14,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 25 [2018-01-23 14:39:14,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-23 14:39:14,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-23 14:39:14,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2018-01-23 14:39:14,050 INFO L87 Difference]: Start difference. First operand 233 states and 260 transitions. Second operand 25 states. [2018-01-23 14:39:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:14,674 INFO L93 Difference]: Finished difference Result 553 states and 632 transitions. [2018-01-23 14:39:14,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-23 14:39:14,674 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 298 [2018-01-23 14:39:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:14,678 INFO L225 Difference]: With dead ends: 553 [2018-01-23 14:39:14,678 INFO L226 Difference]: Without dead ends: 439 [2018-01-23 14:39:14,679 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=1274, Unknown=0, NotChecked=0, Total=1560 [2018-01-23 14:39:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-01-23 14:39:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 283. [2018-01-23 14:39:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-23 14:39:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 313 transitions. [2018-01-23 14:39:14,705 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 313 transitions. Word has length 298 [2018-01-23 14:39:14,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:14,706 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 313 transitions. [2018-01-23 14:39:14,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-23 14:39:14,706 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 313 transitions. [2018-01-23 14:39:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-01-23 14:39:14,708 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:14,709 INFO L322 BasicCegarLoop]: trace histogram [56, 47, 47, 47, 47, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:14,709 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:14,709 INFO L82 PathProgramCache]: Analyzing trace with hash -822628892, now seen corresponding path program 8 times [2018-01-23 14:39:14,709 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:14,709 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:14,710 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:14,710 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:14,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:14,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6665 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 6467 trivial. 0 not checked. [2018-01-23 14:39:15,087 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:15,087 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:15,092 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:39:15,112 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:15,144 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:15,150 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:15,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6665 backedges. 3802 proven. 60 refuted. 0 times theorem prover too weak. 2803 trivial. 0 not checked. [2018-01-23 14:39:15,366 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:15,366 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2018-01-23 14:39:15,367 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-23 14:39:15,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-23 14:39:15,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-01-23 14:39:15,367 INFO L87 Difference]: Start difference. First operand 283 states and 313 transitions. Second operand 24 states. [2018-01-23 14:39:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:15,799 INFO L93 Difference]: Finished difference Result 525 states and 580 transitions. [2018-01-23 14:39:15,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-23 14:39:15,799 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 354 [2018-01-23 14:39:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:15,801 INFO L225 Difference]: With dead ends: 525 [2018-01-23 14:39:15,801 INFO L226 Difference]: Without dead ends: 399 [2018-01-23 14:39:15,802 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2018-01-23 14:39:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-01-23 14:39:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 284. [2018-01-23 14:39:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-01-23 14:39:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 314 transitions. [2018-01-23 14:39:15,818 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 314 transitions. Word has length 354 [2018-01-23 14:39:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:15,819 INFO L432 AbstractCegarLoop]: Abstraction has 284 states and 314 transitions. [2018-01-23 14:39:15,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-23 14:39:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 314 transitions. [2018-01-23 14:39:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-01-23 14:39:15,820 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:15,821 INFO L322 BasicCegarLoop]: trace histogram [65, 55, 55, 55, 55, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:15,821 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash -370507531, now seen corresponding path program 9 times [2018-01-23 14:39:15,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:15,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:15,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:15,822 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:15,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:15,855 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9040 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 8795 trivial. 0 not checked. [2018-01-23 14:39:16,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:16,222 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:16,228 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:39:16,250 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,253 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,257 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,260 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,265 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,269 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,274 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,280 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,286 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:16,287 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:16,293 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9040 backedges. 1985 proven. 119 refuted. 0 times theorem prover too weak. 6936 trivial. 0 not checked. [2018-01-23 14:39:16,493 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:16,493 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2018-01-23 14:39:16,494 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-23 14:39:16,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-23 14:39:16,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2018-01-23 14:39:16,494 INFO L87 Difference]: Start difference. First operand 284 states and 314 transitions. Second operand 22 states. [2018-01-23 14:39:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:17,140 INFO L93 Difference]: Finished difference Result 636 states and 724 transitions. [2018-01-23 14:39:17,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-23 14:39:17,140 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 405 [2018-01-23 14:39:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:17,144 INFO L225 Difference]: With dead ends: 636 [2018-01-23 14:39:17,144 INFO L226 Difference]: Without dead ends: 583 [2018-01-23 14:39:17,146 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2018-01-23 14:39:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2018-01-23 14:39:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 347. [2018-01-23 14:39:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-23 14:39:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 390 transitions. [2018-01-23 14:39:17,175 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 390 transitions. Word has length 405 [2018-01-23 14:39:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:17,177 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 390 transitions. [2018-01-23 14:39:17,177 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-23 14:39:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 390 transitions. [2018-01-23 14:39:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-01-23 14:39:17,181 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:17,182 INFO L322 BasicCegarLoop]: trace histogram [78, 67, 67, 67, 67, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:17,182 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:17,182 INFO L82 PathProgramCache]: Analyzing trace with hash 593814198, now seen corresponding path program 10 times [2018-01-23 14:39:17,182 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:17,182 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:17,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:17,183 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:17,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:17,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13156 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 12859 trivial. 0 not checked. [2018-01-23 14:39:17,847 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:17,847 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:17,854 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:39:17,968 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:17,980 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13156 backedges. 7833 proven. 156 refuted. 0 times theorem prover too weak. 5167 trivial. 0 not checked. [2018-01-23 14:39:18,610 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:18,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20] total 32 [2018-01-23 14:39:18,611 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-23 14:39:18,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-23 14:39:18,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2018-01-23 14:39:18,612 INFO L87 Difference]: Start difference. First operand 347 states and 390 transitions. Second operand 32 states. [2018-01-23 14:39:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:19,693 INFO L93 Difference]: Finished difference Result 824 states and 941 transitions. [2018-01-23 14:39:19,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-23 14:39:19,694 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 476 [2018-01-23 14:39:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:19,697 INFO L225 Difference]: With dead ends: 824 [2018-01-23 14:39:19,697 INFO L226 Difference]: Without dead ends: 677 [2018-01-23 14:39:19,699 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=465, Invalid=2187, Unknown=0, NotChecked=0, Total=2652 [2018-01-23 14:39:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2018-01-23 14:39:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 407. [2018-01-23 14:39:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-01-23 14:39:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 454 transitions. [2018-01-23 14:39:19,721 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 454 transitions. Word has length 476 [2018-01-23 14:39:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:19,722 INFO L432 AbstractCegarLoop]: Abstraction has 407 states and 454 transitions. [2018-01-23 14:39:19,722 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-23 14:39:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 454 transitions. [2018-01-23 14:39:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2018-01-23 14:39:19,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:19,725 INFO L322 BasicCegarLoop]: trace histogram [91, 79, 79, 79, 79, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:19,725 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:19,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1155544977, now seen corresponding path program 11 times [2018-01-23 14:39:19,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:19,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:19,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:19,726 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:19,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:19,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18051 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 17697 trivial. 0 not checked. [2018-01-23 14:39:20,272 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:20,272 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:20,277 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:39:20,316 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,325 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,380 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,394 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,408 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:20,411 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:20,424 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18051 backedges. 10148 proven. 679 refuted. 0 times theorem prover too weak. 7224 trivial. 0 not checked. [2018-01-23 14:39:20,881 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:20,882 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 34 [2018-01-23 14:39:20,882 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-23 14:39:20,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-23 14:39:20,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2018-01-23 14:39:20,883 INFO L87 Difference]: Start difference. First operand 407 states and 454 transitions. Second operand 34 states. [2018-01-23 14:39:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:22,926 INFO L93 Difference]: Finished difference Result 728 states and 809 transitions. [2018-01-23 14:39:22,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-23 14:39:22,926 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 547 [2018-01-23 14:39:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:22,932 INFO L225 Difference]: With dead ends: 728 [2018-01-23 14:39:22,932 INFO L226 Difference]: Without dead ends: 569 [2018-01-23 14:39:22,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=661, Invalid=3761, Unknown=0, NotChecked=0, Total=4422 [2018-01-23 14:39:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2018-01-23 14:39:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 408. [2018-01-23 14:39:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-01-23 14:39:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 455 transitions. [2018-01-23 14:39:22,973 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 455 transitions. Word has length 547 [2018-01-23 14:39:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:22,974 INFO L432 AbstractCegarLoop]: Abstraction has 408 states and 455 transitions. [2018-01-23 14:39:22,974 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-23 14:39:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 455 transitions. [2018-01-23 14:39:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-01-23 14:39:22,979 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:22,979 INFO L322 BasicCegarLoop]: trace histogram [102, 89, 89, 89, 89, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:22,980 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash -832911260, now seen corresponding path program 12 times [2018-01-23 14:39:22,980 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:22,980 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:22,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:22,981 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:22,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:23,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22778 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 22362 trivial. 0 not checked. [2018-01-23 14:39:24,011 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:24,012 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:24,019 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:39:24,065 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,071 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,076 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,084 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,124 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,133 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,141 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,153 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,167 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,177 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,186 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,207 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,219 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,232 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,245 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,260 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,273 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,302 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,317 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:24,319 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:24,332 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 22778 backedges. 4086 proven. 198 refuted. 0 times theorem prover too weak. 18494 trivial. 0 not checked. [2018-01-23 14:39:25,038 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:25,038 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2018-01-23 14:39:25,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-23 14:39:25,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-23 14:39:25,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2018-01-23 14:39:25,040 INFO L87 Difference]: Start difference. First operand 408 states and 455 transitions. Second operand 27 states. [2018-01-23 14:39:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:25,960 INFO L93 Difference]: Finished difference Result 931 states and 1064 transitions. [2018-01-23 14:39:25,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-23 14:39:25,960 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 608 [2018-01-23 14:39:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:25,967 INFO L225 Difference]: With dead ends: 931 [2018-01-23 14:39:25,967 INFO L226 Difference]: Without dead ends: 866 [2018-01-23 14:39:25,969 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2018-01-23 14:39:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2018-01-23 14:39:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 481. [2018-01-23 14:39:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-01-23 14:39:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 544 transitions. [2018-01-23 14:39:26,015 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 544 transitions. Word has length 608 [2018-01-23 14:39:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:26,016 INFO L432 AbstractCegarLoop]: Abstraction has 481 states and 544 transitions. [2018-01-23 14:39:26,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-23 14:39:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 544 transitions. [2018-01-23 14:39:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-01-23 14:39:26,023 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:26,023 INFO L322 BasicCegarLoop]: trace histogram [118, 104, 104, 104, 104, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:26,023 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash -658584109, now seen corresponding path program 13 times [2018-01-23 14:39:26,024 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:26,024 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:26,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:26,025 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:26,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:26,084 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30721 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 30238 trivial. 0 not checked. [2018-01-23 14:39:26,962 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:26,962 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:26,969 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:27,104 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30721 backedges. 17822 proven. 245 refuted. 0 times theorem prover too weak. 12654 trivial. 0 not checked. [2018-01-23 14:39:28,425 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:28,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 39 [2018-01-23 14:39:28,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-23 14:39:28,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-23 14:39:28,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2018-01-23 14:39:28,428 INFO L87 Difference]: Start difference. First operand 481 states and 544 transitions. Second operand 39 states. [2018-01-23 14:39:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:30,051 INFO L93 Difference]: Finished difference Result 1147 states and 1310 transitions. [2018-01-23 14:39:30,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-23 14:39:30,052 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 694 [2018-01-23 14:39:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:30,056 INFO L225 Difference]: With dead ends: 1147 [2018-01-23 14:39:30,056 INFO L226 Difference]: Without dead ends: 967 [2018-01-23 14:39:30,058 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=687, Invalid=3345, Unknown=0, NotChecked=0, Total=4032 [2018-01-23 14:39:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-01-23 14:39:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 551. [2018-01-23 14:39:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2018-01-23 14:39:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 619 transitions. [2018-01-23 14:39:30,091 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 619 transitions. Word has length 694 [2018-01-23 14:39:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:30,091 INFO L432 AbstractCegarLoop]: Abstraction has 551 states and 619 transitions. [2018-01-23 14:39:30,091 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-23 14:39:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 619 transitions. [2018-01-23 14:39:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2018-01-23 14:39:30,096 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:30,096 INFO L322 BasicCegarLoop]: trace histogram [134, 119, 119, 119, 119, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:30,096 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash -516686818, now seen corresponding path program 14 times [2018-01-23 14:39:30,097 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:30,097 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:30,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:30,097 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:30,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:30,142 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39860 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 39305 trivial. 0 not checked. [2018-01-23 14:39:31,257 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:31,257 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:31,262 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:39:31,303 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:31,388 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:31,402 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:31,415 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 39860 backedges. 22346 proven. 198 refuted. 0 times theorem prover too weak. 17316 trivial. 0 not checked. [2018-01-23 14:39:32,068 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:32,068 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2018-01-23 14:39:32,069 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-23 14:39:32,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-23 14:39:32,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2018-01-23 14:39:32,070 INFO L87 Difference]: Start difference. First operand 551 states and 619 transitions. Second operand 38 states. [2018-01-23 14:39:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:32,922 INFO L93 Difference]: Finished difference Result 1077 states and 1200 transitions. [2018-01-23 14:39:32,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-23 14:39:32,922 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 780 [2018-01-23 14:39:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:32,925 INFO L225 Difference]: With dead ends: 1077 [2018-01-23 14:39:32,925 INFO L226 Difference]: Without dead ends: 885 [2018-01-23 14:39:32,927 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=690, Invalid=3216, Unknown=0, NotChecked=0, Total=3906 [2018-01-23 14:39:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2018-01-23 14:39:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 552. [2018-01-23 14:39:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2018-01-23 14:39:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 620 transitions. [2018-01-23 14:39:32,978 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 620 transitions. Word has length 780 [2018-01-23 14:39:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:32,979 INFO L432 AbstractCegarLoop]: Abstraction has 552 states and 620 transitions. [2018-01-23 14:39:32,979 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-23 14:39:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 620 transitions. [2018-01-23 14:39:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-01-23 14:39:32,987 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:32,988 INFO L322 BasicCegarLoop]: trace histogram [147, 131, 131, 131, 131, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:32,988 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:32,988 INFO L82 PathProgramCache]: Analyzing trace with hash -337943249, now seen corresponding path program 15 times [2018-01-23 14:39:32,988 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:32,988 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:32,989 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:32,989 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:32,989 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:33,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 48119 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 47487 trivial. 0 not checked. [2018-01-23 14:39:34,460 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:34,460 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:34,465 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:39:34,502 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,505 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,508 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,512 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,523 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,527 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,532 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,539 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,546 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,554 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,564 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,573 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:39:34,575 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:34,587 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48119 backedges. 7307 proven. 297 refuted. 0 times theorem prover too weak. 40515 trivial. 0 not checked. [2018-01-23 14:39:35,059 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:35,060 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 32 [2018-01-23 14:39:35,060 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-23 14:39:35,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-23 14:39:35,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2018-01-23 14:39:35,061 INFO L87 Difference]: Start difference. First operand 552 states and 620 transitions. Second operand 32 states. [2018-01-23 14:39:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:35,673 INFO L93 Difference]: Finished difference Result 1283 states and 1471 transitions. [2018-01-23 14:39:35,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-23 14:39:35,673 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 851 [2018-01-23 14:39:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:35,677 INFO L225 Difference]: With dead ends: 1283 [2018-01-23 14:39:35,678 INFO L226 Difference]: Without dead ends: 1206 [2018-01-23 14:39:35,680 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2018-01-23 14:39:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2018-01-23 14:39:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 635. [2018-01-23 14:39:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2018-01-23 14:39:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 722 transitions. [2018-01-23 14:39:35,741 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 722 transitions. Word has length 851 [2018-01-23 14:39:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:35,742 INFO L432 AbstractCegarLoop]: Abstraction has 635 states and 722 transitions. [2018-01-23 14:39:35,742 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-23 14:39:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 722 transitions. [2018-01-23 14:39:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-01-23 14:39:35,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:35,753 INFO L322 BasicCegarLoop]: trace histogram [166, 149, 149, 149, 149, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:35,753 INFO L371 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:35,753 INFO L82 PathProgramCache]: Analyzing trace with hash -478055978, now seen corresponding path program 16 times [2018-01-23 14:39:35,754 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:35,754 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:35,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:35,755 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:35,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:35,833 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 61726 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 61012 trivial. 0 not checked. [2018-01-23 14:39:37,254 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:37,254 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:37,260 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:39:37,453 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:37,465 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 61726 backedges. 35127 proven. 354 refuted. 0 times theorem prover too weak. 26245 trivial. 0 not checked. [2018-01-23 14:39:38,622 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:38,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28] total 46 [2018-01-23 14:39:38,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-23 14:39:38,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-23 14:39:38,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2018-01-23 14:39:38,624 INFO L87 Difference]: Start difference. First operand 635 states and 722 transitions. Second operand 46 states. [2018-01-23 14:39:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:39,951 INFO L93 Difference]: Finished difference Result 1522 states and 1739 transitions. [2018-01-23 14:39:39,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-23 14:39:39,951 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 952 [2018-01-23 14:39:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:39,955 INFO L225 Difference]: With dead ends: 1522 [2018-01-23 14:39:39,956 INFO L226 Difference]: Without dead ends: 1309 [2018-01-23 14:39:39,959 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=952, Invalid=4748, Unknown=0, NotChecked=0, Total=5700 [2018-01-23 14:39:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2018-01-23 14:39:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 715. [2018-01-23 14:39:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2018-01-23 14:39:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 808 transitions. [2018-01-23 14:39:40,029 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 808 transitions. Word has length 952 [2018-01-23 14:39:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:40,030 INFO L432 AbstractCegarLoop]: Abstraction has 715 states and 808 transitions. [2018-01-23 14:39:40,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-23 14:39:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 808 transitions. [2018-01-23 14:39:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2018-01-23 14:39:40,042 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:40,043 INFO L322 BasicCegarLoop]: trace histogram [185, 167, 167, 167, 167, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:40,043 INFO L371 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash -216903191, now seen corresponding path program 17 times [2018-01-23 14:39:40,043 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:40,043 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:40,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:40,044 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:40,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:40,129 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:41,721 INFO L134 CoverageAnalysis]: Checked inductivity of 77036 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 76235 trivial. 0 not checked. [2018-01-23 14:39:41,722 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:41,722 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:39:41,727 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:39:41,768 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,772 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,779 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,782 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,785 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,788 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,793 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,798 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,800 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,810 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,821 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,836 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,889 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:41,977 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:42,005 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:42,008 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:42,022 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-01-23 14:39:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 77036 backedges. 42642 proven. 1892 refuted. 0 times theorem prover too weak. 32502 trivial. 0 not checked. [2018-01-23 14:39:43,193 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:43,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29] total 48 [2018-01-23 14:39:43,194 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-23 14:39:43,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-23 14:39:43,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1884, Unknown=0, NotChecked=0, Total=2256 [2018-01-23 14:39:43,195 INFO L87 Difference]: Start difference. First operand 715 states and 808 transitions. Second operand 48 states. [2018-01-23 14:39:43,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:39:43,196 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-23 14:39:43,199 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:39:43,199 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:39:43,199 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:39:43,199 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:39:43,199 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:39:43,199 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:39:43,200 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:39:43,200 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:39:43,200 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:39:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:39:43,201 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-23 14:39:43,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:39:43 BoogieIcfgContainer [2018-01-23 14:39:43,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:39:43,203 INFO L168 Benchmark]: Toolchain (without parser) took 35866.14 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 264.5 MB in the beginning and 1.3 GB in the end (delta: -991.5 MB). Peak memory consumption was 631.7 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:43,205 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 303.6 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:39:43,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.95 ms. Allocated memory is still 303.6 MB. Free memory was 262.5 MB in the beginning and 254.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:43,205 INFO L168 Benchmark]: Boogie Preprocessor took 31.06 ms. Allocated memory is still 303.6 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:43,206 INFO L168 Benchmark]: RCFGBuilder took 220.24 ms. Allocated memory is still 303.6 MB. Free memory was 252.5 MB in the beginning and 237.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:43,206 INFO L168 Benchmark]: TraceAbstraction took 35434.88 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 237.5 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 604.8 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:43,208 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 303.6 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 173.95 ms. Allocated memory is still 303.6 MB. Free memory was 262.5 MB in the beginning and 254.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.06 ms. Allocated memory is still 303.6 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 220.24 ms. Allocated memory is still 303.6 MB. Free memory was 252.5 MB in the beginning and 237.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 35434.88 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 237.5 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 604.8 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) * 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 4 procedures, 41 locations, 4 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=41occurred 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 - PositiveResult [Line: 14]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was constructing difference of abstraction (715states) and interpolant automaton (currently 2 states, 48 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 35.0s OverallTime, 20 OverallIterations, 185 TraceHistogramMax, 12.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1003 SDtfs, 6633 SDslu, 10762 SDs, 0 SdLazy, 11558 SolverSat, 1527 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8379 GetRequests, 7709 SyntacticMatches, 0 SemanticMatches, 670 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=715occurred in iteration=19, 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: 0.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 3671 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 15848 NumberOfCodeBlocks, 14060 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 15810 ConstructedInterpolants, 0 QuantifiedInterpolants, 14389742 SizeOfPredicates, 60 NumberOfNonLiveVariables, 10789 ConjunctsInSsa, 286 ConjunctsInUnsatCore, 38 InterpolantComputations, 3 PerfectInterpolantSequences, 665473/675170 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 23). Cancelled while IsEmpty was searching accepting run (input had 41 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-39-43-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-39-43-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-39-43-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-39-43-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-39-43-217.csv Completed graceful shutdown