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/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 22:07:08,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 22:07:08,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 22:07:08,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 22:07:08,778 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 22:07:08,779 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 22:07:08,780 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 22:07:08,782 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 22:07:08,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 22:07:08,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 22:07:08,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 22:07:08,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 22:07:08,787 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 22:07:08,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 22:07:08,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 22:07:08,792 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 22:07:08,794 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 22:07:08,796 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 22:07:08,798 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 22:07:08,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 22:07:08,801 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 22:07:08,806 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 22:07:08,807 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 22:07:08,807 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-20 22:07:08,815 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 22:07:08,816 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 22:07:08,817 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 22:07:08,817 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 22:07:08,817 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 22:07:08,817 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 22:07:08,817 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 22:07:08,818 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 22:07:08,818 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 22:07:08,818 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 22:07:08,818 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 22:07:08,818 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 22:07:08,818 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 22:07:08,818 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 22:07:08,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 22:07:08,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 22:07:08,820 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 22:07:08,820 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 22:07:08,820 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 22:07:08,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 22:07:08,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 22:07:08,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 22:07:08,822 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 22:07:08,822 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 22:07:08,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 22:07:08,865 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 22:07:08,868 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 22:07:08,869 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 22:07:08,869 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 22:07:08,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i [2018-01-20 22:07:09,084 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 22:07:09,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 22:07:09,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 22:07:09,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 22:07:09,095 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 22:07:09,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50990cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09, skipping insertion in model container [2018-01-20 22:07:09,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,117 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:07:09,158 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:07:09,274 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:07:09,299 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:07:09,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09 WrapperNode [2018-01-20 22:07:09,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 22:07:09,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 22:07:09,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 22:07:09,312 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 22:07:09,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... [2018-01-20 22:07:09,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 22:07:09,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 22:07:09,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 22:07:09,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 22:07:09,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 22:07:09,421 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 22:07:09,421 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 22:07:09,421 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-20 22:07:09,421 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-20 22:07:09,422 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-20 22:07:09,422 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 22:07:09,422 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 22:07:09,422 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 22:07:09,422 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 22:07:09,422 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 22:07:09,423 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 22:07:09,423 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 22:07:09,423 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 22:07:09,423 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 22:07:09,423 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 22:07:09,423 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 22:07:09,424 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-20 22:07:09,424 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-20 22:07:09,424 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-20 22:07:09,424 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 22:07:09,424 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 22:07:09,424 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 22:07:09,939 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 22:07:09,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:09 BoogieIcfgContainer [2018-01-20 22:07:09,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 22:07:09,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 22:07:09,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 22:07:09,944 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 22:07:09,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:07:09" (1/3) ... [2018-01-20 22:07:09,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c09d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:09, skipping insertion in model container [2018-01-20 22:07:09,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:09" (2/3) ... [2018-01-20 22:07:09,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c09d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:09, skipping insertion in model container [2018-01-20 22:07:09,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:09" (3/3) ... [2018-01-20 22:07:09,948 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01_true-valid-memsafety.i [2018-01-20 22:07:09,956 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 22:07:09,964 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-20 22:07:10,003 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:10,004 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:10,004 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:10,004 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:10,004 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:10,004 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:10,004 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:10,004 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-20 22:07:10,005 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-20 22:07:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 22:07:10,031 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:10,032 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:10,032 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:10,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1561242995, now seen corresponding path program 1 times [2018-01-20 22:07:10,037 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:10,038 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:10,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,078 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:10,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:10,145 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:10,228 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:10,228 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 22:07:10,230 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:10,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:10,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:10,334 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2018-01-20 22:07:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:10,382 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2018-01-20 22:07:10,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:10,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-20 22:07:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:10,392 INFO L225 Difference]: With dead ends: 248 [2018-01-20 22:07:10,392 INFO L226 Difference]: Without dead ends: 96 [2018-01-20 22:07:10,396 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 [2018-01-20 22:07:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-20 22:07:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-01-20 22:07:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-20 22:07:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-20 22:07:10,433 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 25 [2018-01-20 22:07:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:10,433 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-20 22:07:10,433 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-20 22:07:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 22:07:10,435 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:10,435 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:10,435 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:10,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1948874992, now seen corresponding path program 1 times [2018-01-20 22:07:10,436 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:10,436 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:10,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,437 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:10,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:10,462 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:10,544 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:10,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 22:07:10,545 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 22:07:10,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 22:07:10,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:10,546 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 4 states. [2018-01-20 22:07:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:10,588 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-20 22:07:10,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 22:07:10,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-20 22:07:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:10,590 INFO L225 Difference]: With dead ends: 234 [2018-01-20 22:07:10,590 INFO L226 Difference]: Without dead ends: 146 [2018-01-20 22:07:10,592 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-20 22:07:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-01-20 22:07:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-20 22:07:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2018-01-20 22:07:10,601 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 27 [2018-01-20 22:07:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:10,601 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2018-01-20 22:07:10,602 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 22:07:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2018-01-20 22:07:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-20 22:07:10,602 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:10,602 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:10,603 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash -245124692, now seen corresponding path program 1 times [2018-01-20 22:07:10,603 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:10,603 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:10,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,604 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:10,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:10,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:10,672 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:10,673 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:10,673 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:10,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:10,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:10,674 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 3 states. [2018-01-20 22:07:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:10,718 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2018-01-20 22:07:10,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:10,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-20 22:07:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:10,721 INFO L225 Difference]: With dead ends: 147 [2018-01-20 22:07:10,721 INFO L226 Difference]: Without dead ends: 146 [2018-01-20 22:07:10,721 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-20 22:07:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-20 22:07:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-20 22:07:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2018-01-20 22:07:10,735 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 29 [2018-01-20 22:07:10,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:10,736 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2018-01-20 22:07:10,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:10,736 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2018-01-20 22:07:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-20 22:07:10,738 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:10,738 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:10,738 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1224197024, now seen corresponding path program 1 times [2018-01-20 22:07:10,739 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:10,739 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:10,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,740 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:10,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:10,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:10,872 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:10,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 22:07:10,873 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:10,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:10,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:10,873 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 3 states. [2018-01-20 22:07:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:10,926 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2018-01-20 22:07:10,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:10,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-01-20 22:07:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:10,929 INFO L225 Difference]: With dead ends: 298 [2018-01-20 22:07:10,929 INFO L226 Difference]: Without dead ends: 160 [2018-01-20 22:07:10,930 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 [2018-01-20 22:07:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-20 22:07:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-01-20 22:07:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-20 22:07:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-20 22:07:10,942 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 43 [2018-01-20 22:07:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:10,943 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-20 22:07:10,943 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-20 22:07:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-20 22:07:10,945 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:10,945 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:10,945 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:10,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1546322841, now seen corresponding path program 1 times [2018-01-20 22:07:10,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:10,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:10,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,947 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:10,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:10,972 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:11,016 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:11,016 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 [2018-01-20 22:07:11,028 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:11,082 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:11,133 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:11,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-01-20 22:07:11,134 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 22:07:11,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 22:07:11,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:11,134 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand 5 states. [2018-01-20 22:07:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:11,156 INFO L93 Difference]: Finished difference Result 316 states and 353 transitions. [2018-01-20 22:07:11,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:07:11,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-01-20 22:07:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:11,158 INFO L225 Difference]: With dead ends: 316 [2018-01-20 22:07:11,158 INFO L226 Difference]: Without dead ends: 174 [2018-01-20 22:07:11,159 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-20 22:07:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2018-01-20 22:07:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-20 22:07:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2018-01-20 22:07:11,171 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 50 [2018-01-20 22:07:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:11,172 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2018-01-20 22:07:11,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 22:07:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2018-01-20 22:07:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-20 22:07:11,174 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:11,174 INFO L322 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:11,175 INFO L371 AbstractCegarLoop]: === Iteration 6 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1302825344, now seen corresponding path program 2 times [2018-01-20 22:07:11,175 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:11,175 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:11,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:11,176 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:11,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:11,203 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:11,278 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:11,278 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 [2018-01-20 22:07:11,290 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:07:11,324 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:11,353 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:11,355 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:11,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:11,409 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:11,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-20 22:07:11,410 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 22:07:11,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 22:07:11,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-20 22:07:11,411 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand 6 states. [2018-01-20 22:07:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:11,444 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2018-01-20 22:07:11,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 22:07:11,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-01-20 22:07:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:11,446 INFO L225 Difference]: With dead ends: 344 [2018-01-20 22:07:11,446 INFO L226 Difference]: Without dead ends: 188 [2018-01-20 22:07:11,447 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-20 22:07:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-20 22:07:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2018-01-20 22:07:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-20 22:07:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2018-01-20 22:07:11,458 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 57 [2018-01-20 22:07:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:11,459 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2018-01-20 22:07:11,459 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 22:07:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2018-01-20 22:07:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-01-20 22:07:11,462 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:11,462 INFO L322 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:11,462 INFO L371 AbstractCegarLoop]: === Iteration 7 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1322589767, now seen corresponding path program 3 times [2018-01-20 22:07:11,463 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:11,463 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:11,464 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:11,464 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:11,464 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:11,500 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:11,609 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:11,609 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 [2018-01-20 22:07:11,627 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:07:11,652 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:11,670 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:11,726 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:11,760 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:11,773 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:11,777 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:11,826 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:11,827 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-01-20 22:07:11,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-20 22:07:11,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-20 22:07:11,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-20 22:07:11,828 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 7 states. [2018-01-20 22:07:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:11,866 INFO L93 Difference]: Finished difference Result 372 states and 409 transitions. [2018-01-20 22:07:11,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 22:07:11,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-01-20 22:07:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:11,868 INFO L225 Difference]: With dead ends: 372 [2018-01-20 22:07:11,868 INFO L226 Difference]: Without dead ends: 202 [2018-01-20 22:07:11,869 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-20 22:07:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-20 22:07:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2018-01-20 22:07:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-20 22:07:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 208 transitions. [2018-01-20 22:07:11,879 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 208 transitions. Word has length 64 [2018-01-20 22:07:11,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:11,880 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 208 transitions. [2018-01-20 22:07:11,880 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-20 22:07:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 208 transitions. [2018-01-20 22:07:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-20 22:07:11,881 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:11,882 INFO L322 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:11,882 INFO L371 AbstractCegarLoop]: === Iteration 8 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:11,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1826064224, now seen corresponding path program 4 times [2018-01-20 22:07:11,882 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:11,882 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:11,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:11,883 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:11,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:11,905 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:12,027 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:12,027 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 [2018-01-20 22:07:12,035 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:07:12,249 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:12,254 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:12,301 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:12,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-01-20 22:07:12,301 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-20 22:07:12,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-20 22:07:12,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-20 22:07:12,302 INFO L87 Difference]: Start difference. First operand 192 states and 208 transitions. Second operand 8 states. [2018-01-20 22:07:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:12,393 INFO L93 Difference]: Finished difference Result 400 states and 437 transitions. [2018-01-20 22:07:12,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-20 22:07:12,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2018-01-20 22:07:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:12,395 INFO L225 Difference]: With dead ends: 400 [2018-01-20 22:07:12,395 INFO L226 Difference]: Without dead ends: 216 [2018-01-20 22:07:12,396 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-20 22:07:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-20 22:07:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2018-01-20 22:07:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-20 22:07:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2018-01-20 22:07:12,406 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 71 [2018-01-20 22:07:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:12,406 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2018-01-20 22:07:12,406 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-20 22:07:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2018-01-20 22:07:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-20 22:07:12,408 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:12,408 INFO L322 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:12,408 INFO L371 AbstractCegarLoop]: === Iteration 9 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:12,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1568376793, now seen corresponding path program 5 times [2018-01-20 22:07:12,409 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:12,409 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:12,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:12,410 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:12,410 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:12,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:12,567 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:12,567 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 [2018-01-20 22:07:12,581 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:07:12,603 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:12,608 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:12,613 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:12,624 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:12,634 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:12,674 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:12,678 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:12,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:12,748 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:12,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-01-20 22:07:12,749 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 22:07:12,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 22:07:12,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-20 22:07:12,750 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 9 states. [2018-01-20 22:07:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:12,863 INFO L93 Difference]: Finished difference Result 428 states and 465 transitions. [2018-01-20 22:07:12,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 22:07:12,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2018-01-20 22:07:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:12,866 INFO L225 Difference]: With dead ends: 428 [2018-01-20 22:07:12,866 INFO L226 Difference]: Without dead ends: 230 [2018-01-20 22:07:12,867 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-20 22:07:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-20 22:07:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2018-01-20 22:07:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-20 22:07:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 236 transitions. [2018-01-20 22:07:12,877 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 236 transitions. Word has length 78 [2018-01-20 22:07:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:12,878 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 236 transitions. [2018-01-20 22:07:12,878 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 22:07:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 236 transitions. [2018-01-20 22:07:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-01-20 22:07:12,879 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:12,880 INFO L322 BasicCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:12,880 INFO L371 AbstractCegarLoop]: === Iteration 10 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:12,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586944, now seen corresponding path program 6 times [2018-01-20 22:07:12,880 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:12,880 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:12,881 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:12,881 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:12,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:12,909 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:13,067 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:13,067 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 [2018-01-20 22:07:13,080 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:07:13,114 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:13,148 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:13,235 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:13,303 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:13,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:13,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:14,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:14,442 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:14,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:14,518 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:14,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-01-20 22:07:14,519 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-20 22:07:14,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-20 22:07:14,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-20 22:07:14,520 INFO L87 Difference]: Start difference. First operand 220 states and 236 transitions. Second operand 10 states. [2018-01-20 22:07:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:14,597 INFO L93 Difference]: Finished difference Result 456 states and 493 transitions. [2018-01-20 22:07:14,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-20 22:07:14,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-01-20 22:07:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:14,600 INFO L225 Difference]: With dead ends: 456 [2018-01-20 22:07:14,600 INFO L226 Difference]: Without dead ends: 244 [2018-01-20 22:07:14,601 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-20 22:07:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-20 22:07:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2018-01-20 22:07:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-20 22:07:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 250 transitions. [2018-01-20 22:07:14,612 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 250 transitions. Word has length 85 [2018-01-20 22:07:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:14,612 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 250 transitions. [2018-01-20 22:07:14,612 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-20 22:07:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 250 transitions. [2018-01-20 22:07:14,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-20 22:07:14,614 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:14,614 INFO L322 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:14,614 INFO L371 AbstractCegarLoop]: === Iteration 11 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:14,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1071712775, now seen corresponding path program 7 times [2018-01-20 22:07:14,615 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:14,615 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:14,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:14,616 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:14,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:14,641 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:14,755 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:14,755 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 [2018-01-20 22:07:14,762 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:14,805 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:14,892 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:14,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-01-20 22:07:14,892 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-20 22:07:14,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-20 22:07:14,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-20 22:07:14,893 INFO L87 Difference]: Start difference. First operand 234 states and 250 transitions. Second operand 11 states. [2018-01-20 22:07:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:14,954 INFO L93 Difference]: Finished difference Result 484 states and 521 transitions. [2018-01-20 22:07:14,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-20 22:07:14,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2018-01-20 22:07:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:14,956 INFO L225 Difference]: With dead ends: 484 [2018-01-20 22:07:14,956 INFO L226 Difference]: Without dead ends: 258 [2018-01-20 22:07:14,957 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-20 22:07:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-20 22:07:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2018-01-20 22:07:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-01-20 22:07:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 264 transitions. [2018-01-20 22:07:14,964 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 264 transitions. Word has length 92 [2018-01-20 22:07:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:14,965 INFO L432 AbstractCegarLoop]: Abstraction has 248 states and 264 transitions. [2018-01-20 22:07:14,965 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-20 22:07:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 264 transitions. [2018-01-20 22:07:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-20 22:07:14,967 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:14,967 INFO L322 BasicCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:14,967 INFO L371 AbstractCegarLoop]: === Iteration 12 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:14,967 INFO L82 PathProgramCache]: Analyzing trace with hash -214947040, now seen corresponding path program 8 times [2018-01-20 22:07:14,967 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:14,967 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:14,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:14,968 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:14,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:14,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:15,111 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:15,111 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 [2018-01-20 22:07:15,116 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:07:15,137 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:15,167 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:15,169 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:15,173 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:15,265 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:15,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-01-20 22:07:15,266 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-20 22:07:15,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-20 22:07:15,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-20 22:07:15,267 INFO L87 Difference]: Start difference. First operand 248 states and 264 transitions. Second operand 12 states. [2018-01-20 22:07:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:15,403 INFO L93 Difference]: Finished difference Result 512 states and 549 transitions. [2018-01-20 22:07:15,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-20 22:07:15,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-01-20 22:07:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:15,404 INFO L225 Difference]: With dead ends: 512 [2018-01-20 22:07:15,404 INFO L226 Difference]: Without dead ends: 272 [2018-01-20 22:07:15,406 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-20 22:07:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-20 22:07:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2018-01-20 22:07:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-01-20 22:07:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 278 transitions. [2018-01-20 22:07:15,414 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 278 transitions. Word has length 99 [2018-01-20 22:07:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:15,415 INFO L432 AbstractCegarLoop]: Abstraction has 262 states and 278 transitions. [2018-01-20 22:07:15,415 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-20 22:07:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 278 transitions. [2018-01-20 22:07:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-20 22:07:15,416 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:15,416 INFO L322 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:15,416 INFO L371 AbstractCegarLoop]: === Iteration 13 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:15,416 INFO L82 PathProgramCache]: Analyzing trace with hash -862508007, now seen corresponding path program 9 times [2018-01-20 22:07:15,416 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:15,416 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:15,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:15,417 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:15,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:15,437 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:15,688 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:15,688 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 [2018-01-20 22:07:15,696 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:07:15,727 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:15,757 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:15,850 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:15,938 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:16,204 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:16,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:16,527 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:17,408 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:18,440 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:21,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:21,080 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:21,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:21,128 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:21,128 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-01-20 22:07:21,129 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-20 22:07:21,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-20 22:07:21,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-20 22:07:21,129 INFO L87 Difference]: Start difference. First operand 262 states and 278 transitions. Second operand 13 states. [2018-01-20 22:07:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:21,283 INFO L93 Difference]: Finished difference Result 540 states and 577 transitions. [2018-01-20 22:07:21,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-20 22:07:21,284 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2018-01-20 22:07:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:21,285 INFO L225 Difference]: With dead ends: 540 [2018-01-20 22:07:21,285 INFO L226 Difference]: Without dead ends: 286 [2018-01-20 22:07:21,286 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-20 22:07:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-20 22:07:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 276. [2018-01-20 22:07:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-01-20 22:07:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 292 transitions. [2018-01-20 22:07:21,293 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 292 transitions. Word has length 106 [2018-01-20 22:07:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:21,293 INFO L432 AbstractCegarLoop]: Abstraction has 276 states and 292 transitions. [2018-01-20 22:07:21,293 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-20 22:07:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 292 transitions. [2018-01-20 22:07:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-20 22:07:21,294 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:21,294 INFO L322 BasicCegarLoop]: trace histogram [11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:21,295 INFO L371 AbstractCegarLoop]: === Iteration 14 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:21,295 INFO L82 PathProgramCache]: Analyzing trace with hash -346763008, now seen corresponding path program 10 times [2018-01-20 22:07:21,295 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:21,295 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:21,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:21,296 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:21,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:21,314 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:21,702 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:21,702 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 [2018-01-20 22:07:21,708 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:07:23,349 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:23,353 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:23,411 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:23,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-01-20 22:07:23,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-20 22:07:23,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-20 22:07:23,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:07:23,412 INFO L87 Difference]: Start difference. First operand 276 states and 292 transitions. Second operand 14 states. [2018-01-20 22:07:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:23,476 INFO L93 Difference]: Finished difference Result 568 states and 605 transitions. [2018-01-20 22:07:23,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-20 22:07:23,477 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 113 [2018-01-20 22:07:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:23,479 INFO L225 Difference]: With dead ends: 568 [2018-01-20 22:07:23,479 INFO L226 Difference]: Without dead ends: 300 [2018-01-20 22:07:23,480 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:07:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-20 22:07:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2018-01-20 22:07:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-01-20 22:07:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 306 transitions. [2018-01-20 22:07:23,491 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 306 transitions. Word has length 113 [2018-01-20 22:07:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:23,491 INFO L432 AbstractCegarLoop]: Abstraction has 290 states and 306 transitions. [2018-01-20 22:07:23,491 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-20 22:07:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 306 transitions. [2018-01-20 22:07:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-20 22:07:23,493 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:23,493 INFO L322 BasicCegarLoop]: trace histogram [12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:23,493 INFO L371 AbstractCegarLoop]: === Iteration 15 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:23,494 INFO L82 PathProgramCache]: Analyzing trace with hash 719727161, now seen corresponding path program 11 times [2018-01-20 22:07:23,494 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:23,494 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:23,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:23,495 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:23,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:23,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:23,760 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:23,760 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 [2018-01-20 22:07:23,765 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:07:23,777 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,779 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,784 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,820 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:23,901 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:24,168 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:24,353 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:24,644 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:24,649 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:24,656 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:24,709 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:24,709 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-01-20 22:07:24,710 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-20 22:07:24,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-20 22:07:24,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-20 22:07:24,710 INFO L87 Difference]: Start difference. First operand 290 states and 306 transitions. Second operand 15 states. [2018-01-20 22:07:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:24,798 INFO L93 Difference]: Finished difference Result 596 states and 633 transitions. [2018-01-20 22:07:24,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-20 22:07:24,798 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 120 [2018-01-20 22:07:24,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:24,800 INFO L225 Difference]: With dead ends: 596 [2018-01-20 22:07:24,801 INFO L226 Difference]: Without dead ends: 314 [2018-01-20 22:07:24,802 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-20 22:07:24,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-01-20 22:07:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 304. [2018-01-20 22:07:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-20 22:07:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 320 transitions. [2018-01-20 22:07:24,814 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 320 transitions. Word has length 120 [2018-01-20 22:07:24,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:24,814 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 320 transitions. [2018-01-20 22:07:24,814 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-20 22:07:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 320 transitions. [2018-01-20 22:07:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-01-20 22:07:24,816 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:24,816 INFO L322 BasicCegarLoop]: trace histogram [13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:24,816 INFO L371 AbstractCegarLoop]: === Iteration 16 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash -537809184, now seen corresponding path program 12 times [2018-01-20 22:07:24,817 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:24,817 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:24,818 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:24,818 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:24,818 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:24,845 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:25,156 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:25,156 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 [2018-01-20 22:07:25,167 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:07:25,199 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:25,227 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:25,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:25,334 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:25,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:25,822 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:27,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:30,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:32,704 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:35,372 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:39,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:44,856 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:53,528 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:07:53,531 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:53,539 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:53,613 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:53,614 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-01-20 22:07:53,614 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-20 22:07:53,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-20 22:07:53,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-20 22:07:53,615 INFO L87 Difference]: Start difference. First operand 304 states and 320 transitions. Second operand 16 states. [2018-01-20 22:07:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:53,718 INFO L93 Difference]: Finished difference Result 624 states and 661 transitions. [2018-01-20 22:07:53,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-20 22:07:53,718 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2018-01-20 22:07:53,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:53,720 INFO L225 Difference]: With dead ends: 624 [2018-01-20 22:07:53,720 INFO L226 Difference]: Without dead ends: 328 [2018-01-20 22:07:53,721 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-20 22:07:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-20 22:07:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 318. [2018-01-20 22:07:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-01-20 22:07:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 334 transitions. [2018-01-20 22:07:53,728 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 334 transitions. Word has length 127 [2018-01-20 22:07:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:53,728 INFO L432 AbstractCegarLoop]: Abstraction has 318 states and 334 transitions. [2018-01-20 22:07:53,728 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-20 22:07:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 334 transitions. [2018-01-20 22:07:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-20 22:07:53,729 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:53,729 INFO L322 BasicCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:53,729 INFO L371 AbstractCegarLoop]: === Iteration 17 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:53,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1468919897, now seen corresponding path program 13 times [2018-01-20 22:07:53,730 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:53,730 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:53,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:53,730 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:53,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:53,750 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:53,915 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:53,915 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 [2018-01-20 22:07:53,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:53,981 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:54,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:54,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-01-20 22:07:54,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 22:07:54,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 22:07:54,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-20 22:07:54,046 INFO L87 Difference]: Start difference. First operand 318 states and 334 transitions. Second operand 17 states. [2018-01-20 22:07:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:54,124 INFO L93 Difference]: Finished difference Result 652 states and 689 transitions. [2018-01-20 22:07:54,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-20 22:07:54,124 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2018-01-20 22:07:54,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:54,126 INFO L225 Difference]: With dead ends: 652 [2018-01-20 22:07:54,126 INFO L226 Difference]: Without dead ends: 342 [2018-01-20 22:07:54,127 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-20 22:07:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-20 22:07:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2018-01-20 22:07:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-20 22:07:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 348 transitions. [2018-01-20 22:07:54,135 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 348 transitions. Word has length 134 [2018-01-20 22:07:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:54,135 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 348 transitions. [2018-01-20 22:07:54,135 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-20 22:07:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 348 transitions. [2018-01-20 22:07:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-01-20 22:07:54,136 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:54,137 INFO L322 BasicCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:54,137 INFO L371 AbstractCegarLoop]: === Iteration 18 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1639660352, now seen corresponding path program 14 times [2018-01-20 22:07:54,137 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:54,137 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:54,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:54,138 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:54,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:54,157 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:54,382 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:54,382 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 [2018-01-20 22:07:54,390 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:07:54,432 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:54,462 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:07:54,467 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:07:54,472 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:54,532 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:07:54,532 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-01-20 22:07:54,533 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-20 22:07:54,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-20 22:07:54,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-20 22:07:54,533 INFO L87 Difference]: Start difference. First operand 332 states and 348 transitions. Second operand 18 states. [2018-01-20 22:07:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:54,690 INFO L93 Difference]: Finished difference Result 680 states and 717 transitions. [2018-01-20 22:07:54,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-20 22:07:54,691 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2018-01-20 22:07:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:54,693 INFO L225 Difference]: With dead ends: 680 [2018-01-20 22:07:54,693 INFO L226 Difference]: Without dead ends: 356 [2018-01-20 22:07:54,694 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-20 22:07:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-01-20 22:07:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 346. [2018-01-20 22:07:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-01-20 22:07:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 362 transitions. [2018-01-20 22:07:54,703 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 362 transitions. Word has length 141 [2018-01-20 22:07:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:54,703 INFO L432 AbstractCegarLoop]: Abstraction has 346 states and 362 transitions. [2018-01-20 22:07:54,703 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-20 22:07:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 362 transitions. [2018-01-20 22:07:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-20 22:07:54,704 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:54,705 INFO L322 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:54,705 INFO L371 AbstractCegarLoop]: === Iteration 19 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:54,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1013940615, now seen corresponding path program 15 times [2018-01-20 22:07:54,705 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:54,705 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:54,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:54,706 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:07:54,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:54,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:55,078 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:55,079 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 [2018-01-20 22:07:55,089 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:07:55,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:55,137 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:55,200 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:55,260 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:55,374 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:55,552 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:55,842 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:56,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:56,393 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:56,525 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:56,948 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:59,329 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:08:01,832 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:08:13,842 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown