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_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 22:06:00,652 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 22:06:00,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 22:06:00,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 22:06:00,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 22:06:00,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 22:06:00,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 22:06:00,671 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 22:06:00,673 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 22:06:00,673 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 22:06:00,674 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 22:06:00,674 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 22:06:00,674 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 22:06:00,676 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 22:06:00,677 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 22:06:00,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 22:06:00,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 22:06:00,683 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 22:06:00,684 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 22:06:00,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 22:06:00,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 22:06:00,693 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 22:06:00,694 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 22:06:00,694 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 22:06:00,704 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 22:06:00,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 22:06:00,705 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 22:06:00,705 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 22:06:00,705 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 22:06:00,706 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 22:06:00,708 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 22:06:00,708 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 22:06:00,709 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 22:06:00,709 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 22:06:00,709 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 22:06:00,709 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 22:06:00,709 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 22:06:00,710 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 22:06:00,710 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 22:06:00,710 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 22:06:00,710 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 22:06:00,710 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 22:06:00,711 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 22:06:00,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 22:06:00,712 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 22:06:00,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 22:06:00,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 22:06:00,712 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 22:06:00,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 22:06:00,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 22:06:00,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 22:06:00,713 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 22:06:00,713 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 22:06:00,713 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 22:06:00,714 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 22:06:00,714 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 22:06:00,714 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 22:06:00,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 22:06:00,714 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 22:06:00,718 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 22:06:00,718 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 22:06:00,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 22:06:00,767 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 22:06:00,771 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 22:06:00,773 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 22:06:00,774 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 22:06:00,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_false-valid-memtrack.i [2018-01-20 22:06:00,943 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 22:06:00,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 22:06:00,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 22:06:00,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 22:06:00,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 22:06:00,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:06:00" (1/1) ... [2018-01-20 22:06:00,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d08ce43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:00, skipping insertion in model container [2018-01-20 22:06:00,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:06:00" (1/1) ... [2018-01-20 22:06:01,003 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:06:01,043 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:06:01,166 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:06:01,190 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:06:01,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01 WrapperNode [2018-01-20 22:06:01,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 22:06:01,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 22:06:01,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 22:06:01,201 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 22:06:01,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (1/1) ... [2018-01-20 22:06:01,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 22:06:01,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 22:06:01,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 22:06:01,253 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 22:06:01,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (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 22:06:01,305 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 22:06:01,305 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 22:06:01,305 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-20 22:06:01,305 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-20 22:06:01,305 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-20 22:06:01,306 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 22:06:01,306 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 22:06:01,306 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 22:06:01,306 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 22:06:01,306 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 22:06:01,306 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 22:06:01,307 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 22:06:01,307 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 22:06:01,307 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 22:06:01,307 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 22:06:01,307 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 22:06:01,307 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-20 22:06:01,308 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-20 22:06:01,308 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-20 22:06:01,308 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 22:06:01,308 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 22:06:01,308 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 22:06:01,774 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 22:06:01,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:06:01 BoogieIcfgContainer [2018-01-20 22:06:01,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 22:06:01,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 22:06:01,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 22:06:01,779 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 22:06:01,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:06:00" (1/3) ... [2018-01-20 22:06:01,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e488f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:06:01, skipping insertion in model container [2018-01-20 22:06:01,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:06:01" (2/3) ... [2018-01-20 22:06:01,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e488f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:06:01, skipping insertion in model container [2018-01-20 22:06:01,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:06:01" (3/3) ... [2018-01-20 22:06:01,783 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01_false-valid-memtrack.i [2018-01-20 22:06:01,793 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 22:06:01,802 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-20 22:06:01,852 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:06:01,853 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:06:01,853 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:06:01,853 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:06:01,853 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:06:01,853 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:06:01,854 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:06:01,854 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-20 22:06:01,855 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:06:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-20 22:06:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 22:06:01,886 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:01,888 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 22:06:01,888 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:01,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1561242995, now seen corresponding path program 1 times [2018-01-20 22:06:01,896 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:01,896 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:01,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:01,939 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:01,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:02,013 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:02,096 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 22:06:02,099 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:06:02,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 22:06:02,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:06:02,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:06:02,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:06:02,121 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2018-01-20 22:06:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:02,248 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2018-01-20 22:06:02,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:06:02,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-20 22:06:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:02,258 INFO L225 Difference]: With dead ends: 248 [2018-01-20 22:06:02,258 INFO L226 Difference]: Without dead ends: 96 [2018-01-20 22:06:02,263 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 22:06:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-20 22:06:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-01-20 22:06:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-20 22:06:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-20 22:06:02,303 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 25 [2018-01-20 22:06:02,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:02,303 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-20 22:06:02,303 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:06:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-20 22:06:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 22:06:02,306 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:02,306 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 22:06:02,306 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:02,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1948874992, now seen corresponding path program 1 times [2018-01-20 22:06:02,307 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:02,307 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:02,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:02,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:02,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:02,411 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 22:06:02,411 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:06:02,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 22:06:02,413 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 22:06:02,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 22:06:02,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:06:02,414 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 4 states. [2018-01-20 22:06:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:02,464 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-20 22:06:02,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 22:06:02,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-20 22:06:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:02,467 INFO L225 Difference]: With dead ends: 234 [2018-01-20 22:06:02,468 INFO L226 Difference]: Without dead ends: 146 [2018-01-20 22:06:02,469 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 22:06:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-20 22:06:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-01-20 22:06:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-20 22:06:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2018-01-20 22:06:02,484 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 27 [2018-01-20 22:06:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:02,484 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2018-01-20 22:06:02,484 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 22:06:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2018-01-20 22:06:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-20 22:06:02,486 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:02,486 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 22:06:02,486 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:02,486 INFO L82 PathProgramCache]: Analyzing trace with hash -245124692, now seen corresponding path program 1 times [2018-01-20 22:06:02,486 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:02,486 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:02,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,488 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:02,488 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:02,511 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:02,546 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 22:06:02,546 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:06:02,546 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:06:02,547 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:06:02,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:06:02,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:06:02,548 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 3 states. [2018-01-20 22:06:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:02,631 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2018-01-20 22:06:02,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:06:02,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-20 22:06:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:02,634 INFO L225 Difference]: With dead ends: 147 [2018-01-20 22:06:02,634 INFO L226 Difference]: Without dead ends: 146 [2018-01-20 22:06:02,635 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 22:06:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-20 22:06:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-20 22:06:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-20 22:06:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2018-01-20 22:06:02,647 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 29 [2018-01-20 22:06:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:02,647 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2018-01-20 22:06:02,647 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:06:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2018-01-20 22:06:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-20 22:06:02,649 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:02,650 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 22:06:02,650 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:02,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1224197024, now seen corresponding path program 1 times [2018-01-20 22:06:02,650 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:02,650 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:02,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:02,652 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:02,678 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:02,733 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 22:06:02,734 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:06:02,734 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 22:06:02,734 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:06:02,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:06:02,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:06:02,735 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 3 states. [2018-01-20 22:06:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:02,753 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2018-01-20 22:06:02,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:06:02,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-01-20 22:06:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:02,755 INFO L225 Difference]: With dead ends: 298 [2018-01-20 22:06:02,756 INFO L226 Difference]: Without dead ends: 160 [2018-01-20 22:06:02,757 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 22:06:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-20 22:06:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-01-20 22:06:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-20 22:06:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-20 22:06:02,770 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 43 [2018-01-20 22:06:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:02,770 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-20 22:06:02,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:06:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-20 22:06:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-20 22:06:02,772 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:02,772 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 22:06:02,773 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1546322841, now seen corresponding path program 1 times [2018-01-20 22:06:02,773 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:02,773 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:02,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:02,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:02,802 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:02,862 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 22:06:02,862 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:02,862 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 22:06:02,873 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:02,922 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:02,952 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 22:06:02,972 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:02,973 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-01-20 22:06:02,973 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 22:06:02,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 22:06:02,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:06:02,974 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand 5 states. [2018-01-20 22:06:02,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:02,995 INFO L93 Difference]: Finished difference Result 316 states and 353 transitions. [2018-01-20 22:06:02,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:06:02,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-01-20 22:06:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:02,997 INFO L225 Difference]: With dead ends: 316 [2018-01-20 22:06:02,997 INFO L226 Difference]: Without dead ends: 174 [2018-01-20 22:06:02,998 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 22:06:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-20 22:06:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2018-01-20 22:06:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-20 22:06:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2018-01-20 22:06:03,010 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 50 [2018-01-20 22:06:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:03,010 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2018-01-20 22:06:03,010 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 22:06:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2018-01-20 22:06:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-20 22:06:03,012 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:03,012 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 22:06:03,012 INFO L371 AbstractCegarLoop]: === Iteration 6 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1302825344, now seen corresponding path program 2 times [2018-01-20 22:06:03,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:03,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:03,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:03,014 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:03,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:03,040 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:03,115 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 22:06:03,115 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:03,116 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 22:06:03,126 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:06:03,164 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:03,192 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:03,194 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:03,197 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:03,216 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 22:06:03,237 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:03,237 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-20 22:06:03,238 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 22:06:03,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 22:06:03,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-20 22:06:03,238 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand 6 states. [2018-01-20 22:06:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:03,311 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2018-01-20 22:06:03,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 22:06:03,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-01-20 22:06:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:03,314 INFO L225 Difference]: With dead ends: 344 [2018-01-20 22:06:03,314 INFO L226 Difference]: Without dead ends: 188 [2018-01-20 22:06:03,315 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 22:06:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-20 22:06:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2018-01-20 22:06:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-20 22:06:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2018-01-20 22:06:03,327 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 57 [2018-01-20 22:06:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:03,327 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2018-01-20 22:06:03,328 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 22:06:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2018-01-20 22:06:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-01-20 22:06:03,330 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:03,330 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 22:06:03,331 INFO L371 AbstractCegarLoop]: === Iteration 7 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1322589767, now seen corresponding path program 3 times [2018-01-20 22:06:03,331 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:03,331 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:03,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:03,333 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:03,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:03,359 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:03,458 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 22:06:03,458 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:03,459 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 22:06:03,470 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:06:03,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:03,532 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:03,587 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:03,665 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:03,666 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:03,670 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:03,708 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 22:06:03,743 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:03,743 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-01-20 22:06:03,743 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-20 22:06:03,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-20 22:06:03,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-20 22:06:03,744 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 7 states. [2018-01-20 22:06:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:03,800 INFO L93 Difference]: Finished difference Result 372 states and 409 transitions. [2018-01-20 22:06:03,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 22:06:03,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-01-20 22:06:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:03,803 INFO L225 Difference]: With dead ends: 372 [2018-01-20 22:06:03,803 INFO L226 Difference]: Without dead ends: 202 [2018-01-20 22:06:03,804 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 22:06:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-20 22:06:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2018-01-20 22:06:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-20 22:06:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 208 transitions. [2018-01-20 22:06:03,817 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 208 transitions. Word has length 64 [2018-01-20 22:06:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:03,818 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 208 transitions. [2018-01-20 22:06:03,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-20 22:06:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 208 transitions. [2018-01-20 22:06:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-20 22:06:03,820 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:03,820 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 22:06:03,820 INFO L371 AbstractCegarLoop]: === Iteration 8 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:03,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1826064224, now seen corresponding path program 4 times [2018-01-20 22:06:03,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:03,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:03,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:03,822 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:03,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:03,849 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:03,953 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 22:06:03,953 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:03,953 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 22:06:03,964 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:06:04,081 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:04,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:04,112 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 22:06:04,134 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:04,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-01-20 22:06:04,134 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-20 22:06:04,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-20 22:06:04,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-20 22:06:04,135 INFO L87 Difference]: Start difference. First operand 192 states and 208 transitions. Second operand 8 states. [2018-01-20 22:06:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:04,245 INFO L93 Difference]: Finished difference Result 400 states and 437 transitions. [2018-01-20 22:06:04,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-20 22:06:04,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2018-01-20 22:06:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:04,247 INFO L225 Difference]: With dead ends: 400 [2018-01-20 22:06:04,247 INFO L226 Difference]: Without dead ends: 216 [2018-01-20 22:06:04,248 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 22:06:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-20 22:06:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2018-01-20 22:06:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-20 22:06:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2018-01-20 22:06:04,254 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 71 [2018-01-20 22:06:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:04,255 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2018-01-20 22:06:04,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-20 22:06:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2018-01-20 22:06:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-20 22:06:04,256 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:04,256 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 22:06:04,256 INFO L371 AbstractCegarLoop]: === Iteration 9 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1568376793, now seen corresponding path program 5 times [2018-01-20 22:06:04,256 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:04,257 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:04,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:04,257 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:04,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:04,277 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:04,482 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 22:06:04,482 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:04,482 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 22:06:04,495 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:06:04,511 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:04,526 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:04,539 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:04,546 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:04,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:04,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:04,604 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:04,608 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:04,631 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 22:06:04,651 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:04,652 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-01-20 22:06:04,652 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 22:06:04,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 22:06:04,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-20 22:06:04,652 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 9 states. [2018-01-20 22:06:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:04,724 INFO L93 Difference]: Finished difference Result 428 states and 465 transitions. [2018-01-20 22:06:04,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 22:06:04,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2018-01-20 22:06:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:04,727 INFO L225 Difference]: With dead ends: 428 [2018-01-20 22:06:04,727 INFO L226 Difference]: Without dead ends: 230 [2018-01-20 22:06:04,728 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-20 22:06:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-20 22:06:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2018-01-20 22:06:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-20 22:06:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 236 transitions. [2018-01-20 22:06:04,747 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 236 transitions. Word has length 78 [2018-01-20 22:06:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:04,748 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 236 transitions. [2018-01-20 22:06:04,748 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 22:06:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 236 transitions. [2018-01-20 22:06:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-01-20 22:06:04,749 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:04,750 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 22:06:04,750 INFO L371 AbstractCegarLoop]: === Iteration 10 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586944, now seen corresponding path program 6 times [2018-01-20 22:06:04,750 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:04,750 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:04,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:04,751 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:04,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:04,776 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:04,937 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 22:06:04,937 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:04,937 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 22:06:04,943 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:06:04,973 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:05,005 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:05,078 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:05,147 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:05,216 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:05,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:06,463 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:06,464 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:06,487 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:06,508 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 22:06:06,533 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:06,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-01-20 22:06:06,534 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-20 22:06:06,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-20 22:06:06,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-20 22:06:06,534 INFO L87 Difference]: Start difference. First operand 220 states and 236 transitions. Second operand 10 states. [2018-01-20 22:06:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:06,605 INFO L93 Difference]: Finished difference Result 456 states and 493 transitions. [2018-01-20 22:06:06,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-20 22:06:06,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-01-20 22:06:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:06,607 INFO L225 Difference]: With dead ends: 456 [2018-01-20 22:06:06,608 INFO L226 Difference]: Without dead ends: 244 [2018-01-20 22:06:06,608 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 22:06:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-20 22:06:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2018-01-20 22:06:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-20 22:06:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 250 transitions. [2018-01-20 22:06:06,616 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 250 transitions. Word has length 85 [2018-01-20 22:06:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:06,616 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 250 transitions. [2018-01-20 22:06:06,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-20 22:06:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 250 transitions. [2018-01-20 22:06:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-20 22:06:06,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:06,617 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 22:06:06,617 INFO L371 AbstractCegarLoop]: === Iteration 11 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1071712775, now seen corresponding path program 7 times [2018-01-20 22:06:06,618 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:06,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:06,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:06,618 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:06,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:06,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:06,918 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 22:06:06,918 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:06,918 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 22:06:06,924 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:06,970 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:07,014 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 22:06:07,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:07,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-01-20 22:06:07,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-20 22:06:07,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-20 22:06:07,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-20 22:06:07,046 INFO L87 Difference]: Start difference. First operand 234 states and 250 transitions. Second operand 11 states. [2018-01-20 22:06:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:07,124 INFO L93 Difference]: Finished difference Result 484 states and 521 transitions. [2018-01-20 22:06:07,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-20 22:06:07,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2018-01-20 22:06:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:07,126 INFO L225 Difference]: With dead ends: 484 [2018-01-20 22:06:07,126 INFO L226 Difference]: Without dead ends: 258 [2018-01-20 22:06:07,128 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-20 22:06:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-20 22:06:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2018-01-20 22:06:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-01-20 22:06:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 264 transitions. [2018-01-20 22:06:07,138 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 264 transitions. Word has length 92 [2018-01-20 22:06:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:07,138 INFO L432 AbstractCegarLoop]: Abstraction has 248 states and 264 transitions. [2018-01-20 22:06:07,138 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-20 22:06:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 264 transitions. [2018-01-20 22:06:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-20 22:06:07,139 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:07,140 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 22:06:07,140 INFO L371 AbstractCegarLoop]: === Iteration 12 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:07,140 INFO L82 PathProgramCache]: Analyzing trace with hash -214947040, now seen corresponding path program 8 times [2018-01-20 22:06:07,140 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:07,140 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:07,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:07,141 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:07,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:07,164 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:07,321 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 22:06:07,322 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:07,322 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 22:06:07,331 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:06:07,353 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:07,391 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:07,394 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:07,398 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:07,428 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 22:06:07,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:07,463 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-01-20 22:06:07,463 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-20 22:06:07,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-20 22:06:07,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-20 22:06:07,464 INFO L87 Difference]: Start difference. First operand 248 states and 264 transitions. Second operand 12 states. [2018-01-20 22:06:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:07,562 INFO L93 Difference]: Finished difference Result 512 states and 549 transitions. [2018-01-20 22:06:07,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-20 22:06:07,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-01-20 22:06:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:07,564 INFO L225 Difference]: With dead ends: 512 [2018-01-20 22:06:07,564 INFO L226 Difference]: Without dead ends: 272 [2018-01-20 22:06:07,565 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 22:06:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-20 22:06:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2018-01-20 22:06:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-01-20 22:06:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 278 transitions. [2018-01-20 22:06:07,576 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 278 transitions. Word has length 99 [2018-01-20 22:06:07,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:07,577 INFO L432 AbstractCegarLoop]: Abstraction has 262 states and 278 transitions. [2018-01-20 22:06:07,577 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-20 22:06:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 278 transitions. [2018-01-20 22:06:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-20 22:06:07,578 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:07,578 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 22:06:07,579 INFO L371 AbstractCegarLoop]: === Iteration 13 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:07,579 INFO L82 PathProgramCache]: Analyzing trace with hash -862508007, now seen corresponding path program 9 times [2018-01-20 22:06:07,579 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:07,579 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:07,580 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:07,580 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:07,580 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:07,604 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:07,813 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 22:06:07,813 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:07,813 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 22:06:07,818 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:06:07,841 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:07,858 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:07,889 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:07,987 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:08,093 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:08,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:08,821 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:09,575 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:10,056 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:12,459 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:12,460 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:12,465 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:12,487 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 22:06:12,509 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:12,509 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-01-20 22:06:12,509 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-20 22:06:12,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-20 22:06:12,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-20 22:06:12,510 INFO L87 Difference]: Start difference. First operand 262 states and 278 transitions. Second operand 13 states. [2018-01-20 22:06:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:12,619 INFO L93 Difference]: Finished difference Result 540 states and 577 transitions. [2018-01-20 22:06:12,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-20 22:06:12,620 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2018-01-20 22:06:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:12,621 INFO L225 Difference]: With dead ends: 540 [2018-01-20 22:06:12,622 INFO L226 Difference]: Without dead ends: 286 [2018-01-20 22:06:12,623 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 22:06:12,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-20 22:06:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 276. [2018-01-20 22:06:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-01-20 22:06:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 292 transitions. [2018-01-20 22:06:12,635 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 292 transitions. Word has length 106 [2018-01-20 22:06:12,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:12,635 INFO L432 AbstractCegarLoop]: Abstraction has 276 states and 292 transitions. [2018-01-20 22:06:12,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-20 22:06:12,635 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 292 transitions. [2018-01-20 22:06:12,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-20 22:06:12,637 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:12,637 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 22:06:12,637 INFO L371 AbstractCegarLoop]: === Iteration 14 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:12,638 INFO L82 PathProgramCache]: Analyzing trace with hash -346763008, now seen corresponding path program 10 times [2018-01-20 22:06:12,638 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:12,638 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:12,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:12,639 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:12,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:12,666 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:12,863 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 22:06:12,863 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:12,863 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 22:06:12,873 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:06:13,555 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:13,559 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:13,606 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 22:06:13,630 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:13,630 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-01-20 22:06:13,630 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-20 22:06:13,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-20 22:06:13,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:06:13,631 INFO L87 Difference]: Start difference. First operand 276 states and 292 transitions. Second operand 14 states. [2018-01-20 22:06:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:13,710 INFO L93 Difference]: Finished difference Result 568 states and 605 transitions. [2018-01-20 22:06:13,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-20 22:06:13,710 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 113 [2018-01-20 22:06:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:13,712 INFO L225 Difference]: With dead ends: 568 [2018-01-20 22:06:13,712 INFO L226 Difference]: Without dead ends: 300 [2018-01-20 22:06:13,713 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:06:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-20 22:06:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2018-01-20 22:06:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-01-20 22:06:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 306 transitions. [2018-01-20 22:06:13,725 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 306 transitions. Word has length 113 [2018-01-20 22:06:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:13,726 INFO L432 AbstractCegarLoop]: Abstraction has 290 states and 306 transitions. [2018-01-20 22:06:13,726 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-20 22:06:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 306 transitions. [2018-01-20 22:06:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-20 22:06:13,728 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:13,728 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 22:06:13,728 INFO L371 AbstractCegarLoop]: === Iteration 15 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash 719727161, now seen corresponding path program 11 times [2018-01-20 22:06:13,728 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:13,728 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:13,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:13,729 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:13,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:13,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:13,904 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 22:06:13,904 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:13,905 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 22:06:13,918 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:06:13,933 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:13,946 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:13,960 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:13,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:13,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,005 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,021 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,044 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,101 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,354 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,518 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:14,791 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:14,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:14,833 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 22:06:14,854 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:14,855 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-01-20 22:06:14,855 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-20 22:06:14,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-20 22:06:14,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-20 22:06:14,856 INFO L87 Difference]: Start difference. First operand 290 states and 306 transitions. Second operand 15 states. [2018-01-20 22:06:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:14,936 INFO L93 Difference]: Finished difference Result 596 states and 633 transitions. [2018-01-20 22:06:14,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-20 22:06:14,936 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 120 [2018-01-20 22:06:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:14,938 INFO L225 Difference]: With dead ends: 596 [2018-01-20 22:06:14,938 INFO L226 Difference]: Without dead ends: 314 [2018-01-20 22:06:14,938 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-20 22:06:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-01-20 22:06:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 304. [2018-01-20 22:06:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-20 22:06:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 320 transitions. [2018-01-20 22:06:14,950 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 320 transitions. Word has length 120 [2018-01-20 22:06:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:14,950 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 320 transitions. [2018-01-20 22:06:14,950 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-20 22:06:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 320 transitions. [2018-01-20 22:06:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-01-20 22:06:14,952 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:14,952 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 22:06:14,952 INFO L371 AbstractCegarLoop]: === Iteration 16 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:14,953 INFO L82 PathProgramCache]: Analyzing trace with hash -537809184, now seen corresponding path program 12 times [2018-01-20 22:06:14,953 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:14,953 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:14,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:14,954 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:14,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:14,982 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:15,172 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 22:06:15,172 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:15,172 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 22:06:15,178 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:06:15,198 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:15,215 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:15,245 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:15,324 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:15,668 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:16,511 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:17,545 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:18,773 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:19,708 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:21,114 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:25,834 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:37,846 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:45,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:06:45,480 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:45,489 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:45,512 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 22:06:45,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:45,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-01-20 22:06:45,537 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-20 22:06:45,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-20 22:06:45,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-20 22:06:45,537 INFO L87 Difference]: Start difference. First operand 304 states and 320 transitions. Second operand 16 states. [2018-01-20 22:06:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:45,629 INFO L93 Difference]: Finished difference Result 624 states and 661 transitions. [2018-01-20 22:06:45,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-20 22:06:45,629 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2018-01-20 22:06:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:45,631 INFO L225 Difference]: With dead ends: 624 [2018-01-20 22:06:45,631 INFO L226 Difference]: Without dead ends: 328 [2018-01-20 22:06:45,632 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-20 22:06:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-20 22:06:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 318. [2018-01-20 22:06:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-01-20 22:06:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 334 transitions. [2018-01-20 22:06:45,643 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 334 transitions. Word has length 127 [2018-01-20 22:06:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:45,644 INFO L432 AbstractCegarLoop]: Abstraction has 318 states and 334 transitions. [2018-01-20 22:06:45,644 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-20 22:06:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 334 transitions. [2018-01-20 22:06:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-20 22:06:45,645 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:45,646 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 22:06:45,646 INFO L371 AbstractCegarLoop]: === Iteration 17 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1468919897, now seen corresponding path program 13 times [2018-01-20 22:06:45,646 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:45,646 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:45,647 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:45,647 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:45,647 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:45,675 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:46,015 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 22:06:46,015 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:46,015 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 22:06:46,023 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:46,084 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:46,121 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 22:06:46,155 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:46,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-01-20 22:06:46,155 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 22:06:46,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 22:06:46,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-20 22:06:46,156 INFO L87 Difference]: Start difference. First operand 318 states and 334 transitions. Second operand 17 states. [2018-01-20 22:06:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:46,237 INFO L93 Difference]: Finished difference Result 652 states and 689 transitions. [2018-01-20 22:06:46,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-20 22:06:46,238 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2018-01-20 22:06:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:46,240 INFO L225 Difference]: With dead ends: 652 [2018-01-20 22:06:46,240 INFO L226 Difference]: Without dead ends: 342 [2018-01-20 22:06:46,241 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-20 22:06:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-20 22:06:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2018-01-20 22:06:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-20 22:06:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 348 transitions. [2018-01-20 22:06:46,252 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 348 transitions. Word has length 134 [2018-01-20 22:06:46,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:46,252 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 348 transitions. [2018-01-20 22:06:46,252 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-20 22:06:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 348 transitions. [2018-01-20 22:06:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-01-20 22:06:46,254 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:46,254 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 22:06:46,254 INFO L371 AbstractCegarLoop]: === Iteration 18 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:46,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1639660352, now seen corresponding path program 14 times [2018-01-20 22:06:46,254 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:46,254 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:46,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:46,255 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:06:46,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:46,282 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:46,480 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 22:06:46,480 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:46,480 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 22:06:46,488 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:06:46,523 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:46,570 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:06:46,576 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:06:46,581 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:06:46,637 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 22:06:46,671 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:06:46,672 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-01-20 22:06:46,672 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-20 22:06:46,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-20 22:06:46,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-20 22:06:46,673 INFO L87 Difference]: Start difference. First operand 332 states and 348 transitions. Second operand 18 states. [2018-01-20 22:06:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:06:46,742 INFO L93 Difference]: Finished difference Result 680 states and 717 transitions. [2018-01-20 22:06:46,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-20 22:06:46,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2018-01-20 22:06:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:06:46,746 INFO L225 Difference]: With dead ends: 680 [2018-01-20 22:06:46,746 INFO L226 Difference]: Without dead ends: 356 [2018-01-20 22:06:46,747 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 22:06:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-01-20 22:06:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 346. [2018-01-20 22:06:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-01-20 22:06:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 362 transitions. [2018-01-20 22:06:46,758 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 362 transitions. Word has length 141 [2018-01-20 22:06:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:06:46,758 INFO L432 AbstractCegarLoop]: Abstraction has 346 states and 362 transitions. [2018-01-20 22:06:46,758 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-20 22:06:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 362 transitions. [2018-01-20 22:06:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-20 22:06:46,760 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:06:46,760 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 22:06:46,760 INFO L371 AbstractCegarLoop]: === Iteration 19 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:06:46,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1013940615, now seen corresponding path program 15 times [2018-01-20 22:06:46,761 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:06:46,761 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:06:46,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:46,762 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:06:46,762 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:06:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:06:46,790 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:06:47,095 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 22:06:47,096 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:06:47,096 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 22:06:47,108 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:06:47,141 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:47,179 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:47,331 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:47,404 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:47,499 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:47,786 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:48,245 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:49,494 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:54,045 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:56,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:06:59,157 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:07:05,484 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Received shutdown request... [2018-01-20 22:07:10,456 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown