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/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 21:21:45,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 21:21:45,962 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 21:21:45,974 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 21:21:45,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 21:21:45,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 21:21:45,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 21:21:45,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 21:21:45,978 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 21:21:45,979 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 21:21:45,979 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 21:21:45,980 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 21:21:45,980 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 21:21:45,981 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 21:21:45,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 21:21:45,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 21:21:45,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 21:21:45,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 21:21:45,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 21:21:45,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 21:21:45,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-28 21:21:45,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 21:21:45,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 21:21:45,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 21:21:46,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 21:21:46,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 21:21:46,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 21:21:46,011 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 21:21:46,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 21:21:46,011 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 21:21:46,011 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 21:21:46,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 21:21:46,012 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 21:21:46,012 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 21:21:46,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 21:21:46,013 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 21:21:46,013 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 21:21:46,013 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 21:21:46,013 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 21:21:46,014 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 21:21:46,014 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 21:21:46,014 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 21:21:46,014 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 21:21:46,014 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 21:21:46,015 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 21:21:46,015 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 21:21:46,015 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 21:21:46,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 21:21:46,015 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 21:21:46,016 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 21:21:46,016 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 21:21:46,016 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 21:21:46,016 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 21:21:46,016 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 21:21:46,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 21:21:46,017 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 21:21:46,018 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 21:21:46,018 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 21:21:46,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 21:21:46,065 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 21:21:46,069 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 21:21:46,070 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 21:21:46,071 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 21:21:46,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-deref.i [2018-01-28 21:21:46,248 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 21:21:46,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 21:21:46,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 21:21:46,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 21:21:46,260 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 21:21:46,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee26331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46, skipping insertion in model container [2018-01-28 21:21:46,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,277 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 21:21:46,316 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 21:21:46,422 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 21:21:46,442 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 21:21:46,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46 WrapperNode [2018-01-28 21:21:46,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 21:21:46,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 21:21:46,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 21:21:46,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 21:21:46,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (1/1) ... [2018-01-28 21:21:46,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 21:21:46,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 21:21:46,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 21:21:46,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 21:21:46,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (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 [2018-01-28 21:21:46,542 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 21:21:46,542 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 21:21:46,543 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-28 21:21:46,543 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 21:21:46,543 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 21:21:46,543 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 21:21:46,543 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 21:21:46,543 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 21:21:46,544 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 21:21:46,813 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 21:21:46,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:21:46 BoogieIcfgContainer [2018-01-28 21:21:46,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 21:21:46,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 21:21:46,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 21:21:46,817 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 21:21:46,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:21:46" (1/3) ... [2018-01-28 21:21:46,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c13791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:21:46, skipping insertion in model container [2018-01-28 21:21:46,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:21:46" (2/3) ... [2018-01-28 21:21:46,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c13791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:21:46, skipping insertion in model container [2018-01-28 21:21:46,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:21:46" (3/3) ... [2018-01-28 21:21:46,821 INFO L107 eAbstractionObserver]: Analyzing ICFG 960521-1_false-valid-deref.i [2018-01-28 21:21:46,827 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 21:21:46,833 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-01-28 21:21:46,878 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 21:21:46,878 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 21:21:46,879 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 21:21:46,879 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 21:21:46,879 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 21:21:46,879 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 21:21:46,879 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 21:21:46,879 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 21:21:46,880 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 21:21:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-28 21:21:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-28 21:21:46,903 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:46,904 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:21:46,905 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:46,909 INFO L82 PathProgramCache]: Analyzing trace with hash 608637057, now seen corresponding path program 1 times [2018-01-28 21:21:46,910 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:46,911 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:46,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:46,954 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:46,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:47,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:47,121 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:21:47,121 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 21:21:47,123 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 21:21:47,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 21:21:47,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 21:21:47,136 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 5 states. [2018-01-28 21:21:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:47,431 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2018-01-28 21:21:47,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 21:21:47,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-28 21:21:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:47,443 INFO L225 Difference]: With dead ends: 99 [2018-01-28 21:21:47,443 INFO L226 Difference]: Without dead ends: 60 [2018-01-28 21:21:47,447 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-28 21:21:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-28 21:21:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-28 21:21:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-28 21:21:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-01-28 21:21:47,482 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 17 [2018-01-28 21:21:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:47,483 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-01-28 21:21:47,483 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 21:21:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-01-28 21:21:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-28 21:21:47,484 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:47,484 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:21:47,484 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash 608637058, now seen corresponding path program 1 times [2018-01-28 21:21:47,484 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:47,484 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:47,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,486 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:47,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:47,509 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:47,605 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:21:47,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 21:21:47,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 21:21:47,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 21:21:47,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 21:21:47,608 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 6 states. [2018-01-28 21:21:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:47,807 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-01-28 21:21:47,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 21:21:47,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-01-28 21:21:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:47,808 INFO L225 Difference]: With dead ends: 60 [2018-01-28 21:21:47,808 INFO L226 Difference]: Without dead ends: 59 [2018-01-28 21:21:47,809 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-28 21:21:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-28 21:21:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-01-28 21:21:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-28 21:21:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-28 21:21:47,817 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 17 [2018-01-28 21:21:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:47,818 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-28 21:21:47,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 21:21:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-28 21:21:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-28 21:21:47,819 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:47,819 INFO L330 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] [2018-01-28 21:21:47,819 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash 186914476, now seen corresponding path program 1 times [2018-01-28 21:21:47,820 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:47,820 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:47,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,821 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:47,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:47,842 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:47,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:21:47,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 21:21:47,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 21:21:47,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 21:21:47,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 21:21:47,908 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2018-01-28 21:21:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:47,952 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-01-28 21:21:47,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 21:21:47,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-01-28 21:21:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:47,954 INFO L225 Difference]: With dead ends: 59 [2018-01-28 21:21:47,954 INFO L226 Difference]: Without dead ends: 56 [2018-01-28 21:21:47,955 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 21:21:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-28 21:21:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-28 21:21:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-28 21:21:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-01-28 21:21:47,962 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 24 [2018-01-28 21:21:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:47,962 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-01-28 21:21:47,962 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 21:21:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-01-28 21:21:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-28 21:21:47,963 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:47,964 INFO L330 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] [2018-01-28 21:21:47,964 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash 186914477, now seen corresponding path program 1 times [2018-01-28 21:21:47,964 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:47,964 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:47,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,966 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:47,966 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:47,985 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:48,170 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:21:48,170 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 21:21:48,170 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 21:21:48,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 21:21:48,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-01-28 21:21:48,171 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 7 states. [2018-01-28 21:21:48,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:48,282 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2018-01-28 21:21:48,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 21:21:48,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-01-28 21:21:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:48,283 INFO L225 Difference]: With dead ends: 94 [2018-01-28 21:21:48,283 INFO L226 Difference]: Without dead ends: 65 [2018-01-28 21:21:48,283 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-28 21:21:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-28 21:21:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2018-01-28 21:21:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-28 21:21:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-28 21:21:48,290 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 24 [2018-01-28 21:21:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:48,290 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-28 21:21:48,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 21:21:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-28 21:21:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-28 21:21:48,291 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:48,291 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:21:48,291 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:48,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1679529059, now seen corresponding path program 1 times [2018-01-28 21:21:48,291 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:48,291 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:48,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:48,292 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:48,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:48,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:48,493 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:48,493 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 [2018-01-28 21:21:48,502 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:48,548 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:48,595 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-28 21:21:48,596 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:48,618 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:21:48,619 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-01-28 21:21:48,639 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-01-28 21:21:48,640 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:48,647 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-01-28 21:21:48,647 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:21 [2018-01-28 21:21:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:48,814 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:48,814 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-01-28 21:21:48,815 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-28 21:21:48,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-28 21:21:48,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-28 21:21:48,816 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 13 states. [2018-01-28 21:21:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:49,077 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2018-01-28 21:21:49,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-28 21:21:49,078 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-01-28 21:21:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:49,079 INFO L225 Difference]: With dead ends: 100 [2018-01-28 21:21:49,080 INFO L226 Difference]: Without dead ends: 71 [2018-01-28 21:21:49,080 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-01-28 21:21:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-28 21:21:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2018-01-28 21:21:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-28 21:21:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-01-28 21:21:49,088 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 30 [2018-01-28 21:21:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:49,089 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-01-28 21:21:49,089 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-28 21:21:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-01-28 21:21:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-28 21:21:49,090 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:49,090 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-01-28 21:21:49,090 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash -294686311, now seen corresponding path program 2 times [2018-01-28 21:21:49,091 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:49,091 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:49,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:49,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:49,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:49,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:49,328 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:49,329 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 [2018-01-28 21:21:49,335 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:21:49,354 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:49,358 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:49,359 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:49,363 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:49,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-28 21:21:49,367 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:49,373 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 21:21:49,373 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:49,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:21:49,378 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:16 [2018-01-28 21:21:49,403 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 21:21:49,404 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 21:21:49,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-01-28 21:21:49,407 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:49,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-01-28 21:21:49,417 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:49,423 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 21:21:49,423 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:22 [2018-01-28 21:21:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:49,630 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:49,631 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-01-28 21:21:49,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-28 21:21:49,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-28 21:21:49,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-01-28 21:21:49,631 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 20 states. [2018-01-28 21:21:50,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:50,563 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-01-28 21:21:50,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-28 21:21:50,563 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2018-01-28 21:21:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:50,564 INFO L225 Difference]: With dead ends: 105 [2018-01-28 21:21:50,564 INFO L226 Difference]: Without dead ends: 76 [2018-01-28 21:21:50,565 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2018-01-28 21:21:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-28 21:21:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2018-01-28 21:21:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-28 21:21:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-01-28 21:21:50,573 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 36 [2018-01-28 21:21:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:50,574 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-01-28 21:21:50,574 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-28 21:21:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-01-28 21:21:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-28 21:21:50,576 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:50,576 INFO L330 BasicCegarLoop]: trace histogram [4, 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] [2018-01-28 21:21:50,576 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1273956393, now seen corresponding path program 1 times [2018-01-28 21:21:50,576 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:50,577 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:50,578 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:50,578 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:21:50,578 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:50,595 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:50,734 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:50,734 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 [2018-01-28 21:21:50,741 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:50,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:50,889 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:50,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-01-28 21:21:50,889 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 21:21:50,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 21:21:50,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-01-28 21:21:50,890 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 17 states. [2018-01-28 21:21:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:51,018 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2018-01-28 21:21:51,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-28 21:21:51,019 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-01-28 21:21:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:51,020 INFO L225 Difference]: With dead ends: 110 [2018-01-28 21:21:51,020 INFO L226 Difference]: Without dead ends: 82 [2018-01-28 21:21:51,021 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2018-01-28 21:21:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-28 21:21:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2018-01-28 21:21:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-28 21:21:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-01-28 21:21:51,029 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 45 [2018-01-28 21:21:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:51,030 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-01-28 21:21:51,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 21:21:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-01-28 21:21:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-01-28 21:21:51,031 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:51,031 INFO L330 BasicCegarLoop]: trace histogram [5, 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] [2018-01-28 21:21:51,031 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:51,031 INFO L82 PathProgramCache]: Analyzing trace with hash -225814477, now seen corresponding path program 2 times [2018-01-28 21:21:51,032 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:51,032 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:51,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:51,032 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:51,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:51,046 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:51,172 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:51,172 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 [2018-01-28 21:21:51,177 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:21:51,191 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:51,196 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:51,199 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:51,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-28 21:21:51,209 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:51,217 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 21:21:51,217 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-01-28 21:21:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-28 21:21:51,423 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-28 21:21:51,424 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2018-01-28 21:21:51,424 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-28 21:21:51,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-28 21:21:51,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2018-01-28 21:21:51,424 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 19 states. [2018-01-28 21:21:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:52,005 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2018-01-28 21:21:52,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-28 21:21:52,005 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2018-01-28 21:21:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:52,006 INFO L225 Difference]: With dead ends: 101 [2018-01-28 21:21:52,006 INFO L226 Difference]: Without dead ends: 73 [2018-01-28 21:21:52,008 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=310, Invalid=1250, Unknown=0, NotChecked=0, Total=1560 [2018-01-28 21:21:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-28 21:21:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2018-01-28 21:21:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-28 21:21:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2018-01-28 21:21:52,017 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 51 [2018-01-28 21:21:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:52,017 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2018-01-28 21:21:52,017 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-28 21:21:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2018-01-28 21:21:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-01-28 21:21:52,018 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:52,018 INFO L330 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 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] [2018-01-28 21:21:52,019 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:52,019 INFO L82 PathProgramCache]: Analyzing trace with hash -921316877, now seen corresponding path program 1 times [2018-01-28 21:21:52,019 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:52,019 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:52,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:52,020 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:21:52,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:52,034 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-28 21:21:52,213 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:52,213 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 [2018-01-28 21:21:52,221 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:52,258 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-28 21:21:52,422 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:52,422 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-01-28 21:21:52,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-28 21:21:52,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-28 21:21:52,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2018-01-28 21:21:52,423 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2018-01-28 21:21:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:52,584 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2018-01-28 21:21:52,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-28 21:21:52,584 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2018-01-28 21:21:52,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:52,585 INFO L225 Difference]: With dead ends: 94 [2018-01-28 21:21:52,585 INFO L226 Difference]: Without dead ends: 79 [2018-01-28 21:21:52,586 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=830, Unknown=0, NotChecked=0, Total=1190 [2018-01-28 21:21:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-01-28 21:21:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2018-01-28 21:21:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-28 21:21:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2018-01-28 21:21:52,595 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 63 [2018-01-28 21:21:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:52,596 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2018-01-28 21:21:52,596 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-28 21:21:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2018-01-28 21:21:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-01-28 21:21:52,597 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:52,598 INFO L330 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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] [2018-01-28 21:21:52,598 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:52,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1713697661, now seen corresponding path program 2 times [2018-01-28 21:21:52,598 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:52,598 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:52,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:52,599 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:21:52,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:52,612 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-28 21:21:52,791 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:52,791 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 [2018-01-28 21:21:52,798 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:21:52,813 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:52,822 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:52,823 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:52,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-28 21:21:53,162 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:53,162 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2018-01-28 21:21:53,163 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-28 21:21:53,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-28 21:21:53,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2018-01-28 21:21:53,164 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 29 states. [2018-01-28 21:21:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:53,465 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2018-01-28 21:21:53,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-28 21:21:53,465 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2018-01-28 21:21:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:53,466 INFO L225 Difference]: With dead ends: 100 [2018-01-28 21:21:53,466 INFO L226 Difference]: Without dead ends: 85 [2018-01-28 21:21:53,467 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2018-01-28 21:21:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-28 21:21:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2018-01-28 21:21:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-28 21:21:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-01-28 21:21:53,476 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 69 [2018-01-28 21:21:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:53,476 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-01-28 21:21:53,476 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-28 21:21:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-01-28 21:21:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-01-28 21:21:53,477 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:53,477 INFO L330 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 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] [2018-01-28 21:21:53,477 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash -307018361, now seen corresponding path program 3 times [2018-01-28 21:21:53,477 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:53,477 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:53,478 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:53,478 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:21:53,478 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:53,493 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-28 21:21:53,647 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:53,647 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 [2018-01-28 21:21:53,653 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 21:21:53,667 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:21:53,671 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:21:53,672 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:53,675 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:53,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-28 21:21:53,680 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:53,683 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 21:21:53,683 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-01-28 21:21:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-01-28 21:21:53,884 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:53,884 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 25 [2018-01-28 21:21:53,884 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-28 21:21:53,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-28 21:21:53,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2018-01-28 21:21:53,885 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 25 states. [2018-01-28 21:21:54,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:54,727 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2018-01-28 21:21:54,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-28 21:21:54,727 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 75 [2018-01-28 21:21:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:54,728 INFO L225 Difference]: With dead ends: 112 [2018-01-28 21:21:54,728 INFO L226 Difference]: Without dead ends: 97 [2018-01-28 21:21:54,729 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=2340, Unknown=0, NotChecked=0, Total=2970 [2018-01-28 21:21:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-28 21:21:54,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2018-01-28 21:21:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-01-28 21:21:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2018-01-28 21:21:54,735 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 75 [2018-01-28 21:21:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:54,735 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2018-01-28 21:21:54,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-28 21:21:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2018-01-28 21:21:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-01-28 21:21:54,737 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:54,737 INFO L330 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 3, 3, 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] [2018-01-28 21:21:54,737 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1495560775, now seen corresponding path program 4 times [2018-01-28 21:21:54,737 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:54,737 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:54,738 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:54,738 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:21:54,738 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:54,752 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-28 21:21:54,966 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:54,966 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 [2018-01-28 21:21:54,972 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 21:21:54,997 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:55,001 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:55,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-28 21:21:55,007 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:55,010 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:21:55,010 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-01-28 21:21:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 140 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:21:55,654 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:55,654 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 46 [2018-01-28 21:21:55,655 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-28 21:21:55,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-28 21:21:55,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1846, Unknown=0, NotChecked=0, Total=2070 [2018-01-28 21:21:55,655 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 46 states. [2018-01-28 21:21:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:57,473 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2018-01-28 21:21:57,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-28 21:21:57,473 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 87 [2018-01-28 21:21:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:57,474 INFO L225 Difference]: With dead ends: 130 [2018-01-28 21:21:57,474 INFO L226 Difference]: Without dead ends: 109 [2018-01-28 21:21:57,475 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1008, Invalid=6302, Unknown=0, NotChecked=0, Total=7310 [2018-01-28 21:21:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-01-28 21:21:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2018-01-28 21:21:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-01-28 21:21:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-01-28 21:21:57,481 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 87 [2018-01-28 21:21:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:57,481 INFO L432 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-01-28 21:21:57,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-28 21:21:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-01-28 21:21:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-28 21:21:57,483 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:57,483 INFO L330 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 4, 4, 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] [2018-01-28 21:21:57,483 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash -552939513, now seen corresponding path program 5 times [2018-01-28 21:21:57,483 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:57,483 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:57,484 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:57,484 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:21:57,484 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:57,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-28 21:21:57,705 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:57,705 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 [2018-01-28 21:21:57,710 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 21:21:57,718 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,720 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,721 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,728 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,739 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,746 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:21:57,782 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:57,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-28 21:21:58,165 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:21:58,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2018-01-28 21:21:58,166 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-28 21:21:58,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-28 21:21:58,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1261, Unknown=0, NotChecked=0, Total=1640 [2018-01-28 21:21:58,167 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 41 states. [2018-01-28 21:21:58,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:21:58,460 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-01-28 21:21:58,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-28 21:21:58,461 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 99 [2018-01-28 21:21:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:21:58,462 INFO L225 Difference]: With dead ends: 140 [2018-01-28 21:21:58,462 INFO L226 Difference]: Without dead ends: 113 [2018-01-28 21:21:58,463 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=964, Invalid=2458, Unknown=0, NotChecked=0, Total=3422 [2018-01-28 21:21:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-01-28 21:21:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2018-01-28 21:21:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-28 21:21:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2018-01-28 21:21:58,469 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 99 [2018-01-28 21:21:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:21:58,470 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2018-01-28 21:21:58,470 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-28 21:21:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2018-01-28 21:21:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-01-28 21:21:58,471 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:21:58,471 INFO L330 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 4, 4, 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] [2018-01-28 21:21:58,471 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:21:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1688898415, now seen corresponding path program 6 times [2018-01-28 21:21:58,472 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:21:58,472 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:21:58,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:58,472 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:21:58,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:21:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:21:58,485 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:21:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-28 21:21:58,840 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:21:58,854 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 [2018-01-28 21:21:58,859 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 21:21:58,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:21:58,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:21:58,887 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:21:58,888 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:21:58,891 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:21:58,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-28 21:21:58,896 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:21:58,920 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 21:21:58,920 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-01-28 21:21:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-01-28 21:21:59,310 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-28 21:21:59,310 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [24] total 32 [2018-01-28 21:21:59,311 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-28 21:21:59,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-28 21:21:59,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2018-01-28 21:21:59,311 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 32 states. [2018-01-28 21:22:00,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:00,745 INFO L93 Difference]: Finished difference Result 145 states and 148 transitions. [2018-01-28 21:22:00,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-28 21:22:00,745 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 105 [2018-01-28 21:22:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:00,746 INFO L225 Difference]: With dead ends: 145 [2018-01-28 21:22:00,746 INFO L226 Difference]: Without dead ends: 118 [2018-01-28 21:22:00,747 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1127, Invalid=4423, Unknown=0, NotChecked=0, Total=5550 [2018-01-28 21:22:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-28 21:22:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-01-28 21:22:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-28 21:22:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2018-01-28 21:22:00,756 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 105 [2018-01-28 21:22:00,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:00,756 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2018-01-28 21:22:00,756 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-28 21:22:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2018-01-28 21:22:00,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-28 21:22:00,758 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:00,758 INFO L330 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 4, 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] [2018-01-28 21:22:00,758 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:00,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1307291704, now seen corresponding path program 1 times [2018-01-28 21:22:00,758 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:00,759 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:00,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:00,759 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:00,760 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:00,775 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-28 21:22:00,896 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:00,896 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 [2018-01-28 21:22:00,903 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:22:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:00,942 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-28 21:22:01,492 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:01,492 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26] total 33 [2018-01-28 21:22:01,492 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-28 21:22:01,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-28 21:22:01,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2018-01-28 21:22:01,493 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 33 states. [2018-01-28 21:22:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:01,933 INFO L93 Difference]: Finished difference Result 157 states and 160 transitions. [2018-01-28 21:22:01,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-28 21:22:01,934 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 113 [2018-01-28 21:22:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:01,935 INFO L225 Difference]: With dead ends: 157 [2018-01-28 21:22:01,935 INFO L226 Difference]: Without dead ends: 132 [2018-01-28 21:22:01,936 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=957, Invalid=2825, Unknown=0, NotChecked=0, Total=3782 [2018-01-28 21:22:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-28 21:22:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2018-01-28 21:22:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-28 21:22:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2018-01-28 21:22:01,943 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 113 [2018-01-28 21:22:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:01,943 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2018-01-28 21:22:01,943 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-28 21:22:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2018-01-28 21:22:01,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-01-28 21:22:01,945 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:01,945 INFO L330 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 5, 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] [2018-01-28 21:22:01,945 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash -721506168, now seen corresponding path program 2 times [2018-01-28 21:22:01,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:01,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:01,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:01,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:22:01,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:01,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-28 21:22:02,073 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:02,073 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 [2018-01-28 21:22:02,079 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:22:02,096 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:02,110 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:02,114 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:02,117 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-28 21:22:02,464 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:02,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28] total 37 [2018-01-28 21:22:02,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-28 21:22:02,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-28 21:22:02,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2018-01-28 21:22:02,465 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 37 states. [2018-01-28 21:22:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:02,990 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2018-01-28 21:22:02,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-28 21:22:02,990 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 125 [2018-01-28 21:22:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:02,991 INFO L225 Difference]: With dead ends: 175 [2018-01-28 21:22:02,991 INFO L226 Difference]: Without dead ends: 144 [2018-01-28 21:22:02,992 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1174, Invalid=3656, Unknown=0, NotChecked=0, Total=4830 [2018-01-28 21:22:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-28 21:22:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2018-01-28 21:22:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-28 21:22:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-01-28 21:22:03,000 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 125 [2018-01-28 21:22:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:03,000 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-01-28 21:22:03,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-28 21:22:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-01-28 21:22:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-01-28 21:22:03,001 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:03,001 INFO L330 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 6, 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] [2018-01-28 21:22:03,001 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:03,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1196327496, now seen corresponding path program 3 times [2018-01-28 21:22:03,001 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:03,001 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:03,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:03,002 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:03,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:03,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-28 21:22:03,119 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:03,119 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 [2018-01-28 21:22:03,130 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 21:22:03,145 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:03,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:03,152 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:03,158 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:03,162 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:03,167 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:03,168 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:03,171 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 74 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-28 21:22:03,409 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:03,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 32 [2018-01-28 21:22:03,410 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-28 21:22:03,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-28 21:22:03,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2018-01-28 21:22:03,410 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 32 states. [2018-01-28 21:22:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:03,779 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2018-01-28 21:22:03,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-28 21:22:03,779 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 137 [2018-01-28 21:22:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:03,780 INFO L225 Difference]: With dead ends: 151 [2018-01-28 21:22:03,780 INFO L226 Difference]: Without dead ends: 147 [2018-01-28 21:22:03,781 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=481, Invalid=1969, Unknown=0, NotChecked=0, Total=2450 [2018-01-28 21:22:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-28 21:22:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2018-01-28 21:22:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-28 21:22:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2018-01-28 21:22:03,791 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 137 [2018-01-28 21:22:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:03,792 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2018-01-28 21:22:03,792 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-28 21:22:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2018-01-28 21:22:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-28 21:22:03,793 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:03,793 INFO L330 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 7, 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] [2018-01-28 21:22:03,793 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:03,793 INFO L82 PathProgramCache]: Analyzing trace with hash 107218814, now seen corresponding path program 4 times [2018-01-28 21:22:03,793 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:03,794 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:03,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:03,794 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:03,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:03,812 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-28 21:22:03,953 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:03,953 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-28 21:22:03,958 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 21:22:04,311 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:04,315 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-28 21:22:04,696 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:04,696 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 30] total 43 [2018-01-28 21:22:04,696 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-28 21:22:04,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-28 21:22:04,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1464, Unknown=0, NotChecked=0, Total=1806 [2018-01-28 21:22:04,697 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 43 states. [2018-01-28 21:22:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:05,383 INFO L93 Difference]: Finished difference Result 205 states and 208 transitions. [2018-01-28 21:22:05,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-28 21:22:05,383 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 143 [2018-01-28 21:22:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:05,384 INFO L225 Difference]: With dead ends: 205 [2018-01-28 21:22:05,384 INFO L226 Difference]: Without dead ends: 162 [2018-01-28 21:22:05,385 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1521, Invalid=5121, Unknown=0, NotChecked=0, Total=6642 [2018-01-28 21:22:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-28 21:22:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2018-01-28 21:22:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-28 21:22:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2018-01-28 21:22:05,396 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 143 [2018-01-28 21:22:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:05,397 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2018-01-28 21:22:05,397 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-28 21:22:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2018-01-28 21:22:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-01-28 21:22:05,398 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:05,398 INFO L330 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 8, 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] [2018-01-28 21:22:05,398 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:05,399 INFO L82 PathProgramCache]: Analyzing trace with hash 82442814, now seen corresponding path program 5 times [2018-01-28 21:22:05,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:05,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:05,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:05,400 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:05,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:05,418 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-28 21:22:05,624 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:05,624 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 [2018-01-28 21:22:05,629 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 21:22:05,639 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,643 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,645 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,669 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,696 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,932 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,981 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:05,984 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:05,989 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-28 21:22:06,039 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:06,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-28 21:22:06,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-28 21:22:06,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-28 21:22:06,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-28 21:22:06,040 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 19 states. [2018-01-28 21:22:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:06,296 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-01-28 21:22:06,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-28 21:22:06,296 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 155 [2018-01-28 21:22:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:06,298 INFO L225 Difference]: With dead ends: 169 [2018-01-28 21:22:06,298 INFO L226 Difference]: Without dead ends: 165 [2018-01-28 21:22:06,298 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-28 21:22:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-28 21:22:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2018-01-28 21:22:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-01-28 21:22:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2018-01-28 21:22:06,311 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 155 [2018-01-28 21:22:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:06,312 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2018-01-28 21:22:06,312 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-28 21:22:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2018-01-28 21:22:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-01-28 21:22:06,313 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:06,313 INFO L330 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 9, 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] [2018-01-28 21:22:06,313 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1098436876, now seen corresponding path program 6 times [2018-01-28 21:22:06,314 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:06,314 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:06,314 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:06,315 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:06,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:06,332 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-28 21:22:06,562 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:06,562 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:06,572 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 21:22:06,593 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,598 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,601 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,624 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,637 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,655 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,677 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,686 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,715 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,819 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:06,983 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:07,089 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:07,090 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:07,097 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-28 21:22:07,837 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:07,837 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 36] total 53 [2018-01-28 21:22:07,838 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-28 21:22:07,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-28 21:22:07,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=2316, Unknown=0, NotChecked=0, Total=2756 [2018-01-28 21:22:07,838 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 53 states. [2018-01-28 21:22:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:08,914 INFO L93 Difference]: Finished difference Result 235 states and 238 transitions. [2018-01-28 21:22:08,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-28 21:22:08,914 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 161 [2018-01-28 21:22:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:08,915 INFO L225 Difference]: With dead ends: 235 [2018-01-28 21:22:08,915 INFO L226 Difference]: Without dead ends: 180 [2018-01-28 21:22:08,916 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1971, Invalid=8331, Unknown=0, NotChecked=0, Total=10302 [2018-01-28 21:22:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-28 21:22:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2018-01-28 21:22:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-28 21:22:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2018-01-28 21:22:08,929 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 161 [2018-01-28 21:22:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:08,930 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2018-01-28 21:22:08,930 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-28 21:22:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2018-01-28 21:22:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-01-28 21:22:08,930 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:08,930 INFO L330 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 10, 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] [2018-01-28 21:22:08,930 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -78937420, now seen corresponding path program 7 times [2018-01-28 21:22:08,931 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:08,931 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:08,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:08,931 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:08,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:08,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-28 21:22:09,168 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:09,199 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:09,206 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:22:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:09,263 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-28 21:22:09,826 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:09,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 34] total 53 [2018-01-28 21:22:09,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-28 21:22:09,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-28 21:22:09,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=2262, Unknown=0, NotChecked=0, Total=2756 [2018-01-28 21:22:09,827 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 53 states. [2018-01-28 21:22:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:10,772 INFO L93 Difference]: Finished difference Result 253 states and 256 transitions. [2018-01-28 21:22:10,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-28 21:22:10,772 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 173 [2018-01-28 21:22:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:10,773 INFO L225 Difference]: With dead ends: 253 [2018-01-28 21:22:10,773 INFO L226 Difference]: Without dead ends: 192 [2018-01-28 21:22:10,774 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2530 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2248, Invalid=8054, Unknown=0, NotChecked=0, Total=10302 [2018-01-28 21:22:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-28 21:22:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 186. [2018-01-28 21:22:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-28 21:22:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2018-01-28 21:22:10,787 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 173 [2018-01-28 21:22:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:10,787 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2018-01-28 21:22:10,787 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-28 21:22:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2018-01-28 21:22:10,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-28 21:22:10,789 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:10,789 INFO L330 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 11, 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] [2018-01-28 21:22:10,789 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1366489228, now seen corresponding path program 8 times [2018-01-28 21:22:10,789 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:10,789 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:10,790 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:10,790 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:22:10,790 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:10,805 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-01-28 21:22:11,117 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:11,117 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:11,124 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:22:11,141 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:11,169 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:11,173 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:11,178 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-28 21:22:11,866 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:11,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36] total 57 [2018-01-28 21:22:11,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-28 21:22:11,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-28 21:22:11,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=2627, Unknown=0, NotChecked=0, Total=3192 [2018-01-28 21:22:11,867 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 57 states. [2018-01-28 21:22:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:13,059 INFO L93 Difference]: Finished difference Result 271 states and 274 transitions. [2018-01-28 21:22:13,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-28 21:22:13,059 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 185 [2018-01-28 21:22:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:13,060 INFO L225 Difference]: With dead ends: 271 [2018-01-28 21:22:13,060 INFO L226 Difference]: Without dead ends: 204 [2018-01-28 21:22:13,061 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2591, Invalid=9399, Unknown=0, NotChecked=0, Total=11990 [2018-01-28 21:22:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-28 21:22:13,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2018-01-28 21:22:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-28 21:22:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-01-28 21:22:13,073 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 185 [2018-01-28 21:22:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:13,073 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-01-28 21:22:13,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-28 21:22:13,073 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-01-28 21:22:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-01-28 21:22:13,074 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:13,074 INFO L330 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 12, 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] [2018-01-28 21:22:13,074 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:13,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1248427316, now seen corresponding path program 9 times [2018-01-28 21:22:13,074 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:13,074 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:13,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:13,075 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:13,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:13,095 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-28 21:22:13,685 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:13,685 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:13,690 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 21:22:13,710 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,714 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,717 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,726 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,734 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,749 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,759 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,834 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,883 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,907 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,924 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,953 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:22:13,954 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:13,959 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-28 21:22:14,075 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:14,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-28 21:22:14,076 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-28 21:22:14,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-28 21:22:14,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-28 21:22:14,077 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 27 states. [2018-01-28 21:22:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:14,590 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2018-01-28 21:22:14,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-28 21:22:14,632 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 197 [2018-01-28 21:22:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:14,634 INFO L225 Difference]: With dead ends: 211 [2018-01-28 21:22:14,634 INFO L226 Difference]: Without dead ends: 207 [2018-01-28 21:22:14,634 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-28 21:22:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-28 21:22:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2018-01-28 21:22:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-01-28 21:22:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2018-01-28 21:22:14,650 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 197 [2018-01-28 21:22:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:14,651 INFO L432 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2018-01-28 21:22:14,651 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-28 21:22:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2018-01-28 21:22:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-01-28 21:22:14,652 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:14,652 INFO L330 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 13, 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] [2018-01-28 21:22:14,652 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:14,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1746542954, now seen corresponding path program 10 times [2018-01-28 21:22:14,653 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:14,653 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:14,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:14,653 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:14,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:14,671 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-28 21:22:15,090 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:15,090 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:15,096 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 21:22:16,549 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:16,556 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-28 21:22:18,007 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:18,008 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 38] total 63 [2018-01-28 21:22:18,008 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-28 21:22:18,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-28 21:22:18,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=3225, Unknown=0, NotChecked=0, Total=3906 [2018-01-28 21:22:18,009 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 63 states. [2018-01-28 21:22:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:19,224 INFO L93 Difference]: Finished difference Result 301 states and 304 transitions. [2018-01-28 21:22:19,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-28 21:22:19,224 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 203 [2018-01-28 21:22:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:19,225 INFO L225 Difference]: With dead ends: 301 [2018-01-28 21:22:19,225 INFO L226 Difference]: Without dead ends: 222 [2018-01-28 21:22:19,227 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3716 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3138, Invalid=11624, Unknown=0, NotChecked=0, Total=14762 [2018-01-28 21:22:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-28 21:22:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2018-01-28 21:22:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-28 21:22:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2018-01-28 21:22:19,244 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 203 [2018-01-28 21:22:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:19,244 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2018-01-28 21:22:19,244 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-28 21:22:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2018-01-28 21:22:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-01-28 21:22:19,246 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:19,246 INFO L330 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 14, 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] [2018-01-28 21:22:19,246 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:19,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1923663830, now seen corresponding path program 11 times [2018-01-28 21:22:19,246 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:19,246 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:19,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:19,247 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:19,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:19,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-28 21:22:19,741 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:19,777 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:19,783 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 21:22:19,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,803 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,806 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,848 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:19,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:20,088 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:20,159 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:20,223 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:20,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:22,603 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:25,952 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:29,433 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:31,937 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:43,965 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:22:43,976 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:43,995 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-28 21:22:44,086 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:44,086 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-28 21:22:44,086 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-28 21:22:44,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-28 21:22:44,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-28 21:22:44,087 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 31 states. [2018-01-28 21:22:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:22:44,477 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-01-28 21:22:44,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-28 21:22:44,477 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 215 [2018-01-28 21:22:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:22:44,479 INFO L225 Difference]: With dead ends: 229 [2018-01-28 21:22:44,479 INFO L226 Difference]: Without dead ends: 225 [2018-01-28 21:22:44,480 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-28 21:22:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-01-28 21:22:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2018-01-28 21:22:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-28 21:22:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2018-01-28 21:22:44,497 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 215 [2018-01-28 21:22:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:22:44,498 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2018-01-28 21:22:44,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-28 21:22:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2018-01-28 21:22:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-28 21:22:44,500 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:22:44,500 INFO L330 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 15, 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] [2018-01-28 21:22:44,500 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:22:44,501 INFO L82 PathProgramCache]: Analyzing trace with hash 563170272, now seen corresponding path program 12 times [2018-01-28 21:22:44,501 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:22:44,501 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:22:44,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:44,502 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:22:44,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:22:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:22:44,524 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:22:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-28 21:22:45,240 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:22:45,240 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:22:45,251 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 21:22:45,275 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,297 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,304 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,310 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,331 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,352 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,401 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,471 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,660 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:45,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:46,006 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:46,488 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:47,216 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:48,756 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:49,835 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:58,025 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 21:22:58,035 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:22:58,048 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:22:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-28 21:22:58,764 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:22:58,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 40] total 69 [2018-01-28 21:22:58,764 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-28 21:22:58,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-28 21:22:58,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=3881, Unknown=0, NotChecked=0, Total=4692 [2018-01-28 21:22:58,765 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 69 states. [2018-01-28 21:23:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:23:00,240 INFO L93 Difference]: Finished difference Result 331 states and 334 transitions. [2018-01-28 21:23:00,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-01-28 21:23:00,240 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 221 [2018-01-28 21:23:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:23:00,242 INFO L225 Difference]: With dead ends: 331 [2018-01-28 21:23:00,242 INFO L226 Difference]: Without dead ends: 240 [2018-01-28 21:23:00,243 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4532 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3747, Invalid=14075, Unknown=0, NotChecked=0, Total=17822 [2018-01-28 21:23:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-28 21:23:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2018-01-28 21:23:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-28 21:23:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2018-01-28 21:23:00,260 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 221 [2018-01-28 21:23:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:23:00,260 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2018-01-28 21:23:00,260 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-28 21:23:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2018-01-28 21:23:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-01-28 21:23:00,262 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:23:00,262 INFO L330 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 16, 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] [2018-01-28 21:23:00,262 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:23:00,262 INFO L82 PathProgramCache]: Analyzing trace with hash 123159456, now seen corresponding path program 13 times [2018-01-28 21:23:00,263 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:23:00,263 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:23:00,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:00,264 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:23:00,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:23:00,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:23:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2018-01-28 21:23:00,801 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:23:00,801 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:23:00,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:23:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:23:00,854 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:23:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-28 21:23:01,617 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:23:01,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 42] total 73 [2018-01-28 21:23:01,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-28 21:23:01,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-28 21:23:01,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=4353, Unknown=0, NotChecked=0, Total=5256 [2018-01-28 21:23:01,618 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 73 states. [2018-01-28 21:23:03,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:23:03,200 INFO L93 Difference]: Finished difference Result 349 states and 352 transitions. [2018-01-28 21:23:03,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-28 21:23:03,200 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 233 [2018-01-28 21:23:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:23:03,201 INFO L225 Difference]: With dead ends: 349 [2018-01-28 21:23:03,201 INFO L226 Difference]: Without dead ends: 252 [2018-01-28 21:23:03,202 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5115 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4191, Invalid=15831, Unknown=0, NotChecked=0, Total=20022 [2018-01-28 21:23:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-01-28 21:23:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2018-01-28 21:23:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-01-28 21:23:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2018-01-28 21:23:03,213 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 233 [2018-01-28 21:23:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:23:03,213 INFO L432 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2018-01-28 21:23:03,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-28 21:23:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2018-01-28 21:23:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-01-28 21:23:03,214 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:23:03,214 INFO L330 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:23:03,214 INFO L371 AbstractCegarLoop]: === Iteration 28 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:23:03,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2146430048, now seen corresponding path program 14 times [2018-01-28 21:23:03,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:23:03,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:23:03,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:03,215 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:23:03,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:23:03,235 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:23:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-28 21:23:03,755 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:23:03,755 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:23:03,761 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:23:03,788 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:03,830 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:03,839 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:23:03,846 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:23:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-01-28 21:23:04,807 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:23:04,807 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 44] total 77 [2018-01-28 21:23:04,807 INFO L409 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-01-28 21:23:04,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-01-28 21:23:04,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=4852, Unknown=0, NotChecked=0, Total=5852 [2018-01-28 21:23:04,808 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand 77 states. [2018-01-28 21:23:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:23:06,584 INFO L93 Difference]: Finished difference Result 367 states and 370 transitions. [2018-01-28 21:23:06,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-01-28 21:23:06,584 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 245 [2018-01-28 21:23:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:23:06,585 INFO L225 Difference]: With dead ends: 367 [2018-01-28 21:23:06,586 INFO L226 Difference]: Without dead ends: 264 [2018-01-28 21:23:06,586 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5733 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4660, Invalid=17690, Unknown=0, NotChecked=0, Total=22350 [2018-01-28 21:23:06,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-28 21:23:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2018-01-28 21:23:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-01-28 21:23:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2018-01-28 21:23:06,604 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 245 [2018-01-28 21:23:06,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:23:06,604 INFO L432 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2018-01-28 21:23:06,604 INFO L433 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-01-28 21:23:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2018-01-28 21:23:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-01-28 21:23:06,606 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:23:06,606 INFO L330 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:23:06,606 INFO L371 AbstractCegarLoop]: === Iteration 29 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:23:06,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1701247456, now seen corresponding path program 15 times [2018-01-28 21:23:06,607 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:23:06,607 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:23:06,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:06,608 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:23:06,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:23:06,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:23:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-28 21:23:07,148 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:23:07,148 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:23:07,153 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 21:23:07,171 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,175 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,183 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,187 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,198 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,208 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,228 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,251 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,277 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,333 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,571 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,620 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:07,737 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:08,079 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:08,340 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:08,679 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:09,591 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 21:23:09,593 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:23:09,600 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:23:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 122 proven. 850 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-28 21:23:10,474 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:23:10,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 45] total 80 [2018-01-28 21:23:10,475 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-28 21:23:10,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-28 21:23:10,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=5184, Unknown=0, NotChecked=0, Total=6320 [2018-01-28 21:23:10,476 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand 80 states. [2018-01-28 21:23:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:23:11,484 INFO L93 Difference]: Finished difference Result 271 states and 272 transitions. [2018-01-28 21:23:11,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-01-28 21:23:11,484 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 257 [2018-01-28 21:23:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:23:11,485 INFO L225 Difference]: With dead ends: 271 [2018-01-28 21:23:11,486 INFO L226 Difference]: Without dead ends: 267 [2018-01-28 21:23:11,486 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4551 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3253, Invalid=11509, Unknown=0, NotChecked=0, Total=14762 [2018-01-28 21:23:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-28 21:23:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 264. [2018-01-28 21:23:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-01-28 21:23:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2018-01-28 21:23:11,498 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 257 [2018-01-28 21:23:11,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:23:11,498 INFO L432 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2018-01-28 21:23:11,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-28 21:23:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2018-01-28 21:23:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-01-28 21:23:11,499 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:23:11,499 INFO L330 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:23:11,500 INFO L371 AbstractCegarLoop]: === Iteration 30 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:23:11,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1396553386, now seen corresponding path program 16 times [2018-01-28 21:23:11,500 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:23:11,500 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:23:11,500 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:11,501 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:23:11,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:23:11,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:23:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-28 21:23:12,023 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:23:12,023 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:23:12,028 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 21:23:14,832 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:23:14,838 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:23:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-28 21:23:15,781 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:23:15,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 46] total 83 [2018-01-28 21:23:15,782 INFO L409 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-01-28 21:23:15,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-01-28 21:23:15,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1160, Invalid=5646, Unknown=0, NotChecked=0, Total=6806 [2018-01-28 21:23:15,782 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand 83 states. [2018-01-28 21:23:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:23:17,802 INFO L93 Difference]: Finished difference Result 397 states and 400 transitions. [2018-01-28 21:23:17,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-01-28 21:23:17,802 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 263 [2018-01-28 21:23:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:23:17,803 INFO L225 Difference]: With dead ends: 397 [2018-01-28 21:23:17,803 INFO L226 Difference]: Without dead ends: 282 [2018-01-28 21:23:17,805 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6727 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5407, Invalid=20675, Unknown=0, NotChecked=0, Total=26082 [2018-01-28 21:23:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-28 21:23:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 276. [2018-01-28 21:23:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-01-28 21:23:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2018-01-28 21:23:17,817 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 263 [2018-01-28 21:23:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:23:17,818 INFO L432 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2018-01-28 21:23:17,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-01-28 21:23:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2018-01-28 21:23:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-01-28 21:23:17,819 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:23:17,819 INFO L330 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:23:17,819 INFO L371 AbstractCegarLoop]: === Iteration 31 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-28 21:23:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1103723498, now seen corresponding path program 17 times [2018-01-28 21:23:17,819 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:23:17,819 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:23:17,820 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:17,820 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 21:23:17,820 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:23:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:23:17,836 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:23:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-28 21:23:18,408 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:23:18,408 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 21:23:18,413 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 21:23:18,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,426 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,469 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,498 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,540 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,664 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:18,809 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:19,724 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:21,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:22,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:34,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:43,550 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:23:55,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-01-28 21:24:02,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown