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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:16:43,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:16:43,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:16:43,711 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:16:43,711 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:16:43,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:16:43,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:16:43,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:16:43,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:16:43,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:16:43,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:16:43,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:16:43,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:16:43,719 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:16:43,719 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:16:43,721 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:16:43,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:16:43,724 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:16:43,725 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:16:43,726 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:16:43,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:16:43,731 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 09:16:43,731 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 09:16:43,732 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 09:16:43,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:16:43,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:16:43,742 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:16:43,742 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:16:43,743 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:16:43,743 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:16:43,743 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:16:43,743 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:16:43,743 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:16:43,744 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:16:43,745 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:16:43,745 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:16:43,745 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:16:43,745 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:16:43,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:16:43,745 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:16:43,746 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 09:16:43,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 09:16:43,746 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 09:16:43,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:16:43,782 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:16:43,784 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:16:43,785 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:16:43,785 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:16:43,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-02-02 09:16:43,876 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:16:43,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:16:43,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:16:43,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:16:43,883 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:16:43,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:16:43" (1/1) ... [2018-02-02 09:16:43,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dac164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:43, skipping insertion in model container [2018-02-02 09:16:43,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:16:43" (1/1) ... [2018-02-02 09:16:43,897 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:16:43,910 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:16:43,995 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:16:44,006 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:16:44,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44 WrapperNode [2018-02-02 09:16:44,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:16:44,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:16:44,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:16:44,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:16:44,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... [2018-02-02 09:16:44,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:16:44,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:16:44,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:16:44,040 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:16:44,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:44,088 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:16:44,088 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:16:44,088 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 09:16:44,088 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:16:44,089 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:16:44,259 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:16:44,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:16:44 BoogieIcfgContainer [2018-02-02 09:16:44,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:16:44,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:16:44,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:16:44,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:16:44,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:16:43" (1/3) ... [2018-02-02 09:16:44,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65557da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:16:44, skipping insertion in model container [2018-02-02 09:16:44,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:16:44" (2/3) ... [2018-02-02 09:16:44,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65557da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:16:44, skipping insertion in model container [2018-02-02 09:16:44,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:16:44" (3/3) ... [2018-02-02 09:16:44,267 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-02-02 09:16:44,276 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:16:44,283 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-02-02 09:16:44,317 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:16:44,317 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:16:44,317 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 09:16:44,317 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 09:16:44,317 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:16:44,317 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:16:44,318 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:16:44,318 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:16:44,318 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:16:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-02 09:16:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 09:16:44,338 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:44,339 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:44,339 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-02-02 09:16:44,345 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:44,345 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:44,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,380 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:44,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:44,419 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:44,495 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:16:44,495 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:16:44,496 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:16:44,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:16:44,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:16:44,507 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-02-02 09:16:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:44,555 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-02 09:16:44,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:16:44,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-02-02 09:16:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:44,562 INFO L225 Difference]: With dead ends: 63 [2018-02-02 09:16:44,562 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:16:44,563 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:16:44,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:16:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-02-02 09:16:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 09:16:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-02-02 09:16:44,635 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-02-02 09:16:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:44,635 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-02-02 09:16:44,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:16:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-02-02 09:16:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 09:16:44,636 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:44,636 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:44,636 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:44,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-02-02 09:16:44,636 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:44,636 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:44,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:44,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:44,651 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:44,671 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:16:44,671 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:16:44,672 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:16:44,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:16:44,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:16:44,672 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 3 states. [2018-02-02 09:16:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:44,712 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-02-02 09:16:44,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:16:44,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-02 09:16:44,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:44,715 INFO L225 Difference]: With dead ends: 60 [2018-02-02 09:16:44,716 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:16:44,716 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:16:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:16:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-02-02 09:16:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 09:16:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-02-02 09:16:44,721 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2018-02-02 09:16:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:44,722 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-02-02 09:16:44,722 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:16:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-02-02 09:16:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 09:16:44,722 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:44,723 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:44,723 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-02-02 09:16:44,723 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:44,723 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:44,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,724 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:44,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:44,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:44,838 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:16:44,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:16:44,839 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:16:44,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:16:44,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:16:44,840 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2018-02-02 09:16:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:44,921 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-02-02 09:16:44,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:16:44,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-02-02 09:16:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:44,922 INFO L225 Difference]: With dead ends: 54 [2018-02-02 09:16:44,922 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 09:16:44,922 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:16:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 09:16:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-02-02 09:16:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 09:16:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-02-02 09:16:44,925 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2018-02-02 09:16:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:44,926 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-02-02 09:16:44,926 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:16:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-02-02 09:16:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 09:16:44,926 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:44,926 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:44,926 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-02-02 09:16:44,926 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:44,927 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:44,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,927 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:44,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:44,937 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:44,964 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:16:44,964 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:16:44,964 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:16:44,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:16:44,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:16:44,965 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2018-02-02 09:16:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:45,005 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-02-02 09:16:45,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:16:45,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-02-02 09:16:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:45,006 INFO L225 Difference]: With dead ends: 50 [2018-02-02 09:16:45,006 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 09:16:45,007 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:16:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 09:16:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 09:16:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 09:16:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-02 09:16:45,011 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2018-02-02 09:16:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:45,011 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-02 09:16:45,011 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:16:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-02 09:16:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 09:16:45,012 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:45,012 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:45,012 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:45,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-02-02 09:16:45,012 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:45,012 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:45,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,024 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:45,055 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:45,060 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,103 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:45,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-02-02 09:16:45,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:16:45,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:16:45,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:16:45,104 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2018-02-02 09:16:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:45,124 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-02-02 09:16:45,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:16:45,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-02-02 09:16:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:45,125 INFO L225 Difference]: With dead ends: 65 [2018-02-02 09:16:45,125 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 09:16:45,125 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:16:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 09:16:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2018-02-02 09:16:45,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 09:16:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2018-02-02 09:16:45,136 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 22 [2018-02-02 09:16:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:45,137 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2018-02-02 09:16:45,137 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:16:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2018-02-02 09:16:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 09:16:45,137 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:45,138 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:45,138 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:45,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-02-02 09:16:45,138 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:45,138 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:45,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,139 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,169 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:16:45,169 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:16:45,169 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:16:45,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:16:45,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:16:45,170 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2018-02-02 09:16:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:45,203 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-02-02 09:16:45,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:16:45,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-02 09:16:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:45,204 INFO L225 Difference]: With dead ends: 66 [2018-02-02 09:16:45,204 INFO L226 Difference]: Without dead ends: 66 [2018-02-02 09:16:45,204 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:16:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-02-02 09:16:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2018-02-02 09:16:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 09:16:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-02-02 09:16:45,208 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 23 [2018-02-02 09:16:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:45,208 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-02-02 09:16:45,208 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:16:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-02-02 09:16:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-02 09:16:45,209 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:45,209 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:45,209 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:45,210 INFO L82 PathProgramCache]: Analyzing trace with hash -280350351, now seen corresponding path program 2 times [2018-02-02 09:16:45,210 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:45,210 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:45,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,211 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,221 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,273 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:45,273 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:45,280 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:16:45,291 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:45,295 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:45,296 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:45,298 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,379 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:16:45,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2018-02-02 09:16:45,380 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 09:16:45,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 09:16:45,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:16:45,380 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 12 states. [2018-02-02 09:16:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:45,512 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2018-02-02 09:16:45,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:16:45,512 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-02-02 09:16:45,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:45,513 INFO L225 Difference]: With dead ends: 88 [2018-02-02 09:16:45,513 INFO L226 Difference]: Without dead ends: 88 [2018-02-02 09:16:45,515 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2018-02-02 09:16:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-02-02 09:16:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2018-02-02 09:16:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-02-02 09:16:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2018-02-02 09:16:45,519 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 28 [2018-02-02 09:16:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:45,519 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2018-02-02 09:16:45,519 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 09:16:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2018-02-02 09:16:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 09:16:45,520 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:45,520 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:45,520 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:45,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1474818454, now seen corresponding path program 1 times [2018-02-02 09:16:45,520 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:45,521 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:45,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,522 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:45,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,531 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,552 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:45,552 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:45,559 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,568 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:16:45,613 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:16:45,613 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-02-02 09:16:45,613 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 09:16:45,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 09:16:45,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:16:45,613 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 7 states. [2018-02-02 09:16:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:45,730 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2018-02-02 09:16:45,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 09:16:45,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-02-02 09:16:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:45,731 INFO L225 Difference]: With dead ends: 104 [2018-02-02 09:16:45,731 INFO L226 Difference]: Without dead ends: 98 [2018-02-02 09:16:45,732 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:16:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-02 09:16:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 81. [2018-02-02 09:16:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 09:16:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-02-02 09:16:45,738 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 31 [2018-02-02 09:16:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:45,738 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-02-02 09:16:45,739 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 09:16:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-02-02 09:16:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-02-02 09:16:45,740 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:45,740 INFO L351 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:45,740 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1033895800, now seen corresponding path program 1 times [2018-02-02 09:16:45,740 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:45,740 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:45,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,741 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-02-02 09:16:45,823 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:45,823 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:45,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:45,848 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-02-02 09:16:45,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:45,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-02-02 09:16:45,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 09:16:45,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 09:16:45,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:16:45,906 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 8 states. [2018-02-02 09:16:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:45,982 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-02-02 09:16:45,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:16:45,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-02-02 09:16:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:45,983 INFO L225 Difference]: With dead ends: 90 [2018-02-02 09:16:45,984 INFO L226 Difference]: Without dead ends: 84 [2018-02-02 09:16:45,984 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:16:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-02-02 09:16:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2018-02-02 09:16:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 09:16:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2018-02-02 09:16:45,988 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 46 [2018-02-02 09:16:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:45,988 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2018-02-02 09:16:45,988 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 09:16:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2018-02-02 09:16:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-02-02 09:16:45,989 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:45,989 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:45,989 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash -821508032, now seen corresponding path program 2 times [2018-02-02 09:16:45,990 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:45,990 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:45,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:45,991 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:45,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:46,003 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-02-02 09:16:46,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:46,055 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:46,061 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:16:46,076 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:46,088 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:46,091 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:46,093 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-02-02 09:16:46,131 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:46,131 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-02-02 09:16:46,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:16:46,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:16:46,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:16:46,132 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 5 states. [2018-02-02 09:16:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:46,165 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2018-02-02 09:16:46,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:16:46,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2018-02-02 09:16:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:46,166 INFO L225 Difference]: With dead ends: 93 [2018-02-02 09:16:46,166 INFO L226 Difference]: Without dead ends: 93 [2018-02-02 09:16:46,166 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:16:46,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-02-02 09:16:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2018-02-02 09:16:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-02-02 09:16:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2018-02-02 09:16:46,169 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 52 [2018-02-02 09:16:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:46,170 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2018-02-02 09:16:46,170 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:16:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2018-02-02 09:16:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-02-02 09:16:46,171 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:46,171 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:46,171 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:46,171 INFO L82 PathProgramCache]: Analyzing trace with hash -828115272, now seen corresponding path program 3 times [2018-02-02 09:16:46,171 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:46,171 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:46,172 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,172 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:46,172 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:46,185 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-02-02 09:16:46,258 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:46,258 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:46,265 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:16:46,276 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:46,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:46,284 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:46,286 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-02-02 09:16:46,351 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:46,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-02-02 09:16:46,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 09:16:46,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 09:16:46,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-02-02 09:16:46,352 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 14 states. [2018-02-02 09:16:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:46,559 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2018-02-02 09:16:46,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:16:46,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2018-02-02 09:16:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:46,560 INFO L225 Difference]: With dead ends: 128 [2018-02-02 09:16:46,560 INFO L226 Difference]: Without dead ends: 128 [2018-02-02 09:16:46,561 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-02-02 09:16:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-02-02 09:16:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2018-02-02 09:16:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-02-02 09:16:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-02-02 09:16:46,566 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 58 [2018-02-02 09:16:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:46,566 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-02-02 09:16:46,566 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 09:16:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-02-02 09:16:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-02-02 09:16:46,567 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:46,567 INFO L351 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:46,568 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash -81663113, now seen corresponding path program 1 times [2018-02-02 09:16:46,568 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:46,568 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:46,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,569 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:46,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:46,581 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-02-02 09:16:46,639 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:46,639 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:46,644 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:46,663 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-02-02 09:16:46,749 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:46,750 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-02-02 09:16:46,750 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 09:16:46,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 09:16:46,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-02-02 09:16:46,750 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 14 states. [2018-02-02 09:16:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:46,897 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2018-02-02 09:16:46,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 09:16:46,897 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2018-02-02 09:16:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:46,898 INFO L225 Difference]: With dead ends: 108 [2018-02-02 09:16:46,898 INFO L226 Difference]: Without dead ends: 102 [2018-02-02 09:16:46,899 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2018-02-02 09:16:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-02-02 09:16:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2018-02-02 09:16:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-02-02 09:16:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2018-02-02 09:16:46,903 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 67 [2018-02-02 09:16:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:46,903 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2018-02-02 09:16:46,903 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 09:16:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2018-02-02 09:16:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-02-02 09:16:46,904 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:46,904 INFO L351 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:46,905 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:46,905 INFO L82 PathProgramCache]: Analyzing trace with hash -85555777, now seen corresponding path program 4 times [2018-02-02 09:16:46,905 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:46,905 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:46,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,906 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:46,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:46,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 121 proven. 27 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-02-02 09:16:46,986 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:46,986 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:46,995 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:16:47,020 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:47,022 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 121 proven. 27 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-02-02 09:16:47,060 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:47,060 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2018-02-02 09:16:47,060 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:16:47,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:16:47,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:16:47,060 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 10 states. [2018-02-02 09:16:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:47,106 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-02-02 09:16:47,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:16:47,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2018-02-02 09:16:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:47,108 INFO L225 Difference]: With dead ends: 104 [2018-02-02 09:16:47,108 INFO L226 Difference]: Without dead ends: 104 [2018-02-02 09:16:47,108 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:16:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-02-02 09:16:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2018-02-02 09:16:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-02-02 09:16:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2018-02-02 09:16:47,112 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 88 [2018-02-02 09:16:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:47,112 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2018-02-02 09:16:47,112 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:16:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2018-02-02 09:16:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-02-02 09:16:47,113 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:47,113 INFO L351 BasicCegarLoop]: trace histogram [12, 10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:47,114 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:47,114 INFO L82 PathProgramCache]: Analyzing trace with hash 414669047, now seen corresponding path program 5 times [2018-02-02 09:16:47,114 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:47,114 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:47,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:47,115 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:47,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:47,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 194 proven. 25 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-02-02 09:16:47,228 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:47,228 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:47,234 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:16:47,245 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:47,249 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:47,254 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:47,258 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:47,263 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:47,264 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:47,266 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 205 proven. 14 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-02-02 09:16:47,391 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:47,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2018-02-02 09:16:47,391 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-02 09:16:47,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-02 09:16:47,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-02-02 09:16:47,392 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 18 states. [2018-02-02 09:16:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:47,561 INFO L93 Difference]: Finished difference Result 139 states and 142 transitions. [2018-02-02 09:16:47,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 09:16:47,561 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-02-02 09:16:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:47,562 INFO L225 Difference]: With dead ends: 139 [2018-02-02 09:16:47,562 INFO L226 Difference]: Without dead ends: 139 [2018-02-02 09:16:47,562 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2018-02-02 09:16:47,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-02-02 09:16:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2018-02-02 09:16:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-02-02 09:16:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2018-02-02 09:16:47,566 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 94 [2018-02-02 09:16:47,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:47,566 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2018-02-02 09:16:47,566 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-02 09:16:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2018-02-02 09:16:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-02-02 09:16:47,567 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:47,567 INFO L351 BasicCegarLoop]: trace histogram [16, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:47,567 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:47,567 INFO L82 PathProgramCache]: Analyzing trace with hash 347418750, now seen corresponding path program 6 times [2018-02-02 09:16:47,567 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:47,568 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:47,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:47,568 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:47,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:47,584 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 401 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-02-02 09:16:47,662 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:47,663 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:47,667 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:16:47,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:47,678 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:47,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:47,684 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:47,691 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:47,696 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:47,697 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:47,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 313 proven. 119 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-02-02 09:16:47,832 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:47,833 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-02-02 09:16:47,833 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-02-02 09:16:47,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-02-02 09:16:47,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-02-02 09:16:47,833 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 21 states. [2018-02-02 09:16:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:48,168 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-02-02 09:16:48,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-02 09:16:48,168 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 124 [2018-02-02 09:16:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:48,169 INFO L225 Difference]: With dead ends: 145 [2018-02-02 09:16:48,169 INFO L226 Difference]: Without dead ends: 139 [2018-02-02 09:16:48,170 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-02-02 09:16:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-02-02 09:16:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2018-02-02 09:16:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-02-02 09:16:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2018-02-02 09:16:48,173 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 124 [2018-02-02 09:16:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:48,174 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2018-02-02 09:16:48,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-02-02 09:16:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2018-02-02 09:16:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-02-02 09:16:48,175 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:48,175 INFO L351 BasicCegarLoop]: trace histogram [17, 14, 13, 13, 13, 13, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:48,175 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:48,176 INFO L82 PathProgramCache]: Analyzing trace with hash 714000310, now seen corresponding path program 7 times [2018-02-02 09:16:48,176 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:48,176 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:48,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:48,177 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:48,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:48,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 273 proven. 48 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-02-02 09:16:48,270 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:48,270 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:48,277 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:48,299 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 273 proven. 48 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-02-02 09:16:48,329 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:48,329 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-02-02 09:16:48,330 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 09:16:48,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 09:16:48,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:16:48,330 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 7 states. [2018-02-02 09:16:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:48,380 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-02-02 09:16:48,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 09:16:48,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2018-02-02 09:16:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:48,381 INFO L225 Difference]: With dead ends: 146 [2018-02-02 09:16:48,381 INFO L226 Difference]: Without dead ends: 146 [2018-02-02 09:16:48,381 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:16:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-02-02 09:16:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2018-02-02 09:16:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-02-02 09:16:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-02-02 09:16:48,383 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 130 [2018-02-02 09:16:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:48,383 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-02-02 09:16:48,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 09:16:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-02-02 09:16:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-02-02 09:16:48,384 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:48,384 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:48,384 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:48,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1770915246, now seen corresponding path program 8 times [2018-02-02 09:16:48,385 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:48,385 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:48,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:48,385 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:48,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:48,396 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 397 proven. 44 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 09:16:48,506 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:48,506 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:48,511 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:16:48,521 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:48,536 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:48,540 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:48,543 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 411 proven. 30 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 09:16:48,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:48,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2018-02-02 09:16:48,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-02-02 09:16:48,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-02-02 09:16:48,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-02-02 09:16:48,680 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 21 states. [2018-02-02 09:16:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:48,889 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2018-02-02 09:16:48,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 09:16:48,889 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2018-02-02 09:16:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:48,890 INFO L225 Difference]: With dead ends: 187 [2018-02-02 09:16:48,890 INFO L226 Difference]: Without dead ends: 187 [2018-02-02 09:16:48,891 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2018-02-02 09:16:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-02-02 09:16:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2018-02-02 09:16:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-02-02 09:16:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2018-02-02 09:16:48,895 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 136 [2018-02-02 09:16:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:48,896 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2018-02-02 09:16:48,896 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-02-02 09:16:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2018-02-02 09:16:48,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-02-02 09:16:48,898 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:48,898 INFO L351 BasicCegarLoop]: trace histogram [23, 19, 18, 18, 18, 18, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:48,898 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:48,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1745720749, now seen corresponding path program 9 times [2018-02-02 09:16:48,898 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:48,898 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:48,899 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:48,899 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:48,899 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:48,917 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 806 proven. 44 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-02-02 09:16:49,005 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:49,005 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:49,009 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:16:49,019 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:49,022 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:49,026 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:49,032 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:49,039 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:49,040 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:49,042 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 503 proven. 57 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-02-02 09:16:49,149 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:49,149 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2018-02-02 09:16:49,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 09:16:49,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 09:16:49,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2018-02-02 09:16:49,150 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand 22 states. [2018-02-02 09:16:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:49,537 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-02-02 09:16:49,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-02-02 09:16:49,537 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 172 [2018-02-02 09:16:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:49,538 INFO L225 Difference]: With dead ends: 242 [2018-02-02 09:16:49,538 INFO L226 Difference]: Without dead ends: 233 [2018-02-02 09:16:49,538 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=365, Invalid=1705, Unknown=0, NotChecked=0, Total=2070 [2018-02-02 09:16:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-02-02 09:16:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 224. [2018-02-02 09:16:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-02-02 09:16:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2018-02-02 09:16:49,541 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 172 [2018-02-02 09:16:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:49,541 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2018-02-02 09:16:49,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 09:16:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2018-02-02 09:16:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-02-02 09:16:49,543 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:49,543 INFO L351 BasicCegarLoop]: trace histogram [30, 25, 24, 24, 24, 24, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:49,543 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:49,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1417597148, now seen corresponding path program 10 times [2018-02-02 09:16:49,543 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:49,543 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:49,544 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:49,544 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:49,544 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:49,560 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1280 proven. 70 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-02-02 09:16:49,757 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:49,757 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:49,762 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:16:49,796 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:49,800 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1280 proven. 70 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-02-02 09:16:49,890 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:49,890 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-02-02 09:16:49,891 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-02-02 09:16:49,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-02-02 09:16:49,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-02-02 09:16:49,891 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 20 states. [2018-02-02 09:16:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:50,048 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2018-02-02 09:16:50,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 09:16:50,048 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 220 [2018-02-02 09:16:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:50,049 INFO L225 Difference]: With dead ends: 250 [2018-02-02 09:16:50,049 INFO L226 Difference]: Without dead ends: 244 [2018-02-02 09:16:50,050 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-02-02 09:16:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-02-02 09:16:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 235. [2018-02-02 09:16:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-02-02 09:16:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-02-02 09:16:50,052 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 220 [2018-02-02 09:16:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:50,053 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-02-02 09:16:50,053 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-02-02 09:16:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-02-02 09:16:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-02-02 09:16:50,053 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:50,053 INFO L351 BasicCegarLoop]: trace histogram [31, 26, 25, 25, 25, 25, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:50,053 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:50,054 INFO L82 PathProgramCache]: Analyzing trace with hash 11647380, now seen corresponding path program 11 times [2018-02-02 09:16:50,054 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:50,054 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:50,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:50,054 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:50,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:50,068 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 720 proven. 75 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 09:16:50,151 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:50,151 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:50,156 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:16:50,181 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,192 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,198 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,204 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,210 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,215 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,221 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:50,223 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:50,225 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 720 proven. 75 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 09:16:50,283 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:50,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-02-02 09:16:50,284 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 09:16:50,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 09:16:50,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:16:50,284 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 15 states. [2018-02-02 09:16:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:50,404 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-02-02 09:16:50,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 09:16:50,405 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2018-02-02 09:16:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:50,406 INFO L225 Difference]: With dead ends: 243 [2018-02-02 09:16:50,406 INFO L226 Difference]: Without dead ends: 243 [2018-02-02 09:16:50,406 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:16:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-02-02 09:16:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2018-02-02 09:16:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-02-02 09:16:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-02-02 09:16:50,412 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 226 [2018-02-02 09:16:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:50,413 INFO L432 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-02-02 09:16:50,413 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 09:16:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-02-02 09:16:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-02-02 09:16:50,414 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:50,414 INFO L351 BasicCegarLoop]: trace histogram [32, 27, 26, 26, 26, 26, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:50,414 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1000315148, now seen corresponding path program 12 times [2018-02-02 09:16:50,415 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:50,415 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:50,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:50,415 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:50,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:50,438 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 850 proven. 108 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 09:16:50,570 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:50,570 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:50,581 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:16:50,598 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,605 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,611 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,619 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,648 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,656 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:50,657 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:50,661 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 850 proven. 108 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 09:16:50,750 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:50,751 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-02-02 09:16:50,751 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 09:16:50,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 09:16:50,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-02-02 09:16:50,752 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 14 states. [2018-02-02 09:16:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:50,858 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-02-02 09:16:50,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:16:50,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2018-02-02 09:16:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:50,859 INFO L225 Difference]: With dead ends: 261 [2018-02-02 09:16:50,859 INFO L226 Difference]: Without dead ends: 261 [2018-02-02 09:16:50,859 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-02-02 09:16:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-02-02 09:16:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 242. [2018-02-02 09:16:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-02-02 09:16:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 245 transitions. [2018-02-02 09:16:50,862 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 245 transitions. Word has length 232 [2018-02-02 09:16:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:50,862 INFO L432 AbstractCegarLoop]: Abstraction has 242 states and 245 transitions. [2018-02-02 09:16:50,862 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 09:16:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 245 transitions. [2018-02-02 09:16:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-02-02 09:16:50,863 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:50,863 INFO L351 BasicCegarLoop]: trace histogram [33, 28, 27, 27, 27, 27, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:50,863 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:50,864 INFO L82 PathProgramCache]: Analyzing trace with hash 710278788, now seen corresponding path program 13 times [2018-02-02 09:16:50,864 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:50,864 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:50,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:50,865 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:50,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:50,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 1112 proven. 100 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2018-02-02 09:16:51,068 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:51,068 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:51,074 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:51,114 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 1132 proven. 80 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2018-02-02 09:16:51,261 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:51,261 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 27 [2018-02-02 09:16:51,262 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-02-02 09:16:51,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-02-02 09:16:51,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2018-02-02 09:16:51,262 INFO L87 Difference]: Start difference. First operand 242 states and 245 transitions. Second operand 27 states. [2018-02-02 09:16:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:51,515 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2018-02-02 09:16:51,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-02-02 09:16:51,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 238 [2018-02-02 09:16:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:51,517 INFO L225 Difference]: With dead ends: 310 [2018-02-02 09:16:51,517 INFO L226 Difference]: Without dead ends: 310 [2018-02-02 09:16:51,518 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=429, Invalid=1131, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 09:16:51,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-02-02 09:16:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2018-02-02 09:16:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-02-02 09:16:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 306 transitions. [2018-02-02 09:16:51,522 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 306 transitions. Word has length 238 [2018-02-02 09:16:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:51,522 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 306 transitions. [2018-02-02 09:16:51,522 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-02-02 09:16:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 306 transitions. [2018-02-02 09:16:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-02-02 09:16:51,524 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:51,524 INFO L351 BasicCegarLoop]: trace histogram [40, 34, 33, 33, 33, 33, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:51,524 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:51,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1500368397, now seen corresponding path program 14 times [2018-02-02 09:16:51,524 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:51,524 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:51,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:51,525 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:51,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:51,546 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 2231 proven. 102 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2018-02-02 09:16:51,853 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:51,853 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:51,868 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:16:51,916 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:51,945 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:51,950 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:51,955 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 2231 proven. 102 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2018-02-02 09:16:52,122 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:52,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2018-02-02 09:16:52,123 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-02-02 09:16:52,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-02-02 09:16:52,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2018-02-02 09:16:52,124 INFO L87 Difference]: Start difference. First operand 302 states and 306 transitions. Second operand 23 states. [2018-02-02 09:16:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:52,391 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-02-02 09:16:52,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-02 09:16:52,391 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 286 [2018-02-02 09:16:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:52,392 INFO L225 Difference]: With dead ends: 314 [2018-02-02 09:16:52,392 INFO L226 Difference]: Without dead ends: 308 [2018-02-02 09:16:52,393 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2018-02-02 09:16:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-02-02 09:16:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2018-02-02 09:16:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-02-02 09:16:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 304 transitions. [2018-02-02 09:16:52,397 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 304 transitions. Word has length 286 [2018-02-02 09:16:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:52,397 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 304 transitions. [2018-02-02 09:16:52,397 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-02-02 09:16:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 304 transitions. [2018-02-02 09:16:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-02-02 09:16:52,399 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:52,399 INFO L351 BasicCegarLoop]: trace histogram [41, 35, 34, 34, 34, 34, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:52,399 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1441975659, now seen corresponding path program 15 times [2018-02-02 09:16:52,400 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:52,400 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:52,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:52,401 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:52,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:52,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 1311 proven. 147 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-02-02 09:16:52,640 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:52,641 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:52,648 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:16:52,667 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,671 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,677 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,684 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,693 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,705 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,721 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,736 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:52,739 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:52,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 1311 proven. 147 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-02-02 09:16:52,817 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:52,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-02-02 09:16:52,817 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 09:16:52,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 09:16:52,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:16:52,818 INFO L87 Difference]: Start difference. First operand 302 states and 304 transitions. Second operand 12 states. [2018-02-02 09:16:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:52,917 INFO L93 Difference]: Finished difference Result 317 states and 320 transitions. [2018-02-02 09:16:52,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:16:52,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2018-02-02 09:16:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:52,919 INFO L225 Difference]: With dead ends: 317 [2018-02-02 09:16:52,919 INFO L226 Difference]: Without dead ends: 317 [2018-02-02 09:16:52,919 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2018-02-02 09:16:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-02-02 09:16:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 308. [2018-02-02 09:16:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-02-02 09:16:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 311 transitions. [2018-02-02 09:16:52,927 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 311 transitions. Word has length 292 [2018-02-02 09:16:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:52,928 INFO L432 AbstractCegarLoop]: Abstraction has 308 states and 311 transitions. [2018-02-02 09:16:52,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 09:16:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 311 transitions. [2018-02-02 09:16:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-02-02 09:16:52,929 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:52,930 INFO L351 BasicCegarLoop]: trace histogram [42, 36, 35, 35, 35, 35, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:52,930 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1608658851, now seen corresponding path program 16 times [2018-02-02 09:16:52,930 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:52,930 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:52,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:52,932 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:52,932 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:52,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4317 backedges. 1660 proven. 137 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-02-02 09:16:53,378 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:53,378 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:53,405 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:16:53,451 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:53,454 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4317 backedges. 1683 proven. 114 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-02-02 09:16:53,656 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:53,656 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 30 [2018-02-02 09:16:53,657 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-02-02 09:16:53,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-02-02 09:16:53,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2018-02-02 09:16:53,657 INFO L87 Difference]: Start difference. First operand 308 states and 311 transitions. Second operand 30 states. [2018-02-02 09:16:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:54,154 INFO L93 Difference]: Finished difference Result 376 states and 380 transitions. [2018-02-02 09:16:54,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-02 09:16:54,155 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 298 [2018-02-02 09:16:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:54,156 INFO L225 Difference]: With dead ends: 376 [2018-02-02 09:16:54,156 INFO L226 Difference]: Without dead ends: 376 [2018-02-02 09:16:54,157 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=538, Invalid=1442, Unknown=0, NotChecked=0, Total=1980 [2018-02-02 09:16:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-02-02 09:16:54,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 368. [2018-02-02 09:16:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-02-02 09:16:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 372 transitions. [2018-02-02 09:16:54,163 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 372 transitions. Word has length 298 [2018-02-02 09:16:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:54,164 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 372 transitions. [2018-02-02 09:16:54,164 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-02-02 09:16:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 372 transitions. [2018-02-02 09:16:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-02-02 09:16:54,166 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:54,166 INFO L351 BasicCegarLoop]: trace histogram [50, 43, 42, 42, 42, 42, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:54,166 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1060515318, now seen corresponding path program 17 times [2018-02-02 09:16:54,166 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:54,166 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:54,167 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:54,167 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:54,167 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:54,191 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6181 backedges. 3323 proven. 140 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2018-02-02 09:16:54,529 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:54,530 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:54,536 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:16:54,555 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,556 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,559 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,564 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,573 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,578 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,585 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,617 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,625 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:54,626 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:54,629 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6181 backedges. 3323 proven. 140 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2018-02-02 09:16:54,832 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:54,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2018-02-02 09:16:54,833 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-02 09:16:54,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-02 09:16:54,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2018-02-02 09:16:54,834 INFO L87 Difference]: Start difference. First operand 368 states and 372 transitions. Second operand 26 states. [2018-02-02 09:16:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:55,000 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-02-02 09:16:55,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-02-02 09:16:55,001 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 352 [2018-02-02 09:16:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:55,002 INFO L225 Difference]: With dead ends: 380 [2018-02-02 09:16:55,002 INFO L226 Difference]: Without dead ends: 374 [2018-02-02 09:16:55,002 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2018-02-02 09:16:55,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-02-02 09:16:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 368. [2018-02-02 09:16:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-02-02 09:16:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 370 transitions. [2018-02-02 09:16:55,006 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 370 transitions. Word has length 352 [2018-02-02 09:16:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:55,006 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 370 transitions. [2018-02-02 09:16:55,006 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-02 09:16:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 370 transitions. [2018-02-02 09:16:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-02-02 09:16:55,007 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:55,008 INFO L351 BasicCegarLoop]: trace histogram [51, 44, 43, 43, 43, 43, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:55,008 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:55,008 INFO L82 PathProgramCache]: Analyzing trace with hash -211464126, now seen corresponding path program 18 times [2018-02-02 09:16:55,008 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:55,008 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:55,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:55,008 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:55,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:55,026 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6450 backedges. 1911 proven. 192 refuted. 0 times theorem prover too weak. 4347 trivial. 0 not checked. [2018-02-02 09:16:55,515 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:55,516 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:55,523 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:16:55,545 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,549 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,553 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,561 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,565 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,571 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,577 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,587 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,597 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,613 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:16:55,616 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:55,620 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6450 backedges. 1955 proven. 162 refuted. 0 times theorem prover too weak. 4333 trivial. 0 not checked. [2018-02-02 09:16:55,825 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:55,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2018-02-02 09:16:55,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-02-02 09:16:55,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-02-02 09:16:55,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2018-02-02 09:16:55,827 INFO L87 Difference]: Start difference. First operand 368 states and 370 transitions. Second operand 24 states. [2018-02-02 09:16:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:56,380 INFO L93 Difference]: Finished difference Result 458 states and 463 transitions. [2018-02-02 09:16:56,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-02-02 09:16:56,380 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 358 [2018-02-02 09:16:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:56,382 INFO L225 Difference]: With dead ends: 458 [2018-02-02 09:16:56,382 INFO L226 Difference]: Without dead ends: 458 [2018-02-02 09:16:56,383 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 09:16:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2018-02-02 09:16:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 434. [2018-02-02 09:16:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-02-02 09:16:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 438 transitions. [2018-02-02 09:16:56,391 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 438 transitions. Word has length 358 [2018-02-02 09:16:56,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:56,391 INFO L432 AbstractCegarLoop]: Abstraction has 434 states and 438 transitions. [2018-02-02 09:16:56,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-02-02 09:16:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 438 transitions. [2018-02-02 09:16:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-02-02 09:16:56,394 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:56,394 INFO L351 BasicCegarLoop]: trace histogram [61, 53, 52, 52, 52, 52, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:56,395 INFO L371 AbstractCegarLoop]: === Iteration 28 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash -894569959, now seen corresponding path program 19 times [2018-02-02 09:16:56,395 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:56,395 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:56,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:56,396 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:56,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:56,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9336 backedges. 4716 proven. 184 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2018-02-02 09:16:56,791 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:56,792 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:56,796 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:56,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9336 backedges. 4716 proven. 184 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2018-02-02 09:16:57,229 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:57,229 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 29 [2018-02-02 09:16:57,230 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-02-02 09:16:57,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-02-02 09:16:57,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2018-02-02 09:16:57,230 INFO L87 Difference]: Start difference. First operand 434 states and 438 transitions. Second operand 29 states. [2018-02-02 09:16:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:57,543 INFO L93 Difference]: Finished difference Result 456 states and 459 transitions. [2018-02-02 09:16:57,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-02 09:16:57,544 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 424 [2018-02-02 09:16:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:57,545 INFO L225 Difference]: With dead ends: 456 [2018-02-02 09:16:57,546 INFO L226 Difference]: Without dead ends: 450 [2018-02-02 09:16:57,546 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 09:16:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-02-02 09:16:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 440. [2018-02-02 09:16:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2018-02-02 09:16:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 443 transitions. [2018-02-02 09:16:57,553 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 443 transitions. Word has length 424 [2018-02-02 09:16:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:57,554 INFO L432 AbstractCegarLoop]: Abstraction has 440 states and 443 transitions. [2018-02-02 09:16:57,554 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-02-02 09:16:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 443 transitions. [2018-02-02 09:16:57,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-02-02 09:16:57,556 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:57,556 INFO L351 BasicCegarLoop]: trace histogram [62, 54, 53, 53, 53, 53, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:57,557 INFO L371 AbstractCegarLoop]: === Iteration 29 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1459193583, now seen corresponding path program 20 times [2018-02-02 09:16:57,557 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:57,557 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:57,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:57,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:16:57,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:57,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9667 backedges. 2668 proven. 243 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-02-02 09:16:58,074 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:58,074 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:58,078 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:16:58,090 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:58,125 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:16:58,133 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:58,138 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9667 backedges. 2668 proven. 243 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-02-02 09:16:58,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:58,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2018-02-02 09:16:58,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 09:16:58,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 09:16:58,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2018-02-02 09:16:58,278 INFO L87 Difference]: Start difference. First operand 440 states and 443 transitions. Second operand 22 states. [2018-02-02 09:16:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:16:58,408 INFO L93 Difference]: Finished difference Result 468 states and 473 transitions. [2018-02-02 09:16:58,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:16:58,408 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 430 [2018-02-02 09:16:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:16:58,410 INFO L225 Difference]: With dead ends: 468 [2018-02-02 09:16:58,410 INFO L226 Difference]: Without dead ends: 468 [2018-02-02 09:16:58,411 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2018-02-02 09:16:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2018-02-02 09:16:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 446. [2018-02-02 09:16:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-02-02 09:16:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 450 transitions. [2018-02-02 09:16:58,417 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 450 transitions. Word has length 430 [2018-02-02 09:16:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:16:58,417 INFO L432 AbstractCegarLoop]: Abstraction has 446 states and 450 transitions. [2018-02-02 09:16:58,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 09:16:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 450 transitions. [2018-02-02 09:16:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-02-02 09:16:58,420 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:16:58,420 INFO L351 BasicCegarLoop]: trace histogram [63, 55, 54, 54, 54, 54, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:16:58,420 INFO L371 AbstractCegarLoop]: === Iteration 30 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:16:58,420 INFO L82 PathProgramCache]: Analyzing trace with hash -275511607, now seen corresponding path program 21 times [2018-02-02 09:16:58,420 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:16:58,420 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:16:58,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:58,421 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:16:58,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:16:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:16:58,452 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:16:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10004 backedges. 3227 proven. 229 refuted. 0 times theorem prover too weak. 6548 trivial. 0 not checked. [2018-02-02 09:16:58,953 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:16:58,953 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:16:58,962 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:16:58,980 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:58,984 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:58,988 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:58,993 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,003 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,015 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,029 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,047 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,063 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,085 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,105 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:16:59,109 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:16:59,115 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:16:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10004 backedges. 2948 proven. 300 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-02-02 09:16:59,374 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:16:59,374 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 36 [2018-02-02 09:16:59,375 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-02-02 09:16:59,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-02-02 09:16:59,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 09:16:59,375 INFO L87 Difference]: Start difference. First operand 446 states and 450 transitions. Second operand 36 states. [2018-02-02 09:17:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:00,298 INFO L93 Difference]: Finished difference Result 550 states and 556 transitions. [2018-02-02 09:17:00,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-02-02 09:17:00,299 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 436 [2018-02-02 09:17:00,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:00,300 INFO L225 Difference]: With dead ends: 550 [2018-02-02 09:17:00,300 INFO L226 Difference]: Without dead ends: 550 [2018-02-02 09:17:00,301 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2018-02-02 09:17:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2018-02-02 09:17:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 530. [2018-02-02 09:17:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-02-02 09:17:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 536 transitions. [2018-02-02 09:17:00,308 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 536 transitions. Word has length 436 [2018-02-02 09:17:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:00,308 INFO L432 AbstractCegarLoop]: Abstraction has 530 states and 536 transitions. [2018-02-02 09:17:00,309 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-02-02 09:17:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 536 transitions. [2018-02-02 09:17:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-02-02 09:17:00,312 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:00,312 INFO L351 BasicCegarLoop]: trace histogram [74, 65, 64, 64, 64, 64, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:00,312 INFO L371 AbstractCegarLoop]: === Iteration 31 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:00,312 INFO L82 PathProgramCache]: Analyzing trace with hash -619007464, now seen corresponding path program 22 times [2018-02-02 09:17:00,313 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:00,313 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:00,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:00,313 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:00,314 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:00,349 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13935 backedges. 6782 proven. 234 refuted. 0 times theorem prover too weak. 6919 trivial. 0 not checked. [2018-02-02 09:17:00,856 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:00,856 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:17:00,861 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:17:00,935 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:00,940 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13935 backedges. 6782 proven. 234 refuted. 0 times theorem prover too weak. 6919 trivial. 0 not checked. [2018-02-02 09:17:01,238 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:01,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2018-02-02 09:17:01,239 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-02-02 09:17:01,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-02-02 09:17:01,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2018-02-02 09:17:01,240 INFO L87 Difference]: Start difference. First operand 530 states and 536 transitions. Second operand 32 states. [2018-02-02 09:17:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:01,702 INFO L93 Difference]: Finished difference Result 542 states and 546 transitions. [2018-02-02 09:17:01,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-02-02 09:17:01,702 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 508 [2018-02-02 09:17:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:01,704 INFO L225 Difference]: With dead ends: 542 [2018-02-02 09:17:01,704 INFO L226 Difference]: Without dead ends: 536 [2018-02-02 09:17:01,705 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=1185, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 09:17:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2018-02-02 09:17:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 530. [2018-02-02 09:17:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-02-02 09:17:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 534 transitions. [2018-02-02 09:17:01,712 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 534 transitions. Word has length 508 [2018-02-02 09:17:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:01,713 INFO L432 AbstractCegarLoop]: Abstraction has 530 states and 534 transitions. [2018-02-02 09:17:01,713 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-02-02 09:17:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 534 transitions. [2018-02-02 09:17:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-02-02 09:17:01,715 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:01,716 INFO L351 BasicCegarLoop]: trace histogram [75, 66, 65, 65, 65, 65, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:01,716 INFO L371 AbstractCegarLoop]: === Iteration 32 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash -387441200, now seen corresponding path program 23 times [2018-02-02 09:17:01,716 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:01,716 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:01,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:01,716 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:01,717 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:01,739 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14340 backedges. 4282 proven. 284 refuted. 0 times theorem prover too weak. 9774 trivial. 0 not checked. [2018-02-02 09:17:02,262 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:02,263 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 09:17:02,267 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:17:02,282 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,284 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,285 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,288 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,290 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,293 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,295 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,296 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,298 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,300 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,302 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,305 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,308 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,346 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,387 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,406 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,437 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:02,459 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:02,464 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14340 backedges. 4217 proven. 1477 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2018-02-02 09:17:03,175 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:03,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30] total 43 [2018-02-02 09:17:03,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-02-02 09:17:03,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-02-02 09:17:03,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2018-02-02 09:17:03,177 INFO L87 Difference]: Start difference. First operand 530 states and 534 transitions. Second operand 43 states. [2018-02-02 09:17:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:04,149 INFO L93 Difference]: Finished difference Result 619 states and 624 transitions. [2018-02-02 09:17:04,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-02-02 09:17:04,150 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 514 [2018-02-02 09:17:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:04,151 INFO L225 Difference]: With dead ends: 619 [2018-02-02 09:17:04,151 INFO L226 Difference]: Without dead ends: 619 [2018-02-02 09:17:04,152 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=933, Invalid=3489, Unknown=0, NotChecked=0, Total=4422 [2018-02-02 09:17:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2018-02-02 09:17:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 608. [2018-02-02 09:17:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2018-02-02 09:17:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 613 transitions. [2018-02-02 09:17:04,156 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 613 transitions. Word has length 514 [2018-02-02 09:17:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:04,157 INFO L432 AbstractCegarLoop]: Abstraction has 608 states and 613 transitions. [2018-02-02 09:17:04,157 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-02-02 09:17:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 613 transitions. [2018-02-02 09:17:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-02-02 09:17:04,159 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:04,160 INFO L351 BasicCegarLoop]: trace histogram [86, 76, 75, 75, 75, 75, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:04,160 INFO L371 AbstractCegarLoop]: === Iteration 33 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:04,160 INFO L82 PathProgramCache]: Analyzing trace with hash 595794463, now seen corresponding path program 24 times [2018-02-02 09:17:04,160 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:04,160 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:04,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:04,161 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:04,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:04,181 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18985 backedges. 8549 proven. 290 refuted. 0 times theorem prover too weak. 10146 trivial. 0 not checked. [2018-02-02 09:17:04,735 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:04,735 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:04,751 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:17:04,770 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,775 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,778 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,782 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,787 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,799 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,804 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,811 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,819 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,829 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,838 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,859 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,870 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,922 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,933 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,947 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,970 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:04,973 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:04,979 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18985 backedges. 4718 proven. 321 refuted. 0 times theorem prover too weak. 13946 trivial. 0 not checked. [2018-02-02 09:17:05,309 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:05,309 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 40 [2018-02-02 09:17:05,310 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-02-02 09:17:05,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-02-02 09:17:05,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 09:17:05,310 INFO L87 Difference]: Start difference. First operand 608 states and 613 transitions. Second operand 40 states. [2018-02-02 09:17:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:06,487 INFO L93 Difference]: Finished difference Result 710 states and 714 transitions. [2018-02-02 09:17:06,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-02-02 09:17:06,488 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 586 [2018-02-02 09:17:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:06,489 INFO L225 Difference]: With dead ends: 710 [2018-02-02 09:17:06,489 INFO L226 Difference]: Without dead ends: 701 [2018-02-02 09:17:06,491 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1403, Invalid=7339, Unknown=0, NotChecked=0, Total=8742 [2018-02-02 09:17:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2018-02-02 09:17:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 686. [2018-02-02 09:17:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-02-02 09:17:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 690 transitions. [2018-02-02 09:17:06,496 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 690 transitions. Word has length 586 [2018-02-02 09:17:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:06,496 INFO L432 AbstractCegarLoop]: Abstraction has 686 states and 690 transitions. [2018-02-02 09:17:06,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-02-02 09:17:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 690 transitions. [2018-02-02 09:17:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2018-02-02 09:17:06,499 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:06,499 INFO L351 BasicCegarLoop]: trace histogram [99, 88, 87, 87, 87, 87, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:06,499 INFO L371 AbstractCegarLoop]: === Iteration 34 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash 369724190, now seen corresponding path program 25 times [2018-02-02 09:17:06,499 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:06,499 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:06,500 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:06,500 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:06,500 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:06,522 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25358 backedges. 10583 proven. 352 refuted. 0 times theorem prover too weak. 14423 trivial. 0 not checked. [2018-02-02 09:17:07,366 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:07,366 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:07,373 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:07,471 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 25358 backedges. 10583 proven. 352 refuted. 0 times theorem prover too weak. 14423 trivial. 0 not checked. [2018-02-02 09:17:07,943 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:07,943 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 38 [2018-02-02 09:17:07,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-02-02 09:17:07,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-02-02 09:17:07,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2018-02-02 09:17:07,944 INFO L87 Difference]: Start difference. First operand 686 states and 690 transitions. Second operand 38 states. [2018-02-02 09:17:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:08,485 INFO L93 Difference]: Finished difference Result 718 states and 722 transitions. [2018-02-02 09:17:08,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-02-02 09:17:08,485 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 670 [2018-02-02 09:17:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:08,487 INFO L225 Difference]: With dead ends: 718 [2018-02-02 09:17:08,487 INFO L226 Difference]: Without dead ends: 712 [2018-02-02 09:17:08,487 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=534, Invalid=1722, Unknown=0, NotChecked=0, Total=2256 [2018-02-02 09:17:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-02-02 09:17:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 697. [2018-02-02 09:17:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2018-02-02 09:17:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 701 transitions. [2018-02-02 09:17:08,497 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 701 transitions. Word has length 670 [2018-02-02 09:17:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:08,498 INFO L432 AbstractCegarLoop]: Abstraction has 697 states and 701 transitions. [2018-02-02 09:17:08,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-02-02 09:17:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 701 transitions. [2018-02-02 09:17:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-02-02 09:17:08,502 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:08,503 INFO L351 BasicCegarLoop]: trace histogram [100, 89, 88, 88, 88, 88, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:08,503 INFO L371 AbstractCegarLoop]: === Iteration 35 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash 519412310, now seen corresponding path program 26 times [2018-02-02 09:17:08,503 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:08,503 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:08,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:08,504 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:08,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:08,551 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25905 backedges. 5577 proven. 363 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 09:17:09,094 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:09,094 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:09,099 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:17:09,118 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:09,175 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:09,187 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:09,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 25905 backedges. 5577 proven. 363 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 09:17:09,367 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:09,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-02-02 09:17:09,367 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-02 09:17:09,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-02 09:17:09,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2018-02-02 09:17:09,368 INFO L87 Difference]: Start difference. First operand 697 states and 701 transitions. Second operand 26 states. [2018-02-02 09:17:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:09,615 INFO L93 Difference]: Finished difference Result 711 states and 715 transitions. [2018-02-02 09:17:09,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 09:17:09,615 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 676 [2018-02-02 09:17:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:09,616 INFO L225 Difference]: With dead ends: 711 [2018-02-02 09:17:09,616 INFO L226 Difference]: Without dead ends: 711 [2018-02-02 09:17:09,617 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2018-02-02 09:17:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-02-02 09:17:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 698. [2018-02-02 09:17:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-02-02 09:17:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 702 transitions. [2018-02-02 09:17:09,624 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 702 transitions. Word has length 676 [2018-02-02 09:17:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:09,625 INFO L432 AbstractCegarLoop]: Abstraction has 698 states and 702 transitions. [2018-02-02 09:17:09,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-02 09:17:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 702 transitions. [2018-02-02 09:17:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2018-02-02 09:17:09,630 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:09,630 INFO L351 BasicCegarLoop]: trace histogram [101, 90, 89, 89, 89, 89, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:09,630 INFO L371 AbstractCegarLoop]: === Iteration 36 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:09,631 INFO L82 PathProgramCache]: Analyzing trace with hash -436969394, now seen corresponding path program 27 times [2018-02-02 09:17:09,631 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:09,631 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:09,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:09,631 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:09,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:09,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 26458 backedges. 6061 proven. 432 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 09:17:10,171 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:10,171 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:10,175 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:17:10,196 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,199 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,203 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,208 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,222 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,259 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,270 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,365 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:10,368 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:10,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 26458 backedges. 6061 proven. 432 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 09:17:10,549 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:10,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2018-02-02 09:17:10,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 09:17:10,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 09:17:10,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-02-02 09:17:10,550 INFO L87 Difference]: Start difference. First operand 698 states and 702 transitions. Second operand 22 states. [2018-02-02 09:17:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:10,763 INFO L93 Difference]: Finished difference Result 729 states and 735 transitions. [2018-02-02 09:17:10,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 09:17:10,763 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 682 [2018-02-02 09:17:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:10,764 INFO L225 Difference]: With dead ends: 729 [2018-02-02 09:17:10,765 INFO L226 Difference]: Without dead ends: 729 [2018-02-02 09:17:10,765 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=735, Unknown=0, NotChecked=0, Total=1056 [2018-02-02 09:17:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2018-02-02 09:17:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 704. [2018-02-02 09:17:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2018-02-02 09:17:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 709 transitions. [2018-02-02 09:17:10,770 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 709 transitions. Word has length 682 [2018-02-02 09:17:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:10,771 INFO L432 AbstractCegarLoop]: Abstraction has 704 states and 709 transitions. [2018-02-02 09:17:10,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 09:17:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 709 transitions. [2018-02-02 09:17:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-02-02 09:17:10,774 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:10,774 INFO L351 BasicCegarLoop]: trace histogram [102, 91, 90, 90, 90, 90, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:10,774 INFO L371 AbstractCegarLoop]: === Iteration 37 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:10,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1628752966, now seen corresponding path program 28 times [2018-02-02 09:17:10,774 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:10,774 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:10,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:10,775 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:10,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:10,804 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 27017 backedges. 7025 proven. 412 refuted. 0 times theorem prover too weak. 19580 trivial. 0 not checked. [2018-02-02 09:17:11,680 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:11,680 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:11,684 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:17:11,760 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:11,765 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 27017 backedges. 7063 proven. 374 refuted. 0 times theorem prover too weak. 19580 trivial. 0 not checked. [2018-02-02 09:17:12,206 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:12,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 45 [2018-02-02 09:17:12,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-02-02 09:17:12,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-02-02 09:17:12,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2018-02-02 09:17:12,207 INFO L87 Difference]: Start difference. First operand 704 states and 709 transitions. Second operand 45 states. [2018-02-02 09:17:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:13,055 INFO L93 Difference]: Finished difference Result 814 states and 820 transitions. [2018-02-02 09:17:13,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-02-02 09:17:13,055 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 688 [2018-02-02 09:17:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:13,058 INFO L225 Difference]: With dead ends: 814 [2018-02-02 09:17:13,058 INFO L226 Difference]: Without dead ends: 814 [2018-02-02 09:17:13,059 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1263, Invalid=3567, Unknown=0, NotChecked=0, Total=4830 [2018-02-02 09:17:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2018-02-02 09:17:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 800. [2018-02-02 09:17:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-02-02 09:17:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 806 transitions. [2018-02-02 09:17:13,066 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 806 transitions. Word has length 688 [2018-02-02 09:17:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:13,066 INFO L432 AbstractCegarLoop]: Abstraction has 800 states and 806 transitions. [2018-02-02 09:17:13,066 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-02-02 09:17:13,067 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 806 transitions. [2018-02-02 09:17:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-02-02 09:17:13,072 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:13,073 INFO L351 BasicCegarLoop]: trace histogram [115, 103, 102, 102, 102, 102, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:13,073 INFO L371 AbstractCegarLoop]: === Iteration 38 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash 47189509, now seen corresponding path program 29 times [2018-02-02 09:17:13,073 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:13,073 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:13,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:13,074 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:13,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:13,111 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 34536 backedges. 14018 proven. 420 refuted. 0 times theorem prover too weak. 20098 trivial. 0 not checked. [2018-02-02 09:17:14,079 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:14,079 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:14,084 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:17:14,106 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,113 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,126 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,133 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,139 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,144 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,149 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,154 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,159 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,164 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,169 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,175 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,183 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,194 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,205 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,214 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,237 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,248 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,263 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,283 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,301 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,322 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,362 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:14,365 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:14,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 34536 backedges. 13824 proven. 2224 refuted. 0 times theorem prover too weak. 18488 trivial. 0 not checked. [2018-02-02 09:17:14,826 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:14,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 46 [2018-02-02 09:17:14,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-02-02 09:17:14,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-02-02 09:17:14,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2018-02-02 09:17:14,828 INFO L87 Difference]: Start difference. First operand 800 states and 806 transitions. Second operand 46 states. [2018-02-02 09:17:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:15,768 INFO L93 Difference]: Finished difference Result 818 states and 822 transitions. [2018-02-02 09:17:15,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-02-02 09:17:15,768 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 772 [2018-02-02 09:17:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:15,770 INFO L225 Difference]: With dead ends: 818 [2018-02-02 09:17:15,770 INFO L226 Difference]: Without dead ends: 812 [2018-02-02 09:17:15,771 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1183, Invalid=4219, Unknown=0, NotChecked=0, Total=5402 [2018-02-02 09:17:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2018-02-02 09:17:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 800. [2018-02-02 09:17:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-02-02 09:17:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 804 transitions. [2018-02-02 09:17:15,776 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 804 transitions. Word has length 772 [2018-02-02 09:17:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:15,777 INFO L432 AbstractCegarLoop]: Abstraction has 800 states and 804 transitions. [2018-02-02 09:17:15,777 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-02-02 09:17:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 804 transitions. [2018-02-02 09:17:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2018-02-02 09:17:15,781 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:15,781 INFO L351 BasicCegarLoop]: trace histogram [116, 104, 103, 103, 103, 103, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:15,782 INFO L371 AbstractCegarLoop]: === Iteration 39 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:15,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1773325315, now seen corresponding path program 30 times [2018-02-02 09:17:15,782 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:15,782 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:15,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:15,783 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:15,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:15,832 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 35175 backedges. 7626 proven. 507 refuted. 0 times theorem prover too weak. 27042 trivial. 0 not checked. [2018-02-02 09:17:16,495 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:16,495 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:16,499 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:17:16,521 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,524 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,527 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,531 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,542 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,552 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,563 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,571 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,599 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,614 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,627 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,656 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,715 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,735 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:16,796 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:16,802 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 35175 backedges. 7700 proven. 457 refuted. 0 times theorem prover too weak. 27018 trivial. 0 not checked. [2018-02-02 09:17:17,124 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:17,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2018-02-02 09:17:17,125 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-02-02 09:17:17,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-02-02 09:17:17,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2018-02-02 09:17:17,125 INFO L87 Difference]: Start difference. First operand 800 states and 804 transitions. Second operand 34 states. [2018-02-02 09:17:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:17,825 INFO L93 Difference]: Finished difference Result 922 states and 929 transitions. [2018-02-02 09:17:17,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-02-02 09:17:17,825 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 778 [2018-02-02 09:17:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:17,827 INFO L225 Difference]: With dead ends: 922 [2018-02-02 09:17:17,827 INFO L226 Difference]: Without dead ends: 922 [2018-02-02 09:17:17,828 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=812, Invalid=2970, Unknown=0, NotChecked=0, Total=3782 [2018-02-02 09:17:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2018-02-02 09:17:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 896. [2018-02-02 09:17:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2018-02-02 09:17:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 902 transitions. [2018-02-02 09:17:17,835 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 902 transitions. Word has length 778 [2018-02-02 09:17:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:17,835 INFO L432 AbstractCegarLoop]: Abstraction has 896 states and 902 transitions. [2018-02-02 09:17:17,836 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-02-02 09:17:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 902 transitions. [2018-02-02 09:17:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2018-02-02 09:17:17,840 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:17,840 INFO L351 BasicCegarLoop]: trace histogram [131, 118, 117, 117, 117, 117, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:17,840 INFO L371 AbstractCegarLoop]: === Iteration 40 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1027574676, now seen corresponding path program 31 times [2018-02-02 09:17:17,840 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:17,840 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:17,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:17,841 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:17,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:17,871 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 45136 backedges. 17456 proven. 494 refuted. 0 times theorem prover too weak. 27186 trivial. 0 not checked. [2018-02-02 09:17:19,087 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:19,087 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:19,091 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:19,210 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 45136 backedges. 17456 proven. 494 refuted. 0 times theorem prover too weak. 27186 trivial. 0 not checked. [2018-02-02 09:17:19,608 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:19,608 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 44 [2018-02-02 09:17:19,608 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-02-02 09:17:19,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-02-02 09:17:19,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2018-02-02 09:17:19,609 INFO L87 Difference]: Start difference. First operand 896 states and 902 transitions. Second operand 44 states. [2018-02-02 09:17:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:20,046 INFO L93 Difference]: Finished difference Result 924 states and 929 transitions. [2018-02-02 09:17:20,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-02-02 09:17:20,046 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 874 [2018-02-02 09:17:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:20,048 INFO L225 Difference]: With dead ends: 924 [2018-02-02 09:17:20,048 INFO L226 Difference]: Without dead ends: 918 [2018-02-02 09:17:20,049 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=721, Invalid=2359, Unknown=0, NotChecked=0, Total=3080 [2018-02-02 09:17:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2018-02-02 09:17:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 902. [2018-02-02 09:17:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2018-02-02 09:17:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 907 transitions. [2018-02-02 09:17:20,054 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 907 transitions. Word has length 874 [2018-02-02 09:17:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:20,055 INFO L432 AbstractCegarLoop]: Abstraction has 902 states and 907 transitions. [2018-02-02 09:17:20,055 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-02-02 09:17:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 907 transitions. [2018-02-02 09:17:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-02-02 09:17:20,059 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:20,060 INFO L351 BasicCegarLoop]: trace histogram [132, 119, 118, 118, 118, 118, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:20,060 INFO L371 AbstractCegarLoop]: === Iteration 41 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash -894009052, now seen corresponding path program 32 times [2018-02-02 09:17:20,060 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:20,060 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:20,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:20,060 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:20,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:20,097 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 45867 backedges. 9438 proven. 588 refuted. 0 times theorem prover too weak. 35841 trivial. 0 not checked. [2018-02-02 09:17:20,858 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:20,858 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:20,862 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:17:20,888 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:20,960 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:20,980 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:20,988 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 45867 backedges. 9438 proven. 588 refuted. 0 times theorem prover too weak. 35841 trivial. 0 not checked. [2018-02-02 09:17:21,276 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:21,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2018-02-02 09:17:21,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-02-02 09:17:21,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-02-02 09:17:21,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2018-02-02 09:17:21,277 INFO L87 Difference]: Start difference. First operand 902 states and 907 transitions. Second operand 32 states. [2018-02-02 09:17:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:21,726 INFO L93 Difference]: Finished difference Result 936 states and 943 transitions. [2018-02-02 09:17:21,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 09:17:21,727 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 880 [2018-02-02 09:17:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:21,729 INFO L225 Difference]: With dead ends: 936 [2018-02-02 09:17:21,729 INFO L226 Difference]: Without dead ends: 936 [2018-02-02 09:17:21,729 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 865 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2018-02-02 09:17:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2018-02-02 09:17:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 908. [2018-02-02 09:17:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2018-02-02 09:17:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 914 transitions. [2018-02-02 09:17:21,735 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 914 transitions. Word has length 880 [2018-02-02 09:17:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:21,735 INFO L432 AbstractCegarLoop]: Abstraction has 908 states and 914 transitions. [2018-02-02 09:17:21,735 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-02-02 09:17:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 914 transitions. [2018-02-02 09:17:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2018-02-02 09:17:21,739 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:21,739 INFO L351 BasicCegarLoop]: trace histogram [133, 120, 119, 119, 119, 119, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:21,739 INFO L371 AbstractCegarLoop]: === Iteration 42 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:21,740 INFO L82 PathProgramCache]: Analyzing trace with hash 741635228, now seen corresponding path program 33 times [2018-02-02 09:17:21,740 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:21,740 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:21,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:21,740 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:21,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:21,772 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 46604 backedges. 10732 proven. 564 refuted. 0 times theorem prover too weak. 35308 trivial. 0 not checked. [2018-02-02 09:17:23,082 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:23,082 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:23,087 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:17:23,112 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,122 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,124 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,128 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,133 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,139 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,145 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,156 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,163 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,173 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,188 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,201 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,216 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,233 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,251 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,270 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:17:23,272 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:23,279 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 46604 backedges. 13265 proven. 4191 refuted. 0 times theorem prover too weak. 29148 trivial. 0 not checked. [2018-02-02 09:17:23,758 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:23,758 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 24] total 50 [2018-02-02 09:17:23,758 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-02-02 09:17:23,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-02-02 09:17:23,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2069, Unknown=0, NotChecked=0, Total=2450 [2018-02-02 09:17:23,759 INFO L87 Difference]: Start difference. First operand 908 states and 914 transitions. Second operand 50 states. [2018-02-02 09:17:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:24,840 INFO L93 Difference]: Finished difference Result 1027 states and 1034 transitions. [2018-02-02 09:17:24,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-02-02 09:17:24,840 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 886 [2018-02-02 09:17:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:24,842 INFO L225 Difference]: With dead ends: 1027 [2018-02-02 09:17:24,842 INFO L226 Difference]: Without dead ends: 1027 [2018-02-02 09:17:24,842 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1620, Invalid=6390, Unknown=0, NotChecked=0, Total=8010 [2018-02-02 09:17:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2018-02-02 09:17:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1016. [2018-02-02 09:17:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-02-02 09:17:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1023 transitions. [2018-02-02 09:17:24,848 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1023 transitions. Word has length 886 [2018-02-02 09:17:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:24,849 INFO L432 AbstractCegarLoop]: Abstraction has 1016 states and 1023 transitions. [2018-02-02 09:17:24,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-02-02 09:17:24,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1023 transitions. [2018-02-02 09:17:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2018-02-02 09:17:24,854 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:24,854 INFO L351 BasicCegarLoop]: trace histogram [148, 134, 133, 133, 133, 133, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:24,854 INFO L371 AbstractCegarLoop]: === Iteration 43 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:24,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1908977205, now seen corresponding path program 34 times [2018-02-02 09:17:24,854 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:24,854 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:24,855 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:24,855 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:24,855 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:24,888 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 57981 backedges. 21411 proven. 574 refuted. 0 times theorem prover too weak. 35996 trivial. 0 not checked. [2018-02-02 09:17:26,376 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:26,522 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:26,528 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:17:26,641 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:26,648 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 57981 backedges. 21411 proven. 574 refuted. 0 times theorem prover too weak. 35996 trivial. 0 not checked. [2018-02-02 09:17:27,107 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:27,107 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 47 [2018-02-02 09:17:27,107 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-02-02 09:17:27,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-02-02 09:17:27,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2018-02-02 09:17:27,108 INFO L87 Difference]: Start difference. First operand 1016 states and 1023 transitions. Second operand 47 states. [2018-02-02 09:17:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:27,540 INFO L93 Difference]: Finished difference Result 1037 states and 1042 transitions. [2018-02-02 09:17:27,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-02-02 09:17:27,541 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 982 [2018-02-02 09:17:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:27,542 INFO L225 Difference]: With dead ends: 1037 [2018-02-02 09:17:27,542 INFO L226 Difference]: Without dead ends: 1031 [2018-02-02 09:17:27,543 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=825, Invalid=2715, Unknown=0, NotChecked=0, Total=3540 [2018-02-02 09:17:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2018-02-02 09:17:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1016. [2018-02-02 09:17:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-02-02 09:17:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1021 transitions. [2018-02-02 09:17:27,548 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1021 transitions. Word has length 982 [2018-02-02 09:17:27,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:27,548 INFO L432 AbstractCegarLoop]: Abstraction has 1016 states and 1021 transitions. [2018-02-02 09:17:27,548 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-02-02 09:17:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1021 transitions. [2018-02-02 09:17:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-02-02 09:17:27,553 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:27,553 INFO L351 BasicCegarLoop]: trace histogram [149, 135, 134, 134, 134, 134, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:27,553 INFO L371 AbstractCegarLoop]: === Iteration 44 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1435708227, now seen corresponding path program 35 times [2018-02-02 09:17:27,554 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:27,554 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:27,554 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:27,554 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:27,554 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:27,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 58810 backedges. 11515 proven. 675 refuted. 0 times theorem prover too weak. 46620 trivial. 0 not checked. [2018-02-02 09:17:28,537 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:28,537 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:28,542 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:17:28,572 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,578 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,584 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,617 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,627 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,637 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,657 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,667 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,678 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,700 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,716 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,730 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,745 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,760 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,817 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,840 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,866 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:28,963 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:29,005 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:29,045 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:29,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:29,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:29,118 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:29,130 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 58810 backedges. 11515 proven. 675 refuted. 0 times theorem prover too weak. 46620 trivial. 0 not checked. [2018-02-02 09:17:29,502 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:29,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2018-02-02 09:17:29,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-02-02 09:17:29,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-02-02 09:17:29,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-02-02 09:17:29,504 INFO L87 Difference]: Start difference. First operand 1016 states and 1021 transitions. Second operand 34 states. [2018-02-02 09:17:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:30,010 INFO L93 Difference]: Finished difference Result 1040 states and 1046 transitions. [2018-02-02 09:17:30,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 09:17:30,011 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 988 [2018-02-02 09:17:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:30,013 INFO L225 Difference]: With dead ends: 1040 [2018-02-02 09:17:30,013 INFO L226 Difference]: Without dead ends: 1040 [2018-02-02 09:17:30,013 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 973 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=507, Invalid=1749, Unknown=0, NotChecked=0, Total=2256 [2018-02-02 09:17:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2018-02-02 09:17:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1022. [2018-02-02 09:17:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2018-02-02 09:17:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1028 transitions. [2018-02-02 09:17:30,019 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1028 transitions. Word has length 988 [2018-02-02 09:17:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:30,019 INFO L432 AbstractCegarLoop]: Abstraction has 1022 states and 1028 transitions. [2018-02-02 09:17:30,019 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-02-02 09:17:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1028 transitions. [2018-02-02 09:17:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2018-02-02 09:17:30,024 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:30,024 INFO L351 BasicCegarLoop]: trace histogram [150, 136, 135, 135, 135, 135, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:30,024 INFO L371 AbstractCegarLoop]: === Iteration 45 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1833618299, now seen corresponding path program 36 times [2018-02-02 09:17:30,025 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:30,025 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:30,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:30,025 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:30,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:30,063 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 59645 backedges. 12992 proven. 649 refuted. 0 times theorem prover too weak. 46004 trivial. 0 not checked. [2018-02-02 09:17:31,769 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:31,769 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:17:31,774 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:17:31,800 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,805 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,810 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,816 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,821 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,829 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,837 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,904 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,921 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,936 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,953 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,976 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:31,999 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,016 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,041 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,064 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,091 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,113 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,146 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,167 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:17:32,170 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:32,179 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 59645 backedges. 12348 proven. 618 refuted. 0 times theorem prover too weak. 46679 trivial. 0 not checked. [2018-02-02 09:17:32,507 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:32,508 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 21] total 40 [2018-02-02 09:17:32,508 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-02-02 09:17:32,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-02-02 09:17:32,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 09:17:32,508 INFO L87 Difference]: Start difference. First operand 1022 states and 1028 transitions. Second operand 40 states. [2018-02-02 09:17:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:33,171 INFO L93 Difference]: Finished difference Result 1132 states and 1139 transitions. [2018-02-02 09:17:33,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-02-02 09:17:33,171 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 994 [2018-02-02 09:17:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:33,174 INFO L225 Difference]: With dead ends: 1132 [2018-02-02 09:17:33,174 INFO L226 Difference]: Without dead ends: 1132 [2018-02-02 09:17:33,174 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 991 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1209, Invalid=3903, Unknown=0, NotChecked=0, Total=5112 [2018-02-02 09:17:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2018-02-02 09:17:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1130. [2018-02-02 09:17:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2018-02-02 09:17:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1137 transitions. [2018-02-02 09:17:33,182 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1137 transitions. Word has length 994 [2018-02-02 09:17:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:33,183 INFO L432 AbstractCegarLoop]: Abstraction has 1130 states and 1137 transitions. [2018-02-02 09:17:33,183 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-02-02 09:17:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1137 transitions. [2018-02-02 09:17:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2018-02-02 09:17:33,190 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:33,190 INFO L351 BasicCegarLoop]: trace histogram [166, 151, 150, 150, 150, 150, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:33,190 INFO L371 AbstractCegarLoop]: === Iteration 46 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash 305834914, now seen corresponding path program 37 times [2018-02-02 09:17:33,190 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:33,190 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:33,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:33,191 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:17:33,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:33,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-02-02 09:17:34,152 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-02 09:17:34,155 INFO L168 Benchmark]: Toolchain (without parser) took 50278.52 ms. Allocated memory was 402.7 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 359.3 MB in the beginning and 2.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. [2018-02-02 09:17:34,156 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 402.7 MB. Free memory is still 364.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:17:34,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.89 ms. Allocated memory is still 402.7 MB. Free memory was 359.3 MB in the beginning and 351.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:34,156 INFO L168 Benchmark]: Boogie Preprocessor took 29.60 ms. Allocated memory is still 402.7 MB. Free memory was 351.4 MB in the beginning and 348.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:34,156 INFO L168 Benchmark]: RCFGBuilder took 220.34 ms. Allocated memory is still 402.7 MB. Free memory was 348.8 MB in the beginning and 331.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:34,156 INFO L168 Benchmark]: TraceAbstraction took 49893.55 ms. Allocated memory was 402.7 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 331.6 MB in the beginning and 2.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-02-02 09:17:34,157 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 402.7 MB. Free memory is still 364.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 131.89 ms. Allocated memory is still 402.7 MB. Free memory was 359.3 MB in the beginning and 351.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.60 ms. Allocated memory is still 402.7 MB. Free memory was 351.4 MB in the beginning and 348.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 220.34 ms. Allocated memory is still 402.7 MB. Free memory was 348.8 MB in the beginning and 331.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 49893.55 ms. Allocated memory was 402.7 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 331.6 MB in the beginning and 2.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-17-34-166.csv Completed graceful shutdown