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/memsafety/960521-1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:50:56,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:50:56,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:50:56,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:50:56,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:50:56,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:50:56,144 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:50:56,146 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:50:56,147 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:50:56,148 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:50:56,148 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:50:56,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:50:56,149 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:50:56,150 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:50:56,151 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:50:56,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:50:56,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:50:56,155 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:50:56,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:50:56,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:50:56,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 08:50:56,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 08:50:56,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 08:50:56,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 08:50:56,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 08:50:56,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 08:50:56,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 08:50:56,162 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 08:50:56,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 08:50:56,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 08:50:56,163 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 08:50:56,163 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 08:50:56,173 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:50:56,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:50:56,174 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:50:56,174 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:50:56,174 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:50:56,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:50:56,175 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:50:56,176 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:50:56,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:50:56,176 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:50:56,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:50:56,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:50:56,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:50:56,176 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:50:56,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:50:56,177 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:50:56,177 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:50:56,177 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:50:56,177 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:50:56,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:50:56,213 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:50:56,215 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:50:56,216 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:50:56,216 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:50:56,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i [2018-02-02 08:50:56,358 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:50:56,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:50:56,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:50:56,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:50:56,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:50:56,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7404f6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56, skipping insertion in model container [2018-02-02 08:50:56,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,376 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:50:56,402 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:50:56,484 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:50:56,497 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:50:56,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56 WrapperNode [2018-02-02 08:50:56,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:50:56,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:50:56,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:50:56,502 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:50:56,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (1/1) ... [2018-02-02 08:50:56,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:50:56,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:50:56,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:50:56,523 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:50:56,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (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 08:50:56,556 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:50:56,556 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:50:56,556 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 08:50:56,556 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:50:56,556 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:50:56,556 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:50:56,556 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:50:56,556 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:50:56,557 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:50:56,710 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:50:56,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:50:56 BoogieIcfgContainer [2018-02-02 08:50:56,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:50:56,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:50:56,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:50:56,712 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:50:56,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:50:56" (1/3) ... [2018-02-02 08:50:56,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4571e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:50:56, skipping insertion in model container [2018-02-02 08:50:56,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:50:56" (2/3) ... [2018-02-02 08:50:56,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4571e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:50:56, skipping insertion in model container [2018-02-02 08:50:56,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:50:56" (3/3) ... [2018-02-02 08:50:56,714 INFO L107 eAbstractionObserver]: Analyzing ICFG 960521-1_false-valid-free.i [2018-02-02 08:50:56,719 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:50:56,722 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-02-02 08:50:56,752 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:50:56,752 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:50:56,752 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:50:56,752 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:50:56,752 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:50:56,752 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:50:56,753 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:50:56,753 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:50:56,753 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:50:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-02-02 08:50:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 08:50:56,772 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:56,773 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:50:56,773 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1993989713, now seen corresponding path program 1 times [2018-02-02 08:50:56,779 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:56,779 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:56,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:56,824 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:56,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:56,876 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:56,963 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 08:50:56,965 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:50:56,965 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:50:56,966 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:50:56,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:50:56,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:50:56,976 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2018-02-02 08:50:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:57,087 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2018-02-02 08:50:57,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:50:57,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-02-02 08:50:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:57,146 INFO L225 Difference]: With dead ends: 52 [2018-02-02 08:50:57,146 INFO L226 Difference]: Without dead ends: 49 [2018-02-02 08:50:57,148 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:50:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-02-02 08:50:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-02-02 08:50:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 08:50:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-02-02 08:50:57,187 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 11 [2018-02-02 08:50:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:57,188 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-02-02 08:50:57,188 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:50:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-02-02 08:50:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 08:50:57,188 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:57,188 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:50:57,189 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:57,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1993989714, now seen corresponding path program 1 times [2018-02-02 08:50:57,189 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:57,189 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:57,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,190 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:57,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:57,206 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:57,271 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 08:50:57,271 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:50:57,271 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:50:57,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:50:57,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:50:57,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:50:57,272 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 5 states. [2018-02-02 08:50:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:57,323 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2018-02-02 08:50:57,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:50:57,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-02-02 08:50:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:57,324 INFO L225 Difference]: With dead ends: 48 [2018-02-02 08:50:57,324 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 08:50:57,325 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:50:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 08:50:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-02-02 08:50:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-02-02 08:50:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-02-02 08:50:57,329 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 11 [2018-02-02 08:50:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:57,329 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-02-02 08:50:57,329 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:50:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-02-02 08:50:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 08:50:57,330 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:57,330 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 08:50:57,330 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1188525484, now seen corresponding path program 1 times [2018-02-02 08:50:57,331 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:57,331 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:57,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,332 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:57,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:57,349 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:57,417 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 08:50:57,417 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:50:57,417 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:50:57,417 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:50:57,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:50:57,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:50:57,418 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-02-02 08:50:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:57,477 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-02-02 08:50:57,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:50:57,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-02-02 08:50:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:57,478 INFO L225 Difference]: With dead ends: 45 [2018-02-02 08:50:57,478 INFO L226 Difference]: Without dead ends: 45 [2018-02-02 08:50:57,479 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:50:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-02 08:50:57,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-02-02 08:50:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-02-02 08:50:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-02-02 08:50:57,482 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 17 [2018-02-02 08:50:57,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:57,483 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-02-02 08:50:57,483 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:50:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-02-02 08:50:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 08:50:57,483 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:57,483 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 08:50:57,483 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:57,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1188525483, now seen corresponding path program 1 times [2018-02-02 08:50:57,484 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:57,484 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:57,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,485 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:57,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:57,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:57,605 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 08:50:57,605 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:50:57,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 08:50:57,605 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 08:50:57,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 08:50:57,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:50:57,606 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 7 states. [2018-02-02 08:50:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:57,696 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-02-02 08:50:57,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 08:50:57,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-02-02 08:50:57,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:57,697 INFO L225 Difference]: With dead ends: 53 [2018-02-02 08:50:57,697 INFO L226 Difference]: Without dead ends: 53 [2018-02-02 08:50:57,697 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:50:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-02-02 08:50:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-02-02 08:50:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-02-02 08:50:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-02-02 08:50:57,702 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 17 [2018-02-02 08:50:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:57,702 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-02-02 08:50:57,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 08:50:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-02-02 08:50:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 08:50:57,703 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:57,703 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:50:57,703 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:57,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2106816852, now seen corresponding path program 1 times [2018-02-02 08:50:57,704 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:57,704 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:57,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:57,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:57,717 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:57,822 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 08:50:57,822 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:50:57,822 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 08:50:57,832 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:57,859 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:50:57,886 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 08:50:57,888 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:57,891 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:50:57,891 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-02-02 08:50:57,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-02-02 08:50:57,902 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:57,918 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:50:57,918 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:21 [2018-02-02 08:50:58,008 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 08:50:58,029 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:50:58,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-02-02 08:50:58,029 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 08:50:58,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 08:50:58,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:50:58,030 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 12 states. [2018-02-02 08:50:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:58,228 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-02-02 08:50:58,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:50:58,231 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-02-02 08:50:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:58,232 INFO L225 Difference]: With dead ends: 63 [2018-02-02 08:50:58,232 INFO L226 Difference]: Without dead ends: 63 [2018-02-02 08:50:58,232 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:50:58,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-02-02 08:50:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2018-02-02 08:50:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 08:50:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-02-02 08:50:58,236 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 21 [2018-02-02 08:50:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:58,236 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-02-02 08:50:58,237 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 08:50:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-02-02 08:50:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 08:50:58,237 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:58,237 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:50:58,237 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:58,238 INFO L82 PathProgramCache]: Analyzing trace with hash -702775421, now seen corresponding path program 2 times [2018-02-02 08:50:58,238 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:58,238 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:58,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:58,239 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:50:58,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:58,251 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:50:58,413 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:50:58,413 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 08:50:58,420 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:50:58,436 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:50:58,441 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:50:58,442 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:50:58,445 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:50:58,450 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 08:50:58,450 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:58,460 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 08:50:58,460 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:58,466 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:50:58,467 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:19 [2018-02-02 08:50:58,503 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:50:58,504 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:50:58,506 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 08:50:58,506 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:58,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-02-02 08:50:58,514 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:58,523 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:50:58,523 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2018-02-02 08:50:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:50:58,654 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:50:58,654 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-02-02 08:50:58,654 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-02-02 08:50:58,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-02-02 08:50:58,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-02-02 08:50:58,655 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 17 states. [2018-02-02 08:50:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:59,074 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2018-02-02 08:50:59,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 08:50:59,075 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2018-02-02 08:50:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:59,075 INFO L225 Difference]: With dead ends: 73 [2018-02-02 08:50:59,075 INFO L226 Difference]: Without dead ends: 73 [2018-02-02 08:50:59,076 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-02-02 08:50:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-02-02 08:50:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2018-02-02 08:50:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-02 08:50:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-02-02 08:50:59,078 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 25 [2018-02-02 08:50:59,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:59,078 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-02-02 08:50:59,078 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-02-02 08:50:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-02-02 08:50:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 08:50:59,079 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:59,079 INFO L351 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:50:59,079 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:59,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1827026138, now seen corresponding path program 3 times [2018-02-02 08:50:59,080 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:59,080 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:59,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:59,080 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:50:59,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:59,092 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:50:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:50:59,225 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:50:59,225 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 08:50:59,230 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 08:50:59,248 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:50:59,253 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:50:59,253 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:50:59,256 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:50:59,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 08:50:59,259 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:59,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 08:50:59,265 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:59,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:50:59,269 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:16 [2018-02-02 08:50:59,308 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:50:59,309 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-02-02 08:50:59,310 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:59,320 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:50:59,321 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:50:59,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 08:50:59,322 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:50:59,327 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:50:59,327 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2018-02-02 08:50:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-02-02 08:50:59,467 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:50:59,467 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2018-02-02 08:50:59,467 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-02 08:50:59,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-02 08:50:59,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2018-02-02 08:50:59,468 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 18 states. [2018-02-02 08:50:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:50:59,957 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-02-02 08:50:59,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 08:50:59,958 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2018-02-02 08:50:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:50:59,961 INFO L225 Difference]: With dead ends: 90 [2018-02-02 08:50:59,961 INFO L226 Difference]: Without dead ends: 90 [2018-02-02 08:50:59,961 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-02-02 08:50:59,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-02-02 08:50:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2018-02-02 08:50:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-02-02 08:50:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-02-02 08:50:59,965 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 29 [2018-02-02 08:50:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:50:59,966 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-02-02 08:50:59,966 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-02 08:50:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-02-02 08:50:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-02-02 08:50:59,967 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:50:59,967 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:50:59,967 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:50:59,967 INFO L82 PathProgramCache]: Analyzing trace with hash -645884181, now seen corresponding path program 1 times [2018-02-02 08:50:59,967 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:50:59,967 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:50:59,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:59,968 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:50:59,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:50:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:50:59,978 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:51:00,044 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:00,044 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 08:51:00,052 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:00,074 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:51:00,154 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:00,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-02-02 08:51:00,154 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 08:51:00,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 08:51:00,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:51:00,155 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 15 states. [2018-02-02 08:51:00,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:00,229 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-02-02 08:51:00,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:51:00,229 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-02-02 08:51:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:00,230 INFO L225 Difference]: With dead ends: 102 [2018-02-02 08:51:00,230 INFO L226 Difference]: Without dead ends: 102 [2018-02-02 08:51:00,230 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:51:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-02-02 08:51:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2018-02-02 08:51:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-02-02 08:51:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2018-02-02 08:51:00,233 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 40 [2018-02-02 08:51:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:00,233 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2018-02-02 08:51:00,233 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 08:51:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2018-02-02 08:51:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-02-02 08:51:00,234 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:00,234 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:00,234 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2113361740, now seen corresponding path program 2 times [2018-02-02 08:51:00,234 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:00,234 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:00,235 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:00,235 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:00,235 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:00,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:51:00,297 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:00,297 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 08:51:00,303 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:51:00,318 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:00,319 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:00,321 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:00,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 08:51:00,332 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:51:00,351 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:51:00,351 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-02-02 08:51:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-02-02 08:51:00,478 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 08:51:00,478 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-02-02 08:51:00,478 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 08:51:00,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 08:51:00,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:51:00,479 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 15 states. [2018-02-02 08:51:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:01,006 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-02-02 08:51:01,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-02 08:51:01,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-02-02 08:51:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:01,007 INFO L225 Difference]: With dead ends: 102 [2018-02-02 08:51:01,007 INFO L226 Difference]: Without dead ends: 102 [2018-02-02 08:51:01,008 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2018-02-02 08:51:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-02-02 08:51:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 85. [2018-02-02 08:51:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-02-02 08:51:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2018-02-02 08:51:01,012 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 44 [2018-02-02 08:51:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:01,013 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2018-02-02 08:51:01,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 08:51:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2018-02-02 08:51:01,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-02-02 08:51:01,013 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:01,014 INFO L351 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:01,014 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1590645252, now seen corresponding path program 1 times [2018-02-02 08:51:01,014 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:01,014 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:01,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,015 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:01,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:01,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-02-02 08:51:01,050 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:51:01,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:51:01,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:51:01,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:51:01,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:51:01,051 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 4 states. [2018-02-02 08:51:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:01,081 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2018-02-02 08:51:01,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:51:01,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-02-02 08:51:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:01,083 INFO L225 Difference]: With dead ends: 83 [2018-02-02 08:51:01,083 INFO L226 Difference]: Without dead ends: 83 [2018-02-02 08:51:01,083 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:51:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-02-02 08:51:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-02-02 08:51:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-02-02 08:51:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-02-02 08:51:01,087 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 48 [2018-02-02 08:51:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:01,087 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-02-02 08:51:01,087 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:51:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-02-02 08:51:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-02-02 08:51:01,089 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:01,089 INFO L351 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:01,089 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash 221692531, now seen corresponding path program 1 times [2018-02-02 08:51:01,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:01,089 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:01,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,090 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:01,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:01,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-02-02 08:51:01,196 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:01,196 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 08:51:01,201 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:01,223 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-02-02 08:51:01,286 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:01,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-02-02 08:51:01,287 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-02-02 08:51:01,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-02-02 08:51:01,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2018-02-02 08:51:01,287 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 20 states. [2018-02-02 08:51:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:01,372 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2018-02-02 08:51:01,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 08:51:01,372 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2018-02-02 08:51:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:01,373 INFO L225 Difference]: With dead ends: 99 [2018-02-02 08:51:01,373 INFO L226 Difference]: Without dead ends: 99 [2018-02-02 08:51:01,373 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2018-02-02 08:51:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-02-02 08:51:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-02-02 08:51:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-02-02 08:51:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-02-02 08:51:01,377 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 77 [2018-02-02 08:51:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:01,377 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-02-02 08:51:01,377 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-02-02 08:51:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-02-02 08:51:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-02-02 08:51:01,378 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:01,378 INFO L351 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:01,378 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:01,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2016762916, now seen corresponding path program 2 times [2018-02-02 08:51:01,378 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:01,378 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:01,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,379 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:01,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:01,393 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-02-02 08:51:01,487 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:01,487 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 08:51:01,492 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:51:01,512 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:01,528 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:01,530 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:01,534 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-02-02 08:51:01,655 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:01,655 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-02-02 08:51:01,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 08:51:01,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 08:51:01,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2018-02-02 08:51:01,657 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 22 states. [2018-02-02 08:51:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:01,732 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2018-02-02 08:51:01,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-02 08:51:01,733 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 89 [2018-02-02 08:51:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:01,733 INFO L225 Difference]: With dead ends: 107 [2018-02-02 08:51:01,733 INFO L226 Difference]: Without dead ends: 107 [2018-02-02 08:51:01,733 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=319, Unknown=0, NotChecked=0, Total=506 [2018-02-02 08:51:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-02-02 08:51:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-02-02 08:51:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-02-02 08:51:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-02-02 08:51:01,736 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 89 [2018-02-02 08:51:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:01,736 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-02-02 08:51:01,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 08:51:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-02-02 08:51:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-02-02 08:51:01,739 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:01,739 INFO L351 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:01,739 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:01,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1885341628, now seen corresponding path program 3 times [2018-02-02 08:51:01,739 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:01,739 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:01,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,740 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:01,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:01,753 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-02-02 08:51:01,853 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:01,854 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 08:51:01,858 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 08:51:01,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,871 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,876 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,880 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,884 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,901 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,917 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,943 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,961 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:01,962 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:01,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 34 proven. 162 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-02-02 08:51:02,161 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:02,161 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2018-02-02 08:51:02,161 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-02-02 08:51:02,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-02-02 08:51:02,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2018-02-02 08:51:02,161 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 28 states. [2018-02-02 08:51:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:02,391 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2018-02-02 08:51:02,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 08:51:02,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 97 [2018-02-02 08:51:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:02,393 INFO L225 Difference]: With dead ends: 121 [2018-02-02 08:51:02,393 INFO L226 Difference]: Without dead ends: 121 [2018-02-02 08:51:02,394 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=541, Unknown=0, NotChecked=0, Total=812 [2018-02-02 08:51:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-02-02 08:51:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2018-02-02 08:51:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-02-02 08:51:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-02-02 08:51:02,398 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 97 [2018-02-02 08:51:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:02,398 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-02-02 08:51:02,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-02-02 08:51:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-02-02 08:51:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-02-02 08:51:02,399 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:02,399 INFO L351 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:02,399 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash -182148109, now seen corresponding path program 4 times [2018-02-02 08:51:02,400 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:02,400 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:02,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:02,401 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:02,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:02,416 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-02-02 08:51:02,639 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:02,639 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 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 08:51:02,646 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 08:51:02,815 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:02,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-02-02 08:51:02,920 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:02,921 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2018-02-02 08:51:02,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-02-02 08:51:02,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-02-02 08:51:02,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=482, Unknown=0, NotChecked=0, Total=756 [2018-02-02 08:51:02,921 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 28 states. [2018-02-02 08:51:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:03,026 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2018-02-02 08:51:03,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-02 08:51:03,027 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2018-02-02 08:51:03,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:03,028 INFO L225 Difference]: With dead ends: 131 [2018-02-02 08:51:03,028 INFO L226 Difference]: Without dead ends: 131 [2018-02-02 08:51:03,028 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=301, Invalid=511, Unknown=0, NotChecked=0, Total=812 [2018-02-02 08:51:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-02-02 08:51:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-02-02 08:51:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-02-02 08:51:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-02-02 08:51:03,032 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 109 [2018-02-02 08:51:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:03,032 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-02-02 08:51:03,032 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-02-02 08:51:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-02-02 08:51:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-02-02 08:51:03,033 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:03,034 INFO L351 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:03,034 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1012012708, now seen corresponding path program 5 times [2018-02-02 08:51:03,034 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:03,034 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:03,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:03,035 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:03,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:03,046 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 08:51:03,184 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:03,184 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 08:51:03,205 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 08:51:03,213 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,215 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,218 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,221 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,240 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,248 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,259 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,343 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,390 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,539 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:03,547 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:03,551 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 08:51:03,592 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:03,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 18 [2018-02-02 08:51:03,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-02 08:51:03,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-02 08:51:03,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2018-02-02 08:51:03,593 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 18 states. [2018-02-02 08:51:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:03,764 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2018-02-02 08:51:03,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 08:51:03,764 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 121 [2018-02-02 08:51:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:03,764 INFO L225 Difference]: With dead ends: 139 [2018-02-02 08:51:03,765 INFO L226 Difference]: Without dead ends: 139 [2018-02-02 08:51:03,765 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2018-02-02 08:51:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-02-02 08:51:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-02-02 08:51:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-02-02 08:51:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-02-02 08:51:03,767 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 121 [2018-02-02 08:51:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:03,767 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-02-02 08:51:03,767 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-02 08:51:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-02-02 08:51:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-02-02 08:51:03,768 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:03,768 INFO L351 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:03,768 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash 70218044, now seen corresponding path program 6 times [2018-02-02 08:51:03,768 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:03,768 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:03,769 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:03,769 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:03,769 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:03,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-02-02 08:51:03,921 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:03,921 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 08:51:03,927 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 08:51:03,943 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:03,947 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:03,950 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:03,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:03,960 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:03,974 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:04,011 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:04,083 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:04,125 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:04,269 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:04,394 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:04,815 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:05,010 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:05,187 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:05,188 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:05,193 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 50 proven. 338 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 08:51:05,363 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:05,363 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 36 [2018-02-02 08:51:05,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-02-02 08:51:05,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-02-02 08:51:05,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=841, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 08:51:05,364 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 36 states. [2018-02-02 08:51:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:05,476 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2018-02-02 08:51:05,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-02-02 08:51:05,476 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 129 [2018-02-02 08:51:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:05,477 INFO L225 Difference]: With dead ends: 153 [2018-02-02 08:51:05,477 INFO L226 Difference]: Without dead ends: 153 [2018-02-02 08:51:05,477 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=453, Invalid=879, Unknown=0, NotChecked=0, Total=1332 [2018-02-02 08:51:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-02-02 08:51:05,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2018-02-02 08:51:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-02-02 08:51:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-02-02 08:51:05,479 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 129 [2018-02-02 08:51:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:05,479 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-02-02 08:51:05,479 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-02-02 08:51:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-02-02 08:51:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-02-02 08:51:05,480 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:05,480 INFO L351 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:05,480 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:05,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1876890995, now seen corresponding path program 7 times [2018-02-02 08:51:05,480 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:05,480 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:05,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:05,481 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:05,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:05,491 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-02-02 08:51:05,620 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:05,620 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 08:51:05,624 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:05,650 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-02-02 08:51:05,787 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:05,787 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 36 [2018-02-02 08:51:05,787 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-02-02 08:51:05,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-02-02 08:51:05,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=800, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 08:51:05,788 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 36 states. [2018-02-02 08:51:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:05,908 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2018-02-02 08:51:05,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-02 08:51:05,908 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 141 [2018-02-02 08:51:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:05,909 INFO L225 Difference]: With dead ends: 163 [2018-02-02 08:51:05,909 INFO L226 Difference]: Without dead ends: 163 [2018-02-02 08:51:05,909 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=495, Invalid=837, Unknown=0, NotChecked=0, Total=1332 [2018-02-02 08:51:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-02-02 08:51:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-02-02 08:51:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-02-02 08:51:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-02-02 08:51:05,911 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 141 [2018-02-02 08:51:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:05,911 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-02-02 08:51:05,911 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-02-02 08:51:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-02-02 08:51:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-02-02 08:51:05,912 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:05,912 INFO L351 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:05,912 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:05,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1883094748, now seen corresponding path program 8 times [2018-02-02 08:51:05,912 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:05,912 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:05,913 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:05,913 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:05,913 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:05,923 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-02-02 08:51:06,119 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:06,119 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 08:51:06,123 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:51:06,135 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:06,148 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:06,150 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:06,152 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-02-02 08:51:06,290 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:06,290 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2018-02-02 08:51:06,290 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-02-02 08:51:06,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-02-02 08:51:06,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=892, Unknown=0, NotChecked=0, Total=1406 [2018-02-02 08:51:06,291 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 38 states. [2018-02-02 08:51:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:06,422 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2018-02-02 08:51:06,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-02-02 08:51:06,422 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 153 [2018-02-02 08:51:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:06,423 INFO L225 Difference]: With dead ends: 171 [2018-02-02 08:51:06,423 INFO L226 Difference]: Without dead ends: 171 [2018-02-02 08:51:06,423 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=551, Invalid=931, Unknown=0, NotChecked=0, Total=1482 [2018-02-02 08:51:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-02-02 08:51:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-02-02 08:51:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-02-02 08:51:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-02-02 08:51:06,425 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 153 [2018-02-02 08:51:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:06,425 INFO L432 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-02-02 08:51:06,426 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-02-02 08:51:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-02-02 08:51:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-02-02 08:51:06,427 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:06,427 INFO L351 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:06,427 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash 995322556, now seen corresponding path program 9 times [2018-02-02 08:51:06,427 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:06,427 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:06,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:06,428 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:06,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:06,439 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-02-02 08:51:06,641 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:06,641 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 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 08:51:06,645 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 08:51:06,659 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,662 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,665 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,667 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,672 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,678 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,686 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,701 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,730 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,740 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,756 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,789 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:06,967 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:07,002 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:07,468 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:07,522 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:08,262 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:08,264 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:08,268 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-02-02 08:51:08,521 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:08,521 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 40 [2018-02-02 08:51:08,521 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-02-02 08:51:08,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-02-02 08:51:08,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=989, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 08:51:08,522 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 40 states. [2018-02-02 08:51:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:08,666 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2018-02-02 08:51:08,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-02 08:51:08,666 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 161 [2018-02-02 08:51:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:08,667 INFO L225 Difference]: With dead ends: 179 [2018-02-02 08:51:08,667 INFO L226 Difference]: Without dead ends: 179 [2018-02-02 08:51:08,668 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2018-02-02 08:51:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-02-02 08:51:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-02-02 08:51:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-02-02 08:51:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-02-02 08:51:08,671 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 161 [2018-02-02 08:51:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:08,671 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-02-02 08:51:08,671 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-02-02 08:51:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-02-02 08:51:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-02-02 08:51:08,672 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:08,672 INFO L351 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:08,672 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1259888540, now seen corresponding path program 10 times [2018-02-02 08:51:08,673 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:08,673 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:08,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:08,673 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:08,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:08,692 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-02-02 08:51:08,924 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:08,925 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 08:51:08,929 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 08:51:08,964 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:08,966 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:08,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 08:51:08,970 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:51:08,971 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:51:08,971 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-02-02 08:51:09,663 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-02-02 08:51:09,663 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:51:09,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-02-02 08:51:09,668 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-02-02 08:51:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 595 proven. 701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:51:09,831 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:09,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 44] total 65 [2018-02-02 08:51:09,832 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-02-02 08:51:09,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-02-02 08:51:09,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=890, Invalid=3270, Unknown=0, NotChecked=0, Total=4160 [2018-02-02 08:51:09,834 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 65 states. [2018-02-02 08:51:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:10,521 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2018-02-02 08:51:10,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-02 08:51:10,521 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 169 [2018-02-02 08:51:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:10,522 INFO L225 Difference]: With dead ends: 187 [2018-02-02 08:51:10,522 INFO L226 Difference]: Without dead ends: 187 [2018-02-02 08:51:10,523 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2929 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1561, Invalid=6271, Unknown=0, NotChecked=0, Total=7832 [2018-02-02 08:51:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-02-02 08:51:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-02-02 08:51:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-02-02 08:51:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-02-02 08:51:10,526 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 169 [2018-02-02 08:51:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:10,526 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-02-02 08:51:10,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-02-02 08:51:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-02-02 08:51:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-02-02 08:51:10,527 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:10,527 INFO L351 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:51:10,528 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1232543100, now seen corresponding path program 11 times [2018-02-02 08:51:10,528 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:10,528 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:10,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:10,529 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:10,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:10,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2018-02-02 08:51:10,779 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:10,779 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 08:51:10,784 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 08:51:10,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,802 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,806 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,819 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,846 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,892 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,917 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:10,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:11,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:11,026 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:11,096 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:11,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:11,237 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:11,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:18,309 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:18,320 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:18,330 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2018-02-02 08:51:18,367 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:18,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 25 [2018-02-02 08:51:18,368 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-02-02 08:51:18,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-02-02 08:51:18,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2018-02-02 08:51:18,368 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 25 states. [2018-02-02 08:51:18,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:18,587 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2018-02-02 08:51:18,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-02-02 08:51:18,587 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 177 [2018-02-02 08:51:18,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:18,588 INFO L225 Difference]: With dead ends: 195 [2018-02-02 08:51:18,588 INFO L226 Difference]: Without dead ends: 195 [2018-02-02 08:51:18,588 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2018-02-02 08:51:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-02-02 08:51:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-02-02 08:51:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-02-02 08:51:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-02-02 08:51:18,590 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 177 [2018-02-02 08:51:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:18,590 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-02-02 08:51:18,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-02-02 08:51:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-02-02 08:51:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-02-02 08:51:18,591 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:18,591 INFO L351 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 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 08:51:18,591 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:18,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1075455068, now seen corresponding path program 12 times [2018-02-02 08:51:18,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:18,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:18,592 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:18,592 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:18,592 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:18,603 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-02-02 08:51:18,896 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:18,896 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 08:51:18,901 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 08:51:18,912 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:18,915 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:18,918 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:18,929 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:18,935 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:18,952 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:18,962 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:19,026 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:19,067 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:19,159 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:19,245 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:19,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:19,898 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:20,210 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:21,456 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:21,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:23,530 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:25,344 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:30,801 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:33,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:37,626 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 08:51:37,630 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:37,645 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-02-02 08:51:37,839 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:37,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 46 [2018-02-02 08:51:37,839 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-02-02 08:51:37,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-02-02 08:51:37,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=1310, Unknown=0, NotChecked=0, Total=2070 [2018-02-02 08:51:37,840 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 46 states. [2018-02-02 08:51:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:38,004 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2018-02-02 08:51:38,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-02-02 08:51:38,005 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 185 [2018-02-02 08:51:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:38,006 INFO L225 Difference]: With dead ends: 203 [2018-02-02 08:51:38,006 INFO L226 Difference]: Without dead ends: 203 [2018-02-02 08:51:38,006 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=805, Invalid=1357, Unknown=0, NotChecked=0, Total=2162 [2018-02-02 08:51:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-02-02 08:51:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-02-02 08:51:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-02-02 08:51:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-02-02 08:51:38,009 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 185 [2018-02-02 08:51:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:38,009 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-02-02 08:51:38,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-02-02 08:51:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-02-02 08:51:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-02-02 08:51:38,009 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:38,009 INFO L351 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 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 08:51:38,009 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1200884676, now seen corresponding path program 13 times [2018-02-02 08:51:38,010 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:38,010 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:38,010 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:38,010 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:38,010 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:38,028 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-02-02 08:51:38,394 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:38,394 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 08:51:38,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:38,430 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-02-02 08:51:38,687 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:38,687 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 48 [2018-02-02 08:51:38,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-02-02 08:51:38,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-02-02 08:51:38,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=1427, Unknown=0, NotChecked=0, Total=2256 [2018-02-02 08:51:38,688 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 48 states. [2018-02-02 08:51:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:38,850 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2018-02-02 08:51:38,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-02 08:51:38,850 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 193 [2018-02-02 08:51:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:38,851 INFO L225 Difference]: With dead ends: 211 [2018-02-02 08:51:38,851 INFO L226 Difference]: Without dead ends: 211 [2018-02-02 08:51:38,852 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=876, Invalid=1476, Unknown=0, NotChecked=0, Total=2352 [2018-02-02 08:51:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-02-02 08:51:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-02-02 08:51:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-02-02 08:51:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-02-02 08:51:38,855 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 193 [2018-02-02 08:51:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:38,855 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-02-02 08:51:38,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-02-02 08:51:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-02-02 08:51:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-02-02 08:51:38,856 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:38,856 INFO L351 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 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 08:51:38,856 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:38,856 INFO L82 PathProgramCache]: Analyzing trace with hash -610857700, now seen corresponding path program 14 times [2018-02-02 08:51:38,856 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:38,856 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:38,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:38,857 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:51:38,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:38,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-02-02 08:51:39,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:39,222 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 08:51:39,227 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:51:39,244 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:39,268 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:39,272 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:39,274 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-02-02 08:51:39,552 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:39,552 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 50 [2018-02-02 08:51:39,552 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-02-02 08:51:39,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-02-02 08:51:39,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=1549, Unknown=0, NotChecked=0, Total=2450 [2018-02-02 08:51:39,553 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 50 states. [2018-02-02 08:51:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:39,745 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2018-02-02 08:51:39,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-02-02 08:51:39,745 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 201 [2018-02-02 08:51:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:39,746 INFO L225 Difference]: With dead ends: 219 [2018-02-02 08:51:39,746 INFO L226 Difference]: Without dead ends: 219 [2018-02-02 08:51:39,747 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=950, Invalid=1600, Unknown=0, NotChecked=0, Total=2550 [2018-02-02 08:51:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-02-02 08:51:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-02-02 08:51:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-02-02 08:51:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-02-02 08:51:39,749 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 201 [2018-02-02 08:51:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:39,749 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-02-02 08:51:39,749 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-02-02 08:51:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-02-02 08:51:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-02-02 08:51:39,750 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:39,750 INFO L351 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 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 08:51:39,750 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:39,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1836716292, now seen corresponding path program 15 times [2018-02-02 08:51:39,750 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:39,750 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:39,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:39,751 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:39,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:39,762 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2018-02-02 08:51:40,132 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:40,132 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 08:51:40,136 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 08:51:40,152 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,155 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,157 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,161 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,164 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,170 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,191 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,208 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,235 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,326 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,360 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,451 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,611 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:40,929 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:41,075 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:41,371 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:42,578 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:43,310 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:44,369 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:45,530 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:46,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:47,217 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 08:51:47,220 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:47,228 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2018-02-02 08:51:47,290 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:47,290 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 29 [2018-02-02 08:51:47,291 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-02-02 08:51:47,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-02-02 08:51:47,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2018-02-02 08:51:47,291 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 29 states. [2018-02-02 08:51:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:47,700 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2018-02-02 08:51:47,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-02-02 08:51:47,700 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 209 [2018-02-02 08:51:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:47,701 INFO L225 Difference]: With dead ends: 227 [2018-02-02 08:51:47,701 INFO L226 Difference]: Without dead ends: 227 [2018-02-02 08:51:47,701 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2018-02-02 08:51:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-02-02 08:51:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-02-02 08:51:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-02-02 08:51:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-02-02 08:51:47,705 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 209 [2018-02-02 08:51:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:47,705 INFO L432 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-02-02 08:51:47,705 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-02-02 08:51:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-02-02 08:51:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-02-02 08:51:47,706 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:47,706 INFO L351 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 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 08:51:47,706 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:47,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1511843364, now seen corresponding path program 16 times [2018-02-02 08:51:47,707 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:47,707 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:47,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:47,707 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:47,708 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:47,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-02-02 08:51:48,201 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:48,201 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 08:51:48,208 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 08:51:48,255 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:51:48,260 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:51:48,280 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 08:51:48,280 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:51:48,299 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:51:48,299 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-02-02 08:51:49,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-02-02 08:51:49,175 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:51:49,178 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-02-02 08:51:49,178 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-02-02 08:51:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1081 proven. 1223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:51:49,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:51:49,373 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 56] total 83 [2018-02-02 08:51:49,373 INFO L409 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-02-02 08:51:49,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-02-02 08:51:49,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1466, Invalid=5340, Unknown=0, NotChecked=0, Total=6806 [2018-02-02 08:51:49,375 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 83 states. [2018-02-02 08:51:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:51:49,989 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2018-02-02 08:51:49,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-02-02 08:51:49,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 217 [2018-02-02 08:51:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:51:49,990 INFO L225 Difference]: With dead ends: 235 [2018-02-02 08:51:49,990 INFO L226 Difference]: Without dead ends: 235 [2018-02-02 08:51:49,992 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4903 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2566, Invalid=10090, Unknown=0, NotChecked=0, Total=12656 [2018-02-02 08:51:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-02-02 08:51:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-02-02 08:51:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-02-02 08:51:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-02-02 08:51:49,995 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 217 [2018-02-02 08:51:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:51:49,995 INFO L432 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-02-02 08:51:49,996 INFO L433 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-02-02 08:51:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-02-02 08:51:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-02-02 08:51:49,997 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:51:49,997 INFO L351 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 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 08:51:49,997 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-02-02 08:51:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash -568783428, now seen corresponding path program 17 times [2018-02-02 08:51:49,997 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:51:49,997 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:51:49,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:49,998 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:51:49,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:51:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:51:50,017 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:51:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-02-02 08:51:50,391 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:51:50,391 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 08:51:50,396 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 08:51:50,404 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,406 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,409 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,411 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,492 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,550 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:50,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:51,192 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:52,772 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:53,623 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:51:54,361 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-02-02 08:51:59,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown