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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-examples/standard_strcpy_original_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 12:17:17,809 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 12:17:17,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 12:17:17,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 12:17:17,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 12:17:17,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 12:17:17,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 12:17:17,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 12:17:17,827 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 12:17:17,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 12:17:17,828 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 12:17:17,828 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 12:17:17,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 12:17:17,830 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 12:17:17,831 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 12:17:17,833 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 12:17:17,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 12:17:17,836 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 12:17:17,836 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 12:17:17,837 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 12:17:17,839 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 12:17:17,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 12:17:17,843 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 12:17:17,843 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-04 12:17:17,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 12:17:17,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 12:17:17,853 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 12:17:17,853 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 12:17:17,854 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 12:17:17,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 12:17:17,855 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 12:17:17,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 12:17:17,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 12:17:17,856 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-04 12:17:17,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 12:17:17,893 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 12:17:17,896 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 12:17:17,897 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 12:17:17,897 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 12:17:17,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_original_false-valid-deref.i [2018-02-04 12:17:18,106 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 12:17:18,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 12:17:18,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 12:17:18,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 12:17:18,113 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 12:17:18,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bd712e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18, skipping insertion in model container [2018-02-04 12:17:18,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,129 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 12:17:18,142 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 12:17:18,227 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 12:17:18,235 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 12:17:18,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18 WrapperNode [2018-02-04 12:17:18,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 12:17:18,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 12:17:18,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 12:17:18,239 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 12:17:18,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (1/1) ... [2018-02-04 12:17:18,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 12:17:18,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 12:17:18,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 12:17:18,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 12:17:18,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (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 [2018-02-04 12:17:18,293 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 12:17:18,293 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 12:17:18,293 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-02-04 12:17:18,293 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 12:17:18,293 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-04 12:17:18,293 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-02-04 12:17:18,294 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 12:17:18,294 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 12:17:18,294 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 12:17:18,391 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 12:17:18,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:17:18 BoogieIcfgContainer [2018-02-04 12:17:18,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 12:17:18,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 12:17:18,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 12:17:18,395 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 12:17:18,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 12:17:18" (1/3) ... [2018-02-04 12:17:18,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bf9adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:17:18, skipping insertion in model container [2018-02-04 12:17:18,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:17:18" (2/3) ... [2018-02-04 12:17:18,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bf9adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:17:18, skipping insertion in model container [2018-02-04 12:17:18,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:17:18" (3/3) ... [2018-02-04 12:17:18,398 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original_false-valid-deref.i [2018-02-04 12:17:18,405 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 12:17:18,412 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-02-04 12:17:18,445 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 12:17:18,445 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 12:17:18,445 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 12:17:18,446 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 12:17:18,446 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 12:17:18,446 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 12:17:18,446 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 12:17:18,446 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 12:17:18,447 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 12:17:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-02-04 12:17:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-04 12:17:18,466 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:18,466 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:18,467 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1734695582, now seen corresponding path program 1 times [2018-02-04 12:17:18,472 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:18,472 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:18,512 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:18,512 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:18,512 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:18,537 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:18,594 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:17:18,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 12:17:18,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 12:17:18,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 12:17:18,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 12:17:18,604 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2018-02-04 12:17:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:18,665 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-02-04 12:17:18,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 12:17:18,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-04 12:17:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:18,671 INFO L225 Difference]: With dead ends: 50 [2018-02-04 12:17:18,671 INFO L226 Difference]: Without dead ends: 41 [2018-02-04 12:17:18,672 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 12:17:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-04 12:17:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2018-02-04 12:17:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 12:17:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-02-04 12:17:18,739 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 7 [2018-02-04 12:17:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:18,739 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-02-04 12:17:18,739 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 12:17:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-02-04 12:17:18,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 12:17:18,739 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:18,740 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:18,740 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:18,740 INFO L82 PathProgramCache]: Analyzing trace with hash 337601429, now seen corresponding path program 1 times [2018-02-04 12:17:18,740 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:18,740 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:18,741 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:18,741 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:18,741 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:18,750 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:18,784 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:18,784 INFO L213 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 [2018-02-04 12:17:18,794 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:18,805 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:18,851 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:18,851 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-02-04 12:17:18,852 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 12:17:18,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 12:17:18,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 12:17:18,853 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2018-02-04 12:17:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:18,926 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-02-04 12:17:18,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 12:17:18,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-02-04 12:17:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:18,927 INFO L225 Difference]: With dead ends: 54 [2018-02-04 12:17:18,928 INFO L226 Difference]: Without dead ends: 54 [2018-02-04 12:17:18,928 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 12:17:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-04 12:17:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-02-04 12:17:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-04 12:17:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-04 12:17:18,933 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 12 [2018-02-04 12:17:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:18,934 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-04 12:17:18,934 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 12:17:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-04 12:17:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 12:17:18,935 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:18,935 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:18,935 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:18,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1746445058, now seen corresponding path program 2 times [2018-02-04 12:17:18,935 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:18,936 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:18,936 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:18,936 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:18,937 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:18,944 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:18,985 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:18,986 INFO L213 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 [2018-02-04 12:17:18,991 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:17:19,005 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:17:19,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:19,007 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,041 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:19,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-02-04 12:17:19,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 12:17:19,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 12:17:19,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 12:17:19,043 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2018-02-04 12:17:19,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:19,154 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-02-04 12:17:19,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 12:17:19,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-02-04 12:17:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:19,157 INFO L225 Difference]: With dead ends: 67 [2018-02-04 12:17:19,157 INFO L226 Difference]: Without dead ends: 67 [2018-02-04 12:17:19,157 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 12:17:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-02-04 12:17:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2018-02-04 12:17:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-02-04 12:17:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2018-02-04 12:17:19,164 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 17 [2018-02-04 12:17:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:19,164 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2018-02-04 12:17:19,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 12:17:19,165 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2018-02-04 12:17:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 12:17:19,165 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:19,166 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:19,166 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash -228598475, now seen corresponding path program 3 times [2018-02-04 12:17:19,166 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:19,166 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:19,167 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:19,167 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:19,167 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:19,175 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:19,222 INFO L213 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 [2018-02-04 12:17:19,229 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:17:19,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-02-04 12:17:19,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:19,240 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:19,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-02-04 12:17:19,278 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 12:17:19,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 12:17:19,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-04 12:17:19,278 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 7 states. [2018-02-04 12:17:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:19,414 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2018-02-04 12:17:19,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 12:17:19,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-02-04 12:17:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:19,415 INFO L225 Difference]: With dead ends: 80 [2018-02-04 12:17:19,416 INFO L226 Difference]: Without dead ends: 80 [2018-02-04 12:17:19,416 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-02-04 12:17:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-02-04 12:17:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2018-02-04 12:17:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-02-04 12:17:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2018-02-04 12:17:19,419 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 22 [2018-02-04 12:17:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:19,420 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2018-02-04 12:17:19,420 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 12:17:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2018-02-04 12:17:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-04 12:17:19,420 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:19,420 INFO L351 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:19,420 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash 756148062, now seen corresponding path program 4 times [2018-02-04 12:17:19,420 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:19,421 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:19,421 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:19,421 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:19,421 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:19,427 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,490 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:19,490 INFO L213 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 [2018-02-04 12:17:19,495 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:17:19,503 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:17:19,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:19,504 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,529 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:19,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-02-04 12:17:19,530 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 12:17:19,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 12:17:19,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 12:17:19,530 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2018-02-04 12:17:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:19,671 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2018-02-04 12:17:19,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 12:17:19,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-02-04 12:17:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:19,672 INFO L225 Difference]: With dead ends: 93 [2018-02-04 12:17:19,672 INFO L226 Difference]: Without dead ends: 93 [2018-02-04 12:17:19,673 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 12:17:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-02-04 12:17:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2018-02-04 12:17:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-02-04 12:17:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2018-02-04 12:17:19,679 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 27 [2018-02-04 12:17:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:19,679 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2018-02-04 12:17:19,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 12:17:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2018-02-04 12:17:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-04 12:17:19,680 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:19,680 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:19,680 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash 671928021, now seen corresponding path program 5 times [2018-02-04 12:17:19,681 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:19,681 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:19,681 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:19,682 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:19,682 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:19,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,744 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:19,744 INFO L213 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 [2018-02-04 12:17:19,749 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:17:19,759 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-02-04 12:17:19,759 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:19,761 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:19,811 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:19,812 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-02-04 12:17:19,812 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-04 12:17:19,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-04 12:17:19,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-02-04 12:17:19,812 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 14 states. [2018-02-04 12:17:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:20,038 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2018-02-04 12:17:20,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 12:17:20,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-02-04 12:17:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:20,039 INFO L225 Difference]: With dead ends: 106 [2018-02-04 12:17:20,039 INFO L226 Difference]: Without dead ends: 106 [2018-02-04 12:17:20,039 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-02-04 12:17:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-02-04 12:17:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2018-02-04 12:17:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-02-04 12:17:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2018-02-04 12:17:20,044 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 32 [2018-02-04 12:17:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:20,045 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2018-02-04 12:17:20,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-04 12:17:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2018-02-04 12:17:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-02-04 12:17:20,045 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:20,045 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:20,045 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash -203753026, now seen corresponding path program 6 times [2018-02-04 12:17:20,046 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:20,046 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:20,046 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:20,046 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:20,047 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:20,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:20,113 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:20,113 INFO L213 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 [2018-02-04 12:17:20,118 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:17:20,132 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-02-04 12:17:20,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:20,133 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:20,175 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:20,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-02-04 12:17:20,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-04 12:17:20,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-04 12:17:20,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-02-04 12:17:20,176 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 13 states. [2018-02-04 12:17:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:20,331 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2018-02-04 12:17:20,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 12:17:20,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2018-02-04 12:17:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:20,332 INFO L225 Difference]: With dead ends: 119 [2018-02-04 12:17:20,332 INFO L226 Difference]: Without dead ends: 119 [2018-02-04 12:17:20,333 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-02-04 12:17:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-02-04 12:17:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 110. [2018-02-04 12:17:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-02-04 12:17:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2018-02-04 12:17:20,338 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 37 [2018-02-04 12:17:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:20,339 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2018-02-04 12:17:20,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-04 12:17:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2018-02-04 12:17:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-02-04 12:17:20,340 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:20,340 INFO L351 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:20,340 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:20,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1846527883, now seen corresponding path program 7 times [2018-02-04 12:17:20,340 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:20,340 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:20,341 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:20,341 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:20,341 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:20,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:20,431 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:20,431 INFO L213 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 [2018-02-04 12:17:20,440 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:20,457 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:20,585 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:20,586 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2018-02-04 12:17:20,586 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-02-04 12:17:20,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-02-04 12:17:20,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-02-04 12:17:20,587 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 19 states. [2018-02-04 12:17:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:20,939 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2018-02-04 12:17:20,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 12:17:20,939 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2018-02-04 12:17:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:20,940 INFO L225 Difference]: With dead ends: 132 [2018-02-04 12:17:20,940 INFO L226 Difference]: Without dead ends: 132 [2018-02-04 12:17:20,940 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-02-04 12:17:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-02-04 12:17:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 122. [2018-02-04 12:17:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-02-04 12:17:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2018-02-04 12:17:20,944 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 42 [2018-02-04 12:17:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:20,944 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2018-02-04 12:17:20,944 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-02-04 12:17:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2018-02-04 12:17:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-02-04 12:17:20,945 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:20,945 INFO L351 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:20,945 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2109248542, now seen corresponding path program 8 times [2018-02-04 12:17:20,945 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:20,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:20,946 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:20,946 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:20,946 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:20,952 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:21,041 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:21,041 INFO L213 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 [2018-02-04 12:17:21,047 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:17:21,056 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:17:21,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:21,058 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:21,100 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:21,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-02-04 12:17:21,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 12:17:21,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 12:17:21,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-02-04 12:17:21,102 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand 11 states. [2018-02-04 12:17:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:21,527 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2018-02-04 12:17:21,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-04 12:17:21,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2018-02-04 12:17:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:21,528 INFO L225 Difference]: With dead ends: 145 [2018-02-04 12:17:21,529 INFO L226 Difference]: Without dead ends: 145 [2018-02-04 12:17:21,529 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-02-04 12:17:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-02-04 12:17:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2018-02-04 12:17:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-02-04 12:17:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2018-02-04 12:17:21,533 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 47 [2018-02-04 12:17:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:21,533 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2018-02-04 12:17:21,533 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 12:17:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2018-02-04 12:17:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-02-04 12:17:21,534 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:21,535 INFO L351 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:21,535 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:21,535 INFO L82 PathProgramCache]: Analyzing trace with hash 408164885, now seen corresponding path program 9 times [2018-02-04 12:17:21,535 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:21,535 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:21,536 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:21,536 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:21,536 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:21,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:21,641 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:21,641 INFO L213 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 [2018-02-04 12:17:21,646 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:17:21,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-02-04 12:17:21,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:21,664 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:21,687 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:21,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-02-04 12:17:21,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-04 12:17:21,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-04 12:17:21,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-02-04 12:17:21,688 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand 13 states. [2018-02-04 12:17:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:21,916 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2018-02-04 12:17:21,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 12:17:21,916 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-02-04 12:17:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:21,917 INFO L225 Difference]: With dead ends: 158 [2018-02-04 12:17:21,918 INFO L226 Difference]: Without dead ends: 158 [2018-02-04 12:17:21,918 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2018-02-04 12:17:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-02-04 12:17:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2018-02-04 12:17:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-02-04 12:17:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2018-02-04 12:17:21,922 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 52 [2018-02-04 12:17:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:21,922 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2018-02-04 12:17:21,922 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-04 12:17:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2018-02-04 12:17:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-02-04 12:17:21,923 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:21,923 INFO L351 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:21,923 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:21,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2136951170, now seen corresponding path program 10 times [2018-02-04 12:17:21,923 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:21,923 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:21,924 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:21,924 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:21,924 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:21,931 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:22,033 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:22,033 INFO L213 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 [2018-02-04 12:17:22,040 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:17:22,053 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:17:22,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:22,055 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:22,145 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:22,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2018-02-04 12:17:22,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-02-04 12:17:22,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-02-04 12:17:22,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2018-02-04 12:17:22,146 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 25 states. [2018-02-04 12:17:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:22,615 INFO L93 Difference]: Finished difference Result 171 states and 194 transitions. [2018-02-04 12:17:22,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-04 12:17:22,616 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-02-04 12:17:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:22,616 INFO L225 Difference]: With dead ends: 171 [2018-02-04 12:17:22,617 INFO L226 Difference]: Without dead ends: 171 [2018-02-04 12:17:22,617 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2018-02-04 12:17:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-02-04 12:17:22,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2018-02-04 12:17:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-02-04 12:17:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 180 transitions. [2018-02-04 12:17:22,621 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 180 transitions. Word has length 57 [2018-02-04 12:17:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:22,621 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 180 transitions. [2018-02-04 12:17:22,621 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-02-04 12:17:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 180 transitions. [2018-02-04 12:17:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-02-04 12:17:22,622 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:22,623 INFO L351 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:22,623 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:22,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1325560757, now seen corresponding path program 11 times [2018-02-04 12:17:22,623 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:22,623 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:22,624 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:22,624 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:22,624 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:22,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:22,718 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:22,718 INFO L213 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 [2018-02-04 12:17:22,723 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:17:22,752 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-02-04 12:17:22,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:22,754 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:22,881 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:22,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-02-04 12:17:22,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-04 12:17:22,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-04 12:17:22,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-02-04 12:17:22,882 INFO L87 Difference]: Start difference. First operand 158 states and 180 transitions. Second operand 26 states. [2018-02-04 12:17:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:23,339 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2018-02-04 12:17:23,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-04 12:17:23,340 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-02-04 12:17:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:23,340 INFO L225 Difference]: With dead ends: 184 [2018-02-04 12:17:23,341 INFO L226 Difference]: Without dead ends: 184 [2018-02-04 12:17:23,341 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-02-04 12:17:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-02-04 12:17:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 170. [2018-02-04 12:17:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-02-04 12:17:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2018-02-04 12:17:23,345 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 62 [2018-02-04 12:17:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:23,345 INFO L432 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2018-02-04 12:17:23,345 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-04 12:17:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2018-02-04 12:17:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-02-04 12:17:23,346 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:23,346 INFO L351 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:23,346 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:23,346 INFO L82 PathProgramCache]: Analyzing trace with hash 923361502, now seen corresponding path program 12 times [2018-02-04 12:17:23,346 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:23,347 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:23,347 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:23,347 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:23,347 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:23,355 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:23,467 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:23,467 INFO L213 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 [2018-02-04 12:17:23,475 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:17:23,491 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-02-04 12:17:23,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:23,493 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:23,570 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:23,570 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 19 [2018-02-04 12:17:23,570 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-02-04 12:17:23,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-02-04 12:17:23,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-02-04 12:17:23,571 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 20 states. [2018-02-04 12:17:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:23,848 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2018-02-04 12:17:23,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-04 12:17:23,848 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2018-02-04 12:17:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:23,849 INFO L225 Difference]: With dead ends: 197 [2018-02-04 12:17:23,849 INFO L226 Difference]: Without dead ends: 197 [2018-02-04 12:17:23,850 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=690, Unknown=0, NotChecked=0, Total=992 [2018-02-04 12:17:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-02-04 12:17:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 182. [2018-02-04 12:17:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-02-04 12:17:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2018-02-04 12:17:23,854 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 67 [2018-02-04 12:17:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:23,854 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2018-02-04 12:17:23,854 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-02-04 12:17:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2018-02-04 12:17:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-02-04 12:17:23,855 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:23,855 INFO L351 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:23,855 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:23,855 INFO L82 PathProgramCache]: Analyzing trace with hash 356861269, now seen corresponding path program 13 times [2018-02-04 12:17:23,855 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:23,855 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:23,856 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:23,856 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:23,856 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:23,863 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:23,974 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:23,974 INFO L213 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 [2018-02-04 12:17:23,979 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:23,988 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:24,091 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:24,091 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2018-02-04 12:17:24,091 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-02-04 12:17:24,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-02-04 12:17:24,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-02-04 12:17:24,092 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand 31 states. [2018-02-04 12:17:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:24,788 INFO L93 Difference]: Finished difference Result 210 states and 239 transitions. [2018-02-04 12:17:24,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-04 12:17:24,788 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-02-04 12:17:24,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:24,789 INFO L225 Difference]: With dead ends: 210 [2018-02-04 12:17:24,789 INFO L226 Difference]: Without dead ends: 210 [2018-02-04 12:17:24,789 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-02-04 12:17:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-02-04 12:17:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 194. [2018-02-04 12:17:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-02-04 12:17:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 222 transitions. [2018-02-04 12:17:24,793 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 222 transitions. Word has length 72 [2018-02-04 12:17:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:24,793 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 222 transitions. [2018-02-04 12:17:24,793 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-02-04 12:17:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 222 transitions. [2018-02-04 12:17:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-02-04 12:17:24,794 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:24,794 INFO L351 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:24,794 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1075276994, now seen corresponding path program 14 times [2018-02-04 12:17:24,794 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:24,794 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:24,795 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:24,795 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:24,795 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:24,802 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:24,923 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:24,923 INFO L213 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 [2018-02-04 12:17:24,932 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:17:24,944 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:17:24,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:24,946 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:25,105 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:25,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2018-02-04 12:17:25,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-02-04 12:17:25,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-02-04 12:17:25,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2018-02-04 12:17:25,106 INFO L87 Difference]: Start difference. First operand 194 states and 222 transitions. Second operand 33 states. [2018-02-04 12:17:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:25,903 INFO L93 Difference]: Finished difference Result 223 states and 254 transitions. [2018-02-04 12:17:25,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-04 12:17:25,903 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 77 [2018-02-04 12:17:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:25,904 INFO L225 Difference]: With dead ends: 223 [2018-02-04 12:17:25,904 INFO L226 Difference]: Without dead ends: 223 [2018-02-04 12:17:25,904 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2018-02-04 12:17:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-02-04 12:17:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2018-02-04 12:17:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-02-04 12:17:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2018-02-04 12:17:25,907 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 77 [2018-02-04 12:17:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:25,907 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2018-02-04 12:17:25,907 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-02-04 12:17:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2018-02-04 12:17:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-02-04 12:17:25,908 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:25,908 INFO L351 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:25,908 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash 904302325, now seen corresponding path program 15 times [2018-02-04 12:17:25,908 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:25,908 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:25,909 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:25,909 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:25,909 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:25,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:26,021 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:26,021 INFO L213 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 [2018-02-04 12:17:26,026 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:17:26,045 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-02-04 12:17:26,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:26,046 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:26,075 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:26,075 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-02-04 12:17:26,075 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-02-04 12:17:26,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-02-04 12:17:26,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-02-04 12:17:26,076 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand 19 states. [2018-02-04 12:17:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:26,357 INFO L93 Difference]: Finished difference Result 236 states and 269 transitions. [2018-02-04 12:17:26,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-04 12:17:26,358 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 82 [2018-02-04 12:17:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:26,359 INFO L225 Difference]: With dead ends: 236 [2018-02-04 12:17:26,359 INFO L226 Difference]: Without dead ends: 236 [2018-02-04 12:17:26,359 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=411, Invalid=711, Unknown=0, NotChecked=0, Total=1122 [2018-02-04 12:17:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-02-04 12:17:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 218. [2018-02-04 12:17:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-02-04 12:17:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 250 transitions. [2018-02-04 12:17:26,364 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 250 transitions. Word has length 82 [2018-02-04 12:17:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:26,364 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 250 transitions. [2018-02-04 12:17:26,364 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-02-04 12:17:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 250 transitions. [2018-02-04 12:17:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-02-04 12:17:26,365 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:26,365 INFO L351 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:26,365 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:26,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2125745566, now seen corresponding path program 16 times [2018-02-04 12:17:26,366 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:26,366 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:26,366 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:26,367 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:26,367 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:26,374 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:26,596 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:26,596 INFO L213 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 [2018-02-04 12:17:26,601 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:17:26,612 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:17:26,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:26,613 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:26,658 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:26,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-02-04 12:17:26,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-02-04 12:17:26,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-02-04 12:17:26,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-02-04 12:17:26,659 INFO L87 Difference]: Start difference. First operand 218 states and 250 transitions. Second operand 19 states. [2018-02-04 12:17:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:27,567 INFO L93 Difference]: Finished difference Result 249 states and 284 transitions. [2018-02-04 12:17:27,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-04 12:17:27,567 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87 [2018-02-04 12:17:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:27,568 INFO L225 Difference]: With dead ends: 249 [2018-02-04 12:17:27,568 INFO L226 Difference]: Without dead ends: 249 [2018-02-04 12:17:27,568 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-02-04 12:17:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-02-04 12:17:27,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 230. [2018-02-04 12:17:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-02-04 12:17:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 264 transitions. [2018-02-04 12:17:27,571 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 264 transitions. Word has length 87 [2018-02-04 12:17:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:27,571 INFO L432 AbstractCegarLoop]: Abstraction has 230 states and 264 transitions. [2018-02-04 12:17:27,571 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-02-04 12:17:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 264 transitions. [2018-02-04 12:17:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-02-04 12:17:27,572 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:27,572 INFO L351 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:27,572 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 120606869, now seen corresponding path program 17 times [2018-02-04 12:17:27,573 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:27,573 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:27,573 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:27,574 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:27,574 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:27,582 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:27,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:27,692 INFO L213 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 [2018-02-04 12:17:27,697 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:17:27,728 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-02-04 12:17:27,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:27,731 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:27,887 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:27,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2018-02-04 12:17:27,888 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-02-04 12:17:27,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-02-04 12:17:27,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-02-04 12:17:27,889 INFO L87 Difference]: Start difference. First operand 230 states and 264 transitions. Second operand 38 states. [2018-02-04 12:17:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:28,671 INFO L93 Difference]: Finished difference Result 262 states and 299 transitions. [2018-02-04 12:17:28,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-04 12:17:28,671 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 92 [2018-02-04 12:17:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:28,672 INFO L225 Difference]: With dead ends: 262 [2018-02-04 12:17:28,672 INFO L226 Difference]: Without dead ends: 262 [2018-02-04 12:17:28,672 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-02-04 12:17:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-02-04 12:17:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 242. [2018-02-04 12:17:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-02-04 12:17:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2018-02-04 12:17:28,677 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 92 [2018-02-04 12:17:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:28,678 INFO L432 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2018-02-04 12:17:28,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-02-04 12:17:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2018-02-04 12:17:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-02-04 12:17:28,679 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:28,679 INFO L351 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:28,679 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:28,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2070056958, now seen corresponding path program 18 times [2018-02-04 12:17:28,679 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:28,679 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:28,680 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:28,680 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:28,680 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:28,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:28,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:28,838 INFO L213 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 [2018-02-04 12:17:28,843 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:17:28,867 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-02-04 12:17:28,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:28,869 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:28,924 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:28,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 24 [2018-02-04 12:17:28,925 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-02-04 12:17:28,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-02-04 12:17:28,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2018-02-04 12:17:28,925 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand 25 states. [2018-02-04 12:17:29,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:29,376 INFO L93 Difference]: Finished difference Result 275 states and 314 transitions. [2018-02-04 12:17:29,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-02-04 12:17:29,377 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2018-02-04 12:17:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:29,378 INFO L225 Difference]: With dead ends: 275 [2018-02-04 12:17:29,378 INFO L226 Difference]: Without dead ends: 275 [2018-02-04 12:17:29,378 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=620, Invalid=1186, Unknown=0, NotChecked=0, Total=1806 [2018-02-04 12:17:29,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-02-04 12:17:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2018-02-04 12:17:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-02-04 12:17:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 292 transitions. [2018-02-04 12:17:29,381 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 292 transitions. Word has length 97 [2018-02-04 12:17:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:29,381 INFO L432 AbstractCegarLoop]: Abstraction has 254 states and 292 transitions. [2018-02-04 12:17:29,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-02-04 12:17:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 292 transitions. [2018-02-04 12:17:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-02-04 12:17:29,382 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:29,382 INFO L351 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:29,382 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 183274037, now seen corresponding path program 19 times [2018-02-04 12:17:29,382 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:29,382 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:29,383 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:29,383 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:29,383 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:29,391 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:29,572 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:29,572 INFO L213 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 [2018-02-04 12:17:29,584 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:29,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:29,807 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:29,807 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 42 [2018-02-04 12:17:29,808 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-02-04 12:17:29,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-02-04 12:17:29,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-02-04 12:17:29,809 INFO L87 Difference]: Start difference. First operand 254 states and 292 transitions. Second operand 43 states. [2018-02-04 12:17:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:31,110 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2018-02-04 12:17:31,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-04 12:17:31,110 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 102 [2018-02-04 12:17:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:31,111 INFO L225 Difference]: With dead ends: 288 [2018-02-04 12:17:31,111 INFO L226 Difference]: Without dead ends: 288 [2018-02-04 12:17:31,112 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-02-04 12:17:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-02-04 12:17:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 266. [2018-02-04 12:17:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-02-04 12:17:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 306 transitions. [2018-02-04 12:17:31,116 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 306 transitions. Word has length 102 [2018-02-04 12:17:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:31,116 INFO L432 AbstractCegarLoop]: Abstraction has 266 states and 306 transitions. [2018-02-04 12:17:31,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-02-04 12:17:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 306 transitions. [2018-02-04 12:17:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-02-04 12:17:31,117 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:31,117 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:31,117 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1033282978, now seen corresponding path program 20 times [2018-02-04 12:17:31,118 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:31,118 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:31,118 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:31,118 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:31,119 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:31,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:31,324 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:31,324 INFO L213 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 [2018-02-04 12:17:31,330 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:17:31,345 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:17:31,345 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:31,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:31,652 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:31,652 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2018-02-04 12:17:31,653 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-02-04 12:17:31,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-02-04 12:17:31,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1518, Unknown=0, NotChecked=0, Total=1980 [2018-02-04 12:17:31,653 INFO L87 Difference]: Start difference. First operand 266 states and 306 transitions. Second operand 45 states. [2018-02-04 12:17:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:33,144 INFO L93 Difference]: Finished difference Result 301 states and 344 transitions. [2018-02-04 12:17:33,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-02-04 12:17:33,144 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 107 [2018-02-04 12:17:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:33,145 INFO L225 Difference]: With dead ends: 301 [2018-02-04 12:17:33,145 INFO L226 Difference]: Without dead ends: 301 [2018-02-04 12:17:33,146 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1518, Unknown=0, NotChecked=0, Total=1980 [2018-02-04 12:17:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-02-04 12:17:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 278. [2018-02-04 12:17:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-02-04 12:17:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 320 transitions. [2018-02-04 12:17:33,149 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 320 transitions. Word has length 107 [2018-02-04 12:17:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:33,149 INFO L432 AbstractCegarLoop]: Abstraction has 278 states and 320 transitions. [2018-02-04 12:17:33,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-02-04 12:17:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 320 transitions. [2018-02-04 12:17:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-02-04 12:17:33,150 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:33,150 INFO L351 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:33,150 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1905968171, now seen corresponding path program 21 times [2018-02-04 12:17:33,150 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:33,150 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:33,150 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:33,150 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:33,151 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:33,156 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:33,330 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:33,330 INFO L213 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 [2018-02-04 12:17:33,335 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:17:33,378 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-02-04 12:17:33,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:33,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:33,431 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:33,432 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-02-04 12:17:33,432 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-02-04 12:17:33,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-02-04 12:17:33,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=342, Unknown=0, NotChecked=0, Total=600 [2018-02-04 12:17:33,433 INFO L87 Difference]: Start difference. First operand 278 states and 320 transitions. Second operand 25 states. [2018-02-04 12:17:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:33,934 INFO L93 Difference]: Finished difference Result 314 states and 359 transitions. [2018-02-04 12:17:33,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-02-04 12:17:33,936 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 112 [2018-02-04 12:17:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:33,937 INFO L225 Difference]: With dead ends: 314 [2018-02-04 12:17:33,937 INFO L226 Difference]: Without dead ends: 314 [2018-02-04 12:17:33,937 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=762, Invalid=1308, Unknown=0, NotChecked=0, Total=2070 [2018-02-04 12:17:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-02-04 12:17:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 290. [2018-02-04 12:17:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-02-04 12:17:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 334 transitions. [2018-02-04 12:17:33,941 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 334 transitions. Word has length 112 [2018-02-04 12:17:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:33,941 INFO L432 AbstractCegarLoop]: Abstraction has 290 states and 334 transitions. [2018-02-04 12:17:33,941 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-02-04 12:17:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 334 transitions. [2018-02-04 12:17:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-02-04 12:17:33,942 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:33,942 INFO L351 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:33,943 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:33,943 INFO L82 PathProgramCache]: Analyzing trace with hash -994136898, now seen corresponding path program 22 times [2018-02-04 12:17:33,943 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:33,943 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:33,944 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:33,944 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:33,944 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:33,952 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:34,140 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:34,140 INFO L213 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 [2018-02-04 12:17:34,144 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:17:34,157 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:17:34,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:34,159 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:34,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:34,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2018-02-04 12:17:34,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-02-04 12:17:34,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-02-04 12:17:34,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1752, Unknown=0, NotChecked=0, Total=2352 [2018-02-04 12:17:34,351 INFO L87 Difference]: Start difference. First operand 290 states and 334 transitions. Second operand 49 states. [2018-02-04 12:17:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:35,406 INFO L93 Difference]: Finished difference Result 327 states and 374 transitions. [2018-02-04 12:17:35,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-02-04 12:17:35,406 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 117 [2018-02-04 12:17:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:35,407 INFO L225 Difference]: With dead ends: 327 [2018-02-04 12:17:35,407 INFO L226 Difference]: Without dead ends: 327 [2018-02-04 12:17:35,408 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=600, Invalid=1752, Unknown=0, NotChecked=0, Total=2352 [2018-02-04 12:17:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-02-04 12:17:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 302. [2018-02-04 12:17:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-02-04 12:17:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 348 transitions. [2018-02-04 12:17:35,411 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 348 transitions. Word has length 117 [2018-02-04 12:17:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:35,411 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 348 transitions. [2018-02-04 12:17:35,411 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-02-04 12:17:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 348 transitions. [2018-02-04 12:17:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-02-04 12:17:35,411 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:35,412 INFO L351 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:35,412 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1248093557, now seen corresponding path program 23 times [2018-02-04 12:17:35,412 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:35,412 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:35,412 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:35,412 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:35,412 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:35,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:35,642 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:35,642 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:35,647 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:17:35,707 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-02-04 12:17:35,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:35,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:35,978 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:35,978 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2018-02-04 12:17:35,978 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-02-04 12:17:35,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-02-04 12:17:35,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-02-04 12:17:35,979 INFO L87 Difference]: Start difference. First operand 302 states and 348 transitions. Second operand 50 states. [2018-02-04 12:17:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:37,490 INFO L93 Difference]: Finished difference Result 340 states and 389 transitions. [2018-02-04 12:17:37,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-04 12:17:37,491 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 122 [2018-02-04 12:17:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:37,491 INFO L225 Difference]: With dead ends: 340 [2018-02-04 12:17:37,491 INFO L226 Difference]: Without dead ends: 340 [2018-02-04 12:17:37,492 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-02-04 12:17:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-02-04 12:17:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 314. [2018-02-04 12:17:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-02-04 12:17:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 362 transitions. [2018-02-04 12:17:37,495 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 362 transitions. Word has length 122 [2018-02-04 12:17:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:37,495 INFO L432 AbstractCegarLoop]: Abstraction has 314 states and 362 transitions. [2018-02-04 12:17:37,495 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-02-04 12:17:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 362 transitions. [2018-02-04 12:17:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-02-04 12:17:37,496 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:37,496 INFO L351 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:37,496 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:37,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1210546402, now seen corresponding path program 24 times [2018-02-04 12:17:37,496 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:37,496 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:37,497 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:37,497 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:37,497 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:37,502 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:37,709 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:37,709 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:37,713 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:17:37,756 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-02-04 12:17:37,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:37,758 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:37,888 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:37,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 36 [2018-02-04 12:17:37,889 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-02-04 12:17:37,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-02-04 12:17:37,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=932, Unknown=0, NotChecked=0, Total=1332 [2018-02-04 12:17:37,889 INFO L87 Difference]: Start difference. First operand 314 states and 362 transitions. Second operand 37 states. [2018-02-04 12:17:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:38,731 INFO L93 Difference]: Finished difference Result 353 states and 404 transitions. [2018-02-04 12:17:38,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-02-04 12:17:38,732 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 127 [2018-02-04 12:17:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:38,733 INFO L225 Difference]: With dead ends: 353 [2018-02-04 12:17:38,733 INFO L226 Difference]: Without dead ends: 353 [2018-02-04 12:17:38,733 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1067, Invalid=2593, Unknown=0, NotChecked=0, Total=3660 [2018-02-04 12:17:38,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-02-04 12:17:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 326. [2018-02-04 12:17:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-02-04 12:17:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 376 transitions. [2018-02-04 12:17:38,736 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 376 transitions. Word has length 127 [2018-02-04 12:17:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:38,736 INFO L432 AbstractCegarLoop]: Abstraction has 326 states and 376 transitions. [2018-02-04 12:17:38,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-02-04 12:17:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 376 transitions. [2018-02-04 12:17:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-02-04 12:17:38,737 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:38,737 INFO L351 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:38,737 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash 53741333, now seen corresponding path program 25 times [2018-02-04 12:17:38,737 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:38,737 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:38,738 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:38,738 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:38,738 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:38,743 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:38,982 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:38,982 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:38,987 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:39,006 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:39,262 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:39,262 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 54 [2018-02-04 12:17:39,263 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-02-04 12:17:39,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-02-04 12:17:39,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-02-04 12:17:39,264 INFO L87 Difference]: Start difference. First operand 326 states and 376 transitions. Second operand 55 states. [2018-02-04 12:17:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:41,108 INFO L93 Difference]: Finished difference Result 366 states and 419 transitions. [2018-02-04 12:17:41,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-02-04 12:17:41,108 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 132 [2018-02-04 12:17:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:41,109 INFO L225 Difference]: With dead ends: 366 [2018-02-04 12:17:41,109 INFO L226 Difference]: Without dead ends: 366 [2018-02-04 12:17:41,110 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-02-04 12:17:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-02-04 12:17:41,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 338. [2018-02-04 12:17:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-02-04 12:17:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 390 transitions. [2018-02-04 12:17:41,113 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 390 transitions. Word has length 132 [2018-02-04 12:17:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:41,113 INFO L432 AbstractCegarLoop]: Abstraction has 338 states and 390 transitions. [2018-02-04 12:17:41,113 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-02-04 12:17:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 390 transitions. [2018-02-04 12:17:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-02-04 12:17:41,114 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:41,114 INFO L351 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:41,114 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:41,114 INFO L82 PathProgramCache]: Analyzing trace with hash -173217410, now seen corresponding path program 26 times [2018-02-04 12:17:41,114 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:41,114 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:41,115 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:41,115 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:41,115 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:41,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:41,366 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:41,366 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:41,371 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:17:41,386 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:17:41,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:41,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:41,623 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:41,624 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 56 [2018-02-04 12:17:41,624 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-02-04 12:17:41,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-02-04 12:17:41,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=2380, Unknown=0, NotChecked=0, Total=3192 [2018-02-04 12:17:41,625 INFO L87 Difference]: Start difference. First operand 338 states and 390 transitions. Second operand 57 states. [2018-02-04 12:17:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:43,541 INFO L93 Difference]: Finished difference Result 379 states and 434 transitions. [2018-02-04 12:17:43,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-02-04 12:17:43,541 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 137 [2018-02-04 12:17:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:43,542 INFO L225 Difference]: With dead ends: 379 [2018-02-04 12:17:43,542 INFO L226 Difference]: Without dead ends: 379 [2018-02-04 12:17:43,543 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=812, Invalid=2380, Unknown=0, NotChecked=0, Total=3192 [2018-02-04 12:17:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-02-04 12:17:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 350. [2018-02-04 12:17:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-02-04 12:17:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 404 transitions. [2018-02-04 12:17:43,545 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 404 transitions. Word has length 137 [2018-02-04 12:17:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:43,546 INFO L432 AbstractCegarLoop]: Abstraction has 350 states and 404 transitions. [2018-02-04 12:17:43,546 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-02-04 12:17:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 404 transitions. [2018-02-04 12:17:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-02-04 12:17:43,546 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:43,546 INFO L351 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:43,546 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash 681451701, now seen corresponding path program 27 times [2018-02-04 12:17:43,547 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:43,547 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:43,547 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:43,547 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:43,547 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:43,552 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:43,864 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:43,864 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:43,873 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:17:43,938 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-02-04 12:17:43,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:43,940 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:43,972 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:43,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-02-04 12:17:43,972 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-02-04 12:17:43,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-02-04 12:17:43,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=519, Unknown=0, NotChecked=0, Total=930 [2018-02-04 12:17:43,972 INFO L87 Difference]: Start difference. First operand 350 states and 404 transitions. Second operand 31 states. [2018-02-04 12:17:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:44,589 INFO L93 Difference]: Finished difference Result 392 states and 449 transitions. [2018-02-04 12:17:44,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-02-04 12:17:44,589 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 142 [2018-02-04 12:17:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:44,590 INFO L225 Difference]: With dead ends: 392 [2018-02-04 12:17:44,590 INFO L226 Difference]: Without dead ends: 392 [2018-02-04 12:17:44,591 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1221, Invalid=2085, Unknown=0, NotChecked=0, Total=3306 [2018-02-04 12:17:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-02-04 12:17:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 362. [2018-02-04 12:17:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-02-04 12:17:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 418 transitions. [2018-02-04 12:17:44,595 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 418 transitions. Word has length 142 [2018-02-04 12:17:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:44,596 INFO L432 AbstractCegarLoop]: Abstraction has 362 states and 418 transitions. [2018-02-04 12:17:44,596 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-02-04 12:17:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 418 transitions. [2018-02-04 12:17:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-02-04 12:17:44,597 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:44,597 INFO L351 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:44,597 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1555157982, now seen corresponding path program 28 times [2018-02-04 12:17:44,597 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:44,598 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:44,598 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:44,598 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:44,598 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:44,607 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:44,967 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:44,967 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:44,979 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:17:44,996 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:17:44,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:44,998 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:45,310 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:45,310 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 60 [2018-02-04 12:17:45,310 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-02-04 12:17:45,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-02-04 12:17:45,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=2790, Unknown=0, NotChecked=0, Total=3660 [2018-02-04 12:17:45,311 INFO L87 Difference]: Start difference. First operand 362 states and 418 transitions. Second operand 61 states. [2018-02-04 12:17:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:47,901 INFO L93 Difference]: Finished difference Result 405 states and 464 transitions. [2018-02-04 12:17:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-02-04 12:17:47,901 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 147 [2018-02-04 12:17:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:47,902 INFO L225 Difference]: With dead ends: 405 [2018-02-04 12:17:47,902 INFO L226 Difference]: Without dead ends: 405 [2018-02-04 12:17:47,902 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=870, Invalid=2790, Unknown=0, NotChecked=0, Total=3660 [2018-02-04 12:17:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-02-04 12:17:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 374. [2018-02-04 12:17:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-02-04 12:17:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 432 transitions. [2018-02-04 12:17:47,907 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 432 transitions. Word has length 147 [2018-02-04 12:17:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:47,908 INFO L432 AbstractCegarLoop]: Abstraction has 374 states and 432 transitions. [2018-02-04 12:17:47,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-02-04 12:17:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 432 transitions. [2018-02-04 12:17:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-02-04 12:17:47,909 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:47,909 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:47,909 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1978446421, now seen corresponding path program 29 times [2018-02-04 12:17:47,909 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:47,909 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:47,910 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:47,910 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:47,910 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:47,919 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:48,298 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:48,299 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:48,303 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:17:48,424 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-02-04 12:17:48,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:48,427 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:48,771 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:48,772 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 61 [2018-02-04 12:17:48,772 INFO L409 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-02-04 12:17:48,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-02-04 12:17:48,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-02-04 12:17:48,773 INFO L87 Difference]: Start difference. First operand 374 states and 432 transitions. Second operand 62 states. [2018-02-04 12:17:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:51,725 INFO L93 Difference]: Finished difference Result 418 states and 479 transitions. [2018-02-04 12:17:51,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-02-04 12:17:51,726 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 152 [2018-02-04 12:17:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:51,726 INFO L225 Difference]: With dead ends: 418 [2018-02-04 12:17:51,727 INFO L226 Difference]: Without dead ends: 418 [2018-02-04 12:17:51,727 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2018-02-04 12:17:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-02-04 12:17:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 386. [2018-02-04 12:17:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-02-04 12:17:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 446 transitions. [2018-02-04 12:17:51,732 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 446 transitions. Word has length 152 [2018-02-04 12:17:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:51,732 INFO L432 AbstractCegarLoop]: Abstraction has 386 states and 446 transitions. [2018-02-04 12:17:51,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-02-04 12:17:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 446 transitions. [2018-02-04 12:17:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-02-04 12:17:51,733 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:51,733 INFO L351 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:51,733 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:51,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1344453058, now seen corresponding path program 30 times [2018-02-04 12:17:51,734 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:51,734 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:51,734 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:51,735 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:51,735 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:51,744 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:52,187 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:52,187 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:52,192 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:17:52,261 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-02-04 12:17:52,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:52,263 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:52,330 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:52,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 36 [2018-02-04 12:17:52,331 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-02-04 12:17:52,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-02-04 12:17:52,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=818, Unknown=0, NotChecked=0, Total=1332 [2018-02-04 12:17:52,331 INFO L87 Difference]: Start difference. First operand 386 states and 446 transitions. Second operand 37 states. [2018-02-04 12:17:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:53,167 INFO L93 Difference]: Finished difference Result 431 states and 494 transitions. [2018-02-04 12:17:53,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-02-04 12:17:53,168 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 157 [2018-02-04 12:17:53,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:53,169 INFO L225 Difference]: With dead ends: 431 [2018-02-04 12:17:53,169 INFO L226 Difference]: Without dead ends: 431 [2018-02-04 12:17:53,169 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1562, Invalid=2860, Unknown=0, NotChecked=0, Total=4422 [2018-02-04 12:17:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-02-04 12:17:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 398. [2018-02-04 12:17:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-02-04 12:17:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 460 transitions. [2018-02-04 12:17:53,173 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 460 transitions. Word has length 157 [2018-02-04 12:17:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:53,173 INFO L432 AbstractCegarLoop]: Abstraction has 398 states and 460 transitions. [2018-02-04 12:17:53,173 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-02-04 12:17:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 460 transitions. [2018-02-04 12:17:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-02-04 12:17:53,174 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:53,174 INFO L351 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:53,174 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1846952971, now seen corresponding path program 31 times [2018-02-04 12:17:53,174 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:53,174 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:53,175 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:53,175 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:17:53,175 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:53,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:53,488 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:53,488 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:53,493 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:53,522 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:53,846 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:53,846 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 66 [2018-02-04 12:17:53,846 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-02-04 12:17:53,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-02-04 12:17:53,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-02-04 12:17:53,847 INFO L87 Difference]: Start difference. First operand 398 states and 460 transitions. Second operand 67 states. [2018-02-04 12:17:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:17:57,163 INFO L93 Difference]: Finished difference Result 444 states and 509 transitions. [2018-02-04 12:17:57,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-02-04 12:17:57,163 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 162 [2018-02-04 12:17:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:17:57,164 INFO L225 Difference]: With dead ends: 444 [2018-02-04 12:17:57,164 INFO L226 Difference]: Without dead ends: 444 [2018-02-04 12:17:57,165 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-02-04 12:17:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2018-02-04 12:17:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 410. [2018-02-04 12:17:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-02-04 12:17:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 474 transitions. [2018-02-04 12:17:57,170 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 474 transitions. Word has length 162 [2018-02-04 12:17:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:17:57,171 INFO L432 AbstractCegarLoop]: Abstraction has 410 states and 474 transitions. [2018-02-04 12:17:57,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-02-04 12:17:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 474 transitions. [2018-02-04 12:17:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-02-04 12:17:57,172 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:17:57,172 INFO L351 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-02-04 12:17:57,173 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:17:57,173 INFO L82 PathProgramCache]: Analyzing trace with hash -156942178, now seen corresponding path program 32 times [2018-02-04 12:17:57,173 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:17:57,173 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:17:57,174 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:57,174 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:17:57,174 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:17:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:17:57,183 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:17:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:57,675 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:17:57,675 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:17:57,679 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:17:57,695 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:17:57,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:17:57,697 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:17:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:17:57,744 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:17:57,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-02-04 12:17:57,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-02-04 12:17:57,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-02-04 12:17:57,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-02-04 12:17:57,745 INFO L87 Difference]: Start difference. First operand 410 states and 474 transitions. Second operand 35 states. [2018-02-04 12:18:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:00,838 INFO L93 Difference]: Finished difference Result 457 states and 524 transitions. [2018-02-04 12:18:00,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-02-04 12:18:00,838 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 167 [2018-02-04 12:18:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:00,840 INFO L225 Difference]: With dead ends: 457 [2018-02-04 12:18:00,840 INFO L226 Difference]: Without dead ends: 457 [2018-02-04 12:18:00,840 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-02-04 12:18:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-02-04 12:18:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 422. [2018-02-04 12:18:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-02-04 12:18:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 488 transitions. [2018-02-04 12:18:00,846 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 488 transitions. Word has length 167 [2018-02-04 12:18:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:00,846 INFO L432 AbstractCegarLoop]: Abstraction has 422 states and 488 transitions. [2018-02-04 12:18:00,846 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-02-04 12:18:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 488 transitions. [2018-02-04 12:18:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-02-04 12:18:00,847 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:00,847 INFO L351 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:00,847 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1361101419, now seen corresponding path program 33 times [2018-02-04 12:18:00,848 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:00,848 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:00,848 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:00,849 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:00,849 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:00,857 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:01,640 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:01,640 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-02-04 12:18:01,650 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:01,873 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-02-04 12:18:01,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:01,876 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:01,943 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:01,943 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-02-04 12:18:01,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-02-04 12:18:01,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-02-04 12:18:01,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=732, Unknown=0, NotChecked=0, Total=1332 [2018-02-04 12:18:01,945 INFO L87 Difference]: Start difference. First operand 422 states and 488 transitions. Second operand 37 states. [2018-02-04 12:18:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:03,135 INFO L93 Difference]: Finished difference Result 470 states and 539 transitions. [2018-02-04 12:18:03,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-02-04 12:18:03,136 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 172 [2018-02-04 12:18:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:03,137 INFO L225 Difference]: With dead ends: 470 [2018-02-04 12:18:03,137 INFO L226 Difference]: Without dead ends: 470 [2018-02-04 12:18:03,137 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1788, Invalid=3042, Unknown=0, NotChecked=0, Total=4830 [2018-02-04 12:18:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2018-02-04 12:18:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 434. [2018-02-04 12:18:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-02-04 12:18:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 502 transitions. [2018-02-04 12:18:03,140 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 502 transitions. Word has length 172 [2018-02-04 12:18:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:03,140 INFO L432 AbstractCegarLoop]: Abstraction has 434 states and 502 transitions. [2018-02-04 12:18:03,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-02-04 12:18:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 502 transitions. [2018-02-04 12:18:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-02-04 12:18:03,141 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:03,141 INFO L351 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:03,141 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash -587218178, now seen corresponding path program 34 times [2018-02-04 12:18:03,141 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:03,141 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:03,142 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:03,142 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:03,142 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:03,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:03,609 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:03,610 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:03,614 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:18:03,638 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:18:03,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:03,640 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:04,081 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:04,081 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 72 [2018-02-04 12:18:04,081 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-02-04 12:18:04,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-02-04 12:18:04,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=3924, Unknown=0, NotChecked=0, Total=5256 [2018-02-04 12:18:04,083 INFO L87 Difference]: Start difference. First operand 434 states and 502 transitions. Second operand 73 states. [2018-02-04 12:18:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:08,200 INFO L93 Difference]: Finished difference Result 483 states and 554 transitions. [2018-02-04 12:18:08,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-02-04 12:18:08,200 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 177 [2018-02-04 12:18:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:08,202 INFO L225 Difference]: With dead ends: 483 [2018-02-04 12:18:08,202 INFO L226 Difference]: Without dead ends: 483 [2018-02-04 12:18:08,203 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2343 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1332, Invalid=3924, Unknown=0, NotChecked=0, Total=5256 [2018-02-04 12:18:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-02-04 12:18:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 446. [2018-02-04 12:18:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-02-04 12:18:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 516 transitions. [2018-02-04 12:18:08,206 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 516 transitions. Word has length 177 [2018-02-04 12:18:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:08,206 INFO L432 AbstractCegarLoop]: Abstraction has 446 states and 516 transitions. [2018-02-04 12:18:08,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-02-04 12:18:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 516 transitions. [2018-02-04 12:18:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-02-04 12:18:08,207 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:08,207 INFO L351 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:08,207 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash 714553141, now seen corresponding path program 35 times [2018-02-04 12:18:08,208 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:08,208 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:08,208 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:08,208 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:08,209 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:08,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:08,728 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:08,728 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-02-04 12:18:08,735 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:08,959 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-02-04 12:18:08,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:08,962 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:09,583 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:09,584 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 73 [2018-02-04 12:18:09,584 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-02-04 12:18:09,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-02-04 12:18:09,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-02-04 12:18:09,585 INFO L87 Difference]: Start difference. First operand 446 states and 516 transitions. Second operand 74 states. [2018-02-04 12:18:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:14,107 INFO L93 Difference]: Finished difference Result 496 states and 569 transitions. [2018-02-04 12:18:14,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-02-04 12:18:14,108 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 182 [2018-02-04 12:18:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:14,109 INFO L225 Difference]: With dead ends: 496 [2018-02-04 12:18:14,109 INFO L226 Difference]: Without dead ends: 496 [2018-02-04 12:18:14,109 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2451 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2018-02-04 12:18:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2018-02-04 12:18:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 458. [2018-02-04 12:18:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2018-02-04 12:18:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 530 transitions. [2018-02-04 12:18:14,113 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 530 transitions. Word has length 182 [2018-02-04 12:18:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:14,113 INFO L432 AbstractCegarLoop]: Abstraction has 458 states and 530 transitions. [2018-02-04 12:18:14,113 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-02-04 12:18:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 530 transitions. [2018-02-04 12:18:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-02-04 12:18:14,115 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:14,115 INFO L351 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:14,115 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash 325242206, now seen corresponding path program 36 times [2018-02-04 12:18:14,115 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:14,115 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:14,116 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:14,116 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:14,116 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:14,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:14,533 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:14,533 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:14,538 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:18:14,631 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-02-04 12:18:14,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:14,633 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:15,297 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:15,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 44 [2018-02-04 12:18:15,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-02-04 12:18:15,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-02-04 12:18:15,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=1244, Unknown=0, NotChecked=0, Total=1980 [2018-02-04 12:18:15,298 INFO L87 Difference]: Start difference. First operand 458 states and 530 transitions. Second operand 45 states. [2018-02-04 12:18:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:16,501 INFO L93 Difference]: Finished difference Result 509 states and 584 transitions. [2018-02-04 12:18:16,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-02-04 12:18:16,501 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 187 [2018-02-04 12:18:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:16,503 INFO L225 Difference]: With dead ends: 509 [2018-02-04 12:18:16,503 INFO L226 Difference]: Without dead ends: 509 [2018-02-04 12:18:16,503 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2205, Invalid=4275, Unknown=0, NotChecked=0, Total=6480 [2018-02-04 12:18:16,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-02-04 12:18:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 470. [2018-02-04 12:18:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2018-02-04 12:18:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 544 transitions. [2018-02-04 12:18:16,507 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 544 transitions. Word has length 187 [2018-02-04 12:18:16,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:16,507 INFO L432 AbstractCegarLoop]: Abstraction has 470 states and 544 transitions. [2018-02-04 12:18:16,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-02-04 12:18:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 544 transitions. [2018-02-04 12:18:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-02-04 12:18:16,508 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:16,509 INFO L351 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:16,509 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash 777758933, now seen corresponding path program 37 times [2018-02-04 12:18:16,509 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:16,509 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:16,509 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:16,509 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:16,510 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:16,516 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:16,927 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:16,927 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:16,932 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:18:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:16,952 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:17,369 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:17,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 78 [2018-02-04 12:18:17,369 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-02-04 12:18:17,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-02-04 12:18:17,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-02-04 12:18:17,370 INFO L87 Difference]: Start difference. First operand 470 states and 544 transitions. Second operand 79 states. [2018-02-04 12:18:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:22,067 INFO L93 Difference]: Finished difference Result 522 states and 599 transitions. [2018-02-04 12:18:22,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-02-04 12:18:22,067 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 192 [2018-02-04 12:18:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:22,069 INFO L225 Difference]: With dead ends: 522 [2018-02-04 12:18:22,069 INFO L226 Difference]: Without dead ends: 522 [2018-02-04 12:18:22,069 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-02-04 12:18:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-02-04 12:18:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 482. [2018-02-04 12:18:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-02-04 12:18:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 558 transitions. [2018-02-04 12:18:22,072 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 558 transitions. Word has length 192 [2018-02-04 12:18:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:22,072 INFO L432 AbstractCegarLoop]: Abstraction has 482 states and 558 transitions. [2018-02-04 12:18:22,072 INFO L433 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-02-04 12:18:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 558 transitions. [2018-02-04 12:18:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-02-04 12:18:22,073 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:22,073 INFO L351 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:22,073 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1362862146, now seen corresponding path program 38 times [2018-02-04 12:18:22,074 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:22,074 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:22,074 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:22,074 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:18:22,074 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:22,079 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:22,490 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:22,490 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:22,495 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:18:22,515 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:18:22,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:22,517 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:23,044 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:23,044 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 80 [2018-02-04 12:18:23,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-02-04 12:18:23,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-02-04 12:18:23,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1640, Invalid=4840, Unknown=0, NotChecked=0, Total=6480 [2018-02-04 12:18:23,045 INFO L87 Difference]: Start difference. First operand 482 states and 558 transitions. Second operand 81 states. [2018-02-04 12:18:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:27,782 INFO L93 Difference]: Finished difference Result 535 states and 614 transitions. [2018-02-04 12:18:27,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-02-04 12:18:27,782 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 197 [2018-02-04 12:18:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:27,783 INFO L225 Difference]: With dead ends: 535 [2018-02-04 12:18:27,783 INFO L226 Difference]: Without dead ends: 535 [2018-02-04 12:18:27,784 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2923 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1640, Invalid=4840, Unknown=0, NotChecked=0, Total=6480 [2018-02-04 12:18:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-02-04 12:18:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 494. [2018-02-04 12:18:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2018-02-04 12:18:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 572 transitions. [2018-02-04 12:18:27,789 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 572 transitions. Word has length 197 [2018-02-04 12:18:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:27,789 INFO L432 AbstractCegarLoop]: Abstraction has 494 states and 572 transitions. [2018-02-04 12:18:27,789 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-02-04 12:18:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 572 transitions. [2018-02-04 12:18:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-02-04 12:18:27,791 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:27,791 INFO L351 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:27,791 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1324782197, now seen corresponding path program 39 times [2018-02-04 12:18:27,791 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:27,791 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:27,792 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:27,792 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:27,792 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:27,801 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:28,304 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:28,304 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:28,309 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:18:28,500 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-02-04 12:18:28,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:28,503 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:28,562 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:28,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-02-04 12:18:28,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-02-04 12:18:28,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-02-04 12:18:28,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=981, Unknown=0, NotChecked=0, Total=1806 [2018-02-04 12:18:28,564 INFO L87 Difference]: Start difference. First operand 494 states and 572 transitions. Second operand 43 states. [2018-02-04 12:18:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:29,624 INFO L93 Difference]: Finished difference Result 548 states and 629 transitions. [2018-02-04 12:18:29,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-02-04 12:18:29,624 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 202 [2018-02-04 12:18:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:29,625 INFO L225 Difference]: With dead ends: 548 [2018-02-04 12:18:29,625 INFO L226 Difference]: Without dead ends: 548 [2018-02-04 12:18:29,625 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2463, Invalid=4179, Unknown=0, NotChecked=0, Total=6642 [2018-02-04 12:18:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2018-02-04 12:18:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 506. [2018-02-04 12:18:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2018-02-04 12:18:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 586 transitions. [2018-02-04 12:18:29,629 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 586 transitions. Word has length 202 [2018-02-04 12:18:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:29,629 INFO L432 AbstractCegarLoop]: Abstraction has 506 states and 586 transitions. [2018-02-04 12:18:29,629 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-02-04 12:18:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 586 transitions. [2018-02-04 12:18:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-02-04 12:18:29,630 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:29,631 INFO L351 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:29,631 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:29,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2003142114, now seen corresponding path program 40 times [2018-02-04 12:18:29,631 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:29,631 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:29,632 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:29,632 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:29,632 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:29,641 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:30,166 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:30,166 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:30,170 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:18:30,197 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:18:30,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:30,199 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:30,855 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:30,855 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 84 [2018-02-04 12:18:30,855 INFO L409 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-02-04 12:18:30,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-02-04 12:18:30,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1554, Invalid=5586, Unknown=0, NotChecked=0, Total=7140 [2018-02-04 12:18:30,856 INFO L87 Difference]: Start difference. First operand 506 states and 586 transitions. Second operand 85 states. [2018-02-04 12:18:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:35,552 INFO L93 Difference]: Finished difference Result 561 states and 644 transitions. [2018-02-04 12:18:35,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-02-04 12:18:35,552 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 207 [2018-02-04 12:18:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:35,554 INFO L225 Difference]: With dead ends: 561 [2018-02-04 12:18:35,554 INFO L226 Difference]: Without dead ends: 561 [2018-02-04 12:18:35,555 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1554, Invalid=5586, Unknown=0, NotChecked=0, Total=7140 [2018-02-04 12:18:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2018-02-04 12:18:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 518. [2018-02-04 12:18:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2018-02-04 12:18:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 600 transitions. [2018-02-04 12:18:35,560 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 600 transitions. Word has length 207 [2018-02-04 12:18:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:35,561 INFO L432 AbstractCegarLoop]: Abstraction has 518 states and 600 transitions. [2018-02-04 12:18:35,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-02-04 12:18:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 600 transitions. [2018-02-04 12:18:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-02-04 12:18:35,562 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:35,562 INFO L351 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:35,562 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash 749859861, now seen corresponding path program 41 times [2018-02-04 12:18:35,563 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:35,563 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:35,563 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:35,563 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:35,564 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:35,571 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:36,081 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:36,081 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:36,086 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:18:36,470 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-02-04 12:18:36,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:36,474 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:37,088 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:37,089 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 85 [2018-02-04 12:18:37,089 INFO L409 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-02-04 12:18:37,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-02-04 12:18:37,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-02-04 12:18:37,090 INFO L87 Difference]: Start difference. First operand 518 states and 600 transitions. Second operand 86 states. [2018-02-04 12:18:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:43,798 INFO L93 Difference]: Finished difference Result 574 states and 659 transitions. [2018-02-04 12:18:43,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-02-04 12:18:43,798 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 212 [2018-02-04 12:18:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:43,799 INFO L225 Difference]: With dead ends: 574 [2018-02-04 12:18:43,799 INFO L226 Difference]: Without dead ends: 574 [2018-02-04 12:18:43,799 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3363 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2018-02-04 12:18:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2018-02-04 12:18:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 530. [2018-02-04 12:18:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-02-04 12:18:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 614 transitions. [2018-02-04 12:18:43,803 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 614 transitions. Word has length 212 [2018-02-04 12:18:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:43,803 INFO L432 AbstractCegarLoop]: Abstraction has 530 states and 614 transitions. [2018-02-04 12:18:43,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-02-04 12:18:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 614 transitions. [2018-02-04 12:18:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-02-04 12:18:43,803 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:43,804 INFO L351 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:43,804 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:43,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1629807490, now seen corresponding path program 42 times [2018-02-04 12:18:43,804 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:43,804 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:43,804 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:43,804 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:43,804 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:43,810 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:44,389 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:44,389 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:44,395 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:18:44,540 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-02-04 12:18:44,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:44,543 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:44,656 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:44,656 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 48 [2018-02-04 12:18:44,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-02-04 12:18:44,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-02-04 12:18:44,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=1388, Unknown=0, NotChecked=0, Total=2352 [2018-02-04 12:18:44,657 INFO L87 Difference]: Start difference. First operand 530 states and 614 transitions. Second operand 49 states. [2018-02-04 12:18:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:45,900 INFO L93 Difference]: Finished difference Result 587 states and 674 transitions. [2018-02-04 12:18:45,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-02-04 12:18:45,901 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 217 [2018-02-04 12:18:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:45,902 INFO L225 Difference]: With dead ends: 587 [2018-02-04 12:18:45,902 INFO L226 Difference]: Without dead ends: 587 [2018-02-04 12:18:45,902 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2936, Invalid=5254, Unknown=0, NotChecked=0, Total=8190 [2018-02-04 12:18:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-02-04 12:18:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 542. [2018-02-04 12:18:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2018-02-04 12:18:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 628 transitions. [2018-02-04 12:18:45,906 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 628 transitions. Word has length 217 [2018-02-04 12:18:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:45,906 INFO L432 AbstractCegarLoop]: Abstraction has 542 states and 628 transitions. [2018-02-04 12:18:45,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-02-04 12:18:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 628 transitions. [2018-02-04 12:18:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-02-04 12:18:45,907 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:45,907 INFO L351 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:45,907 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash 324521397, now seen corresponding path program 43 times [2018-02-04 12:18:45,907 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:45,907 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:45,908 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:45,908 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:45,908 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:45,913 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:46,516 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:46,516 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:46,521 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:18:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:46,543 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:47,096 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:47,097 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 90 [2018-02-04 12:18:47,097 INFO L409 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-02-04 12:18:47,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-02-04 12:18:47,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2018-02-04 12:18:47,098 INFO L87 Difference]: Start difference. First operand 542 states and 628 transitions. Second operand 91 states. [2018-02-04 12:18:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:50,974 INFO L93 Difference]: Finished difference Result 600 states and 689 transitions. [2018-02-04 12:18:50,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-02-04 12:18:50,975 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 222 [2018-02-04 12:18:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:50,976 INFO L225 Difference]: With dead ends: 600 [2018-02-04 12:18:50,976 INFO L226 Difference]: Without dead ends: 600 [2018-02-04 12:18:50,976 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2018-02-04 12:18:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2018-02-04 12:18:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 554. [2018-02-04 12:18:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-02-04 12:18:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 642 transitions. [2018-02-04 12:18:50,980 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 642 transitions. Word has length 222 [2018-02-04 12:18:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:50,980 INFO L432 AbstractCegarLoop]: Abstraction has 554 states and 642 transitions. [2018-02-04 12:18:50,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-02-04 12:18:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 642 transitions. [2018-02-04 12:18:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-02-04 12:18:50,981 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:50,981 INFO L351 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:50,981 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1945913054, now seen corresponding path program 44 times [2018-02-04 12:18:50,981 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:50,981 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:50,981 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:50,981 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:18:50,982 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:50,988 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:51,527 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:51,527 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:51,532 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:18:51,553 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:18:51,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:51,556 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:52,144 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:52,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 92 [2018-02-04 12:18:52,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-02-04 12:18:52,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-02-04 12:18:52,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2070, Invalid=6486, Unknown=0, NotChecked=0, Total=8556 [2018-02-04 12:18:52,146 INFO L87 Difference]: Start difference. First operand 554 states and 642 transitions. Second operand 93 states. [2018-02-04 12:18:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:56,549 INFO L93 Difference]: Finished difference Result 613 states and 704 transitions. [2018-02-04 12:18:56,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-02-04 12:18:56,549 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 227 [2018-02-04 12:18:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:56,550 INFO L225 Difference]: With dead ends: 613 [2018-02-04 12:18:56,550 INFO L226 Difference]: Without dead ends: 613 [2018-02-04 12:18:56,551 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2070, Invalid=6486, Unknown=0, NotChecked=0, Total=8556 [2018-02-04 12:18:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2018-02-04 12:18:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 566. [2018-02-04 12:18:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2018-02-04 12:18:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 656 transitions. [2018-02-04 12:18:56,555 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 656 transitions. Word has length 227 [2018-02-04 12:18:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:56,555 INFO L432 AbstractCegarLoop]: Abstraction has 566 states and 656 transitions. [2018-02-04 12:18:56,555 INFO L433 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-02-04 12:18:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 656 transitions. [2018-02-04 12:18:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-02-04 12:18:56,556 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:56,556 INFO L351 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:56,556 INFO L371 AbstractCegarLoop]: === Iteration 46 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1707991211, now seen corresponding path program 45 times [2018-02-04 12:18:56,556 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:56,556 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:56,556 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:56,556 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:56,556 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:56,562 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:57,178 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:57,178 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:57,183 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:18:57,481 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-02-04 12:18:57,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:57,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:18:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:57,531 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:18:57,531 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-02-04 12:18:57,531 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-02-04 12:18:57,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-02-04 12:18:57,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=1266, Unknown=0, NotChecked=0, Total=2352 [2018-02-04 12:18:57,531 INFO L87 Difference]: Start difference. First operand 566 states and 656 transitions. Second operand 49 states. [2018-02-04 12:18:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:18:58,857 INFO L93 Difference]: Finished difference Result 626 states and 719 transitions. [2018-02-04 12:18:58,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-02-04 12:18:58,857 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 232 [2018-02-04 12:18:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:18:58,858 INFO L225 Difference]: With dead ends: 626 [2018-02-04 12:18:58,858 INFO L226 Difference]: Without dead ends: 626 [2018-02-04 12:18:58,859 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3246, Invalid=5496, Unknown=0, NotChecked=0, Total=8742 [2018-02-04 12:18:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2018-02-04 12:18:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 578. [2018-02-04 12:18:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2018-02-04 12:18:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 670 transitions. [2018-02-04 12:18:58,863 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 670 transitions. Word has length 232 [2018-02-04 12:18:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:18:58,863 INFO L432 AbstractCegarLoop]: Abstraction has 578 states and 670 transitions. [2018-02-04 12:18:58,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-02-04 12:18:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 670 transitions. [2018-02-04 12:18:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-02-04 12:18:58,864 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:18:58,864 INFO L351 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-02-04 12:18:58,864 INFO L371 AbstractCegarLoop]: === Iteration 47 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:18:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1861482814, now seen corresponding path program 46 times [2018-02-04 12:18:58,864 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:18:58,864 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:18:58,864 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:58,865 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:18:58,865 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:18:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:18:58,871 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:18:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:18:59,454 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:18:59,454 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:18:59,459 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:18:59,484 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:18:59,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:18:59,486 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:00,268 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:00,268 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 96 [2018-02-04 12:19:00,268 INFO L409 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-02-04 12:19:00,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-02-04 12:19:00,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2352, Invalid=6960, Unknown=0, NotChecked=0, Total=9312 [2018-02-04 12:19:00,269 INFO L87 Difference]: Start difference. First operand 578 states and 670 transitions. Second operand 97 states. [2018-02-04 12:19:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:05,056 INFO L93 Difference]: Finished difference Result 639 states and 734 transitions. [2018-02-04 12:19:05,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-02-04 12:19:05,056 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 237 [2018-02-04 12:19:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:05,057 INFO L225 Difference]: With dead ends: 639 [2018-02-04 12:19:05,057 INFO L226 Difference]: Without dead ends: 639 [2018-02-04 12:19:05,058 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2352, Invalid=6960, Unknown=0, NotChecked=0, Total=9312 [2018-02-04 12:19:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-02-04 12:19:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 590. [2018-02-04 12:19:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2018-02-04 12:19:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 684 transitions. [2018-02-04 12:19:05,061 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 684 transitions. Word has length 237 [2018-02-04 12:19:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:05,062 INFO L432 AbstractCegarLoop]: Abstraction has 590 states and 684 transitions. [2018-02-04 12:19:05,062 INFO L433 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-02-04 12:19:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 684 transitions. [2018-02-04 12:19:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-02-04 12:19:05,063 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:05,063 INFO L351 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:05,063 INFO L371 AbstractCegarLoop]: === Iteration 48 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1141565685, now seen corresponding path program 47 times [2018-02-04 12:19:05,063 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:05,063 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:05,063 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:05,063 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:05,063 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:05,070 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:05,686 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:05,686 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:05,691 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:19:06,290 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-02-04 12:19:06,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:06,294 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:07,046 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:07,046 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 97 [2018-02-04 12:19:07,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-02-04 12:19:07,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-02-04 12:19:07,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-02-04 12:19:07,048 INFO L87 Difference]: Start difference. First operand 590 states and 684 transitions. Second operand 98 states. [2018-02-04 12:19:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:12,738 INFO L93 Difference]: Finished difference Result 652 states and 749 transitions. [2018-02-04 12:19:12,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-02-04 12:19:12,738 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 242 [2018-02-04 12:19:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:12,739 INFO L225 Difference]: With dead ends: 652 [2018-02-04 12:19:12,739 INFO L226 Difference]: Without dead ends: 652 [2018-02-04 12:19:12,740 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4419 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2499, Invalid=7203, Unknown=0, NotChecked=0, Total=9702 [2018-02-04 12:19:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-02-04 12:19:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 602. [2018-02-04 12:19:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-02-04 12:19:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 698 transitions. [2018-02-04 12:19:12,744 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 698 transitions. Word has length 242 [2018-02-04 12:19:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:12,744 INFO L432 AbstractCegarLoop]: Abstraction has 602 states and 698 transitions. [2018-02-04 12:19:12,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-02-04 12:19:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 698 transitions. [2018-02-04 12:19:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-02-04 12:19:12,745 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:12,745 INFO L351 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:12,745 INFO L371 AbstractCegarLoop]: === Iteration 49 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash 993538974, now seen corresponding path program 48 times [2018-02-04 12:19:12,745 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:12,745 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:12,745 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:12,745 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:12,746 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:12,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:13,356 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:13,356 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:13,361 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:19:13,557 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-02-04 12:19:13,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:13,560 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:14,044 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:14,044 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 68 [2018-02-04 12:19:14,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-02-04 12:19:14,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-02-04 12:19:14,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1432, Invalid=3260, Unknown=0, NotChecked=0, Total=4692 [2018-02-04 12:19:14,045 INFO L87 Difference]: Start difference. First operand 602 states and 698 transitions. Second operand 69 states. [2018-02-04 12:19:17,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:17,157 INFO L93 Difference]: Finished difference Result 665 states and 764 transitions. [2018-02-04 12:19:17,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-02-04 12:19:17,157 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 247 [2018-02-04 12:19:17,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:17,159 INFO L225 Difference]: With dead ends: 665 [2018-02-04 12:19:17,159 INFO L226 Difference]: Without dead ends: 665 [2018-02-04 12:19:17,159 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3855, Invalid=9717, Unknown=0, NotChecked=0, Total=13572 [2018-02-04 12:19:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2018-02-04 12:19:17,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 614. [2018-02-04 12:19:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2018-02-04 12:19:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 712 transitions. [2018-02-04 12:19:17,163 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 712 transitions. Word has length 247 [2018-02-04 12:19:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:17,163 INFO L432 AbstractCegarLoop]: Abstraction has 614 states and 712 transitions. [2018-02-04 12:19:17,164 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-02-04 12:19:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 712 transitions. [2018-02-04 12:19:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-02-04 12:19:17,164 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:17,164 INFO L351 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:17,164 INFO L371 AbstractCegarLoop]: === Iteration 50 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash 522988181, now seen corresponding path program 49 times [2018-02-04 12:19:17,165 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:17,165 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:17,165 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:17,165 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:17,165 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:17,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:17,868 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:17,868 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:17,873 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:19:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:17,898 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:18,539 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:18,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 102 [2018-02-04 12:19:18,539 INFO L409 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-02-04 12:19:18,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-02-04 12:19:18,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=7803, Unknown=0, NotChecked=0, Total=10506 [2018-02-04 12:19:18,540 INFO L87 Difference]: Start difference. First operand 614 states and 712 transitions. Second operand 103 states. [2018-02-04 12:19:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:24,128 INFO L93 Difference]: Finished difference Result 678 states and 779 transitions. [2018-02-04 12:19:24,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-02-04 12:19:24,128 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 252 [2018-02-04 12:19:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:24,130 INFO L225 Difference]: With dead ends: 678 [2018-02-04 12:19:24,130 INFO L226 Difference]: Without dead ends: 678 [2018-02-04 12:19:24,131 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4899 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2703, Invalid=7803, Unknown=0, NotChecked=0, Total=10506 [2018-02-04 12:19:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2018-02-04 12:19:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 626. [2018-02-04 12:19:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2018-02-04 12:19:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 726 transitions. [2018-02-04 12:19:24,137 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 726 transitions. Word has length 252 [2018-02-04 12:19:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:24,138 INFO L432 AbstractCegarLoop]: Abstraction has 626 states and 726 transitions. [2018-02-04 12:19:24,138 INFO L433 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-02-04 12:19:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 726 transitions. [2018-02-04 12:19:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-02-04 12:19:24,139 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:24,139 INFO L351 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:24,139 INFO L371 AbstractCegarLoop]: === Iteration 51 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:24,139 INFO L82 PathProgramCache]: Analyzing trace with hash 683603454, now seen corresponding path program 50 times [2018-02-04 12:19:24,139 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:24,139 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:24,140 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:24,140 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:19:24,140 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:24,148 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:24,916 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:24,916 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:24,922 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:19:24,956 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:19:24,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:24,959 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:25,666 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:25,667 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 104 [2018-02-04 12:19:25,667 INFO L409 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-02-04 12:19:25,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-02-04 12:19:25,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2756, Invalid=8164, Unknown=0, NotChecked=0, Total=10920 [2018-02-04 12:19:25,668 INFO L87 Difference]: Start difference. First operand 626 states and 726 transitions. Second operand 105 states. [2018-02-04 12:19:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:32,934 INFO L93 Difference]: Finished difference Result 691 states and 794 transitions. [2018-02-04 12:19:32,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-02-04 12:19:32,935 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 257 [2018-02-04 12:19:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:32,936 INFO L225 Difference]: With dead ends: 691 [2018-02-04 12:19:32,936 INFO L226 Difference]: Without dead ends: 691 [2018-02-04 12:19:32,936 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5047 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2756, Invalid=8164, Unknown=0, NotChecked=0, Total=10920 [2018-02-04 12:19:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2018-02-04 12:19:32,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 638. [2018-02-04 12:19:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2018-02-04 12:19:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 740 transitions. [2018-02-04 12:19:32,940 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 740 transitions. Word has length 257 [2018-02-04 12:19:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:32,940 INFO L432 AbstractCegarLoop]: Abstraction has 638 states and 740 transitions. [2018-02-04 12:19:32,940 INFO L433 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-02-04 12:19:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 740 transitions. [2018-02-04 12:19:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-02-04 12:19:32,941 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:32,941 INFO L351 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:32,941 INFO L371 AbstractCegarLoop]: === Iteration 52 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:32,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1700783157, now seen corresponding path program 51 times [2018-02-04 12:19:32,942 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:32,942 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:32,942 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:32,942 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:32,942 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:32,948 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:33,653 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:33,653 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:33,658 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:19:34,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-02-04 12:19:34,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:34,125 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:34,189 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:34,189 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-02-04 12:19:34,190 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-02-04 12:19:34,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-02-04 12:19:34,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=1587, Unknown=0, NotChecked=0, Total=2970 [2018-02-04 12:19:34,191 INFO L87 Difference]: Start difference. First operand 638 states and 740 transitions. Second operand 55 states. [2018-02-04 12:19:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:35,941 INFO L93 Difference]: Finished difference Result 704 states and 809 transitions. [2018-02-04 12:19:35,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-02-04 12:19:35,941 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 262 [2018-02-04 12:19:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:35,942 INFO L225 Difference]: With dead ends: 704 [2018-02-04 12:19:35,942 INFO L226 Difference]: Without dead ends: 704 [2018-02-04 12:19:35,943 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4137, Invalid=6993, Unknown=0, NotChecked=0, Total=11130 [2018-02-04 12:19:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-02-04 12:19:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 650. [2018-02-04 12:19:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2018-02-04 12:19:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 754 transitions. [2018-02-04 12:19:35,947 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 754 transitions. Word has length 262 [2018-02-04 12:19:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:35,947 INFO L432 AbstractCegarLoop]: Abstraction has 650 states and 754 transitions. [2018-02-04 12:19:35,947 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-02-04 12:19:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 754 transitions. [2018-02-04 12:19:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-02-04 12:19:35,948 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:35,948 INFO L351 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:35,948 INFO L371 AbstractCegarLoop]: === Iteration 53 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1946271650, now seen corresponding path program 52 times [2018-02-04 12:19:35,949 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:35,949 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:35,949 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:35,949 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:35,949 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:35,956 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:36,784 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:36,784 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:36,790 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-04 12:19:36,819 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-04 12:19:36,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:36,822 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:37,742 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:37,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 108 [2018-02-04 12:19:37,742 INFO L409 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-02-04 12:19:37,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-02-04 12:19:37,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2862, Invalid=8910, Unknown=0, NotChecked=0, Total=11772 [2018-02-04 12:19:37,743 INFO L87 Difference]: Start difference. First operand 650 states and 754 transitions. Second operand 109 states. [2018-02-04 12:19:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:43,943 INFO L93 Difference]: Finished difference Result 717 states and 824 transitions. [2018-02-04 12:19:44,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-02-04 12:19:44,041 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 267 [2018-02-04 12:19:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:44,042 INFO L225 Difference]: With dead ends: 717 [2018-02-04 12:19:44,042 INFO L226 Difference]: Without dead ends: 717 [2018-02-04 12:19:44,043 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5346 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2862, Invalid=8910, Unknown=0, NotChecked=0, Total=11772 [2018-02-04 12:19:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-02-04 12:19:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 662. [2018-02-04 12:19:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2018-02-04 12:19:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 768 transitions. [2018-02-04 12:19:44,046 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 768 transitions. Word has length 267 [2018-02-04 12:19:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:44,046 INFO L432 AbstractCegarLoop]: Abstraction has 662 states and 768 transitions. [2018-02-04 12:19:44,046 INFO L433 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-02-04 12:19:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 768 transitions. [2018-02-04 12:19:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-02-04 12:19:44,047 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:44,047 INFO L351 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:44,047 INFO L371 AbstractCegarLoop]: === Iteration 54 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash 468719061, now seen corresponding path program 53 times [2018-02-04 12:19:44,048 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:44,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:44,048 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:44,048 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:44,048 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:44,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:44,914 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:44,914 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:44,919 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-04 12:19:45,866 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-02-04 12:19:45,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:45,870 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:46,783 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:46,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 109 [2018-02-04 12:19:46,783 INFO L409 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-02-04 12:19:46,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-02-04 12:19:46,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-02-04 12:19:46,784 INFO L87 Difference]: Start difference. First operand 662 states and 768 transitions. Second operand 110 states. [2018-02-04 12:19:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:53,439 INFO L93 Difference]: Finished difference Result 730 states and 839 transitions. [2018-02-04 12:19:53,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-02-04 12:19:53,439 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 272 [2018-02-04 12:19:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:53,440 INFO L225 Difference]: With dead ends: 730 [2018-02-04 12:19:53,440 INFO L226 Difference]: Without dead ends: 730 [2018-02-04 12:19:53,441 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5619 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3135, Invalid=9075, Unknown=0, NotChecked=0, Total=12210 [2018-02-04 12:19:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2018-02-04 12:19:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 674. [2018-02-04 12:19:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2018-02-04 12:19:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 782 transitions. [2018-02-04 12:19:53,445 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 782 transitions. Word has length 272 [2018-02-04 12:19:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:53,445 INFO L432 AbstractCegarLoop]: Abstraction has 674 states and 782 transitions. [2018-02-04 12:19:53,446 INFO L433 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-02-04 12:19:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 782 transitions. [2018-02-04 12:19:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-02-04 12:19:53,447 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:53,447 INFO L351 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:53,447 INFO L371 AbstractCegarLoop]: === Iteration 55 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash 502010558, now seen corresponding path program 54 times [2018-02-04 12:19:53,447 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:53,447 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:53,448 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:53,448 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:53,448 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:53,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:54,249 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:54,250 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:54,254 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-04 12:19:54,559 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-02-04 12:19:54,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:19:54,585 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:54,689 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:54,689 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 60 [2018-02-04 12:19:54,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-02-04 12:19:54,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-02-04 12:19:54,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=2102, Unknown=0, NotChecked=0, Total=3660 [2018-02-04 12:19:54,690 INFO L87 Difference]: Start difference. First operand 674 states and 782 transitions. Second operand 61 states. [2018-02-04 12:19:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:19:56,509 INFO L93 Difference]: Finished difference Result 743 states and 854 transitions. [2018-02-04 12:19:56,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-02-04 12:19:56,509 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 277 [2018-02-04 12:19:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:19:56,510 INFO L225 Difference]: With dead ends: 743 [2018-02-04 12:19:56,511 INFO L226 Difference]: Without dead ends: 743 [2018-02-04 12:19:56,511 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4742, Invalid=8368, Unknown=0, NotChecked=0, Total=13110 [2018-02-04 12:19:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-02-04 12:19:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 686. [2018-02-04 12:19:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-02-04 12:19:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 796 transitions. [2018-02-04 12:19:56,515 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 796 transitions. Word has length 277 [2018-02-04 12:19:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:19:56,515 INFO L432 AbstractCegarLoop]: Abstraction has 686 states and 796 transitions. [2018-02-04 12:19:56,515 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-02-04 12:19:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 796 transitions. [2018-02-04 12:19:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-02-04 12:19:56,516 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:19:56,516 INFO L351 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-02-04 12:19:56,516 INFO L371 AbstractCegarLoop]: === Iteration 56 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:19:56,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1280917643, now seen corresponding path program 55 times [2018-02-04 12:19:56,516 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:19:56,516 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:19:56,516 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:56,517 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:19:56,517 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:19:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:56,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:19:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:57,361 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:19:57,361 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:19:57,366 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:19:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:19:57,394 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:19:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:19:58,163 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:19:58,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 114 [2018-02-04 12:19:58,164 INFO L409 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-02-04 12:19:58,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-02-04 12:19:58,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3363, Invalid=9747, Unknown=0, NotChecked=0, Total=13110 [2018-02-04 12:19:58,165 INFO L87 Difference]: Start difference. First operand 686 states and 796 transitions. Second operand 115 states. [2018-02-04 12:20:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:20:05,888 INFO L93 Difference]: Finished difference Result 756 states and 869 transitions. [2018-02-04 12:20:05,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-02-04 12:20:05,888 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 282 [2018-02-04 12:20:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:20:05,889 INFO L225 Difference]: With dead ends: 756 [2018-02-04 12:20:05,889 INFO L226 Difference]: Without dead ends: 756 [2018-02-04 12:20:05,890 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3363, Invalid=9747, Unknown=0, NotChecked=0, Total=13110 [2018-02-04 12:20:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-02-04 12:20:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 698. [2018-02-04 12:20:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-02-04 12:20:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 810 transitions. [2018-02-04 12:20:05,893 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 810 transitions. Word has length 282 [2018-02-04 12:20:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:20:05,894 INFO L432 AbstractCegarLoop]: Abstraction has 698 states and 810 transitions. [2018-02-04 12:20:05,894 INFO L433 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-02-04 12:20:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 810 transitions. [2018-02-04 12:20:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-02-04 12:20:05,894 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:20:05,895 INFO L351 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-02-04 12:20:05,895 INFO L371 AbstractCegarLoop]: === Iteration 57 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:20:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1543400734, now seen corresponding path program 56 times [2018-02-04 12:20:05,895 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:20:05,895 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:20:05,895 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:20:05,895 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:20:05,895 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:20:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:20:05,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:20:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:20:06,755 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:20:06,755 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:20:06,760 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:20:06,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:20:06,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:20:06,792 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:20:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:20:07,791 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:20:07,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 116 [2018-02-04 12:20:07,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-02-04 12:20:07,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-02-04 12:20:07,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3074, Invalid=10498, Unknown=0, NotChecked=0, Total=13572 [2018-02-04 12:20:07,793 INFO L87 Difference]: Start difference. First operand 698 states and 810 transitions. Second operand 117 states. [2018-02-04 12:20:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:20:12,618 INFO L93 Difference]: Finished difference Result 769 states and 884 transitions. [2018-02-04 12:20:12,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-02-04 12:20:12,618 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 287 [2018-02-04 12:20:12,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:20:12,619 INFO L225 Difference]: With dead ends: 769 [2018-02-04 12:20:12,619 INFO L226 Difference]: Without dead ends: 769 [2018-02-04 12:20:12,620 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5956 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3074, Invalid=10498, Unknown=0, NotChecked=0, Total=13572 [2018-02-04 12:20:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2018-02-04 12:20:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 710. [2018-02-04 12:20:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2018-02-04 12:20:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 824 transitions. [2018-02-04 12:20:12,624 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 824 transitions. Word has length 287 [2018-02-04 12:20:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:20:12,625 INFO L432 AbstractCegarLoop]: Abstraction has 710 states and 824 transitions. [2018-02-04 12:20:12,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-02-04 12:20:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 824 transitions. [2018-02-04 12:20:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-02-04 12:20:12,626 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:20:12,627 INFO L351 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-02-04 12:20:12,627 INFO L371 AbstractCegarLoop]: === Iteration 58 === [mainErr0AssertViolation, mainErr2AssertViolation, mainErr5AssertViolation, mainErr4AssertViolation, mainErr3AssertViolation, mainErr1AssertViolation]=== [2018-02-04 12:20:12,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1462902507, now seen corresponding path program 57 times [2018-02-04 12:20:12,627 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:20:12,627 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:20:12,627 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:20:12,628 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 12:20:12,628 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:20:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:20:12,639 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:20:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:20:13,526 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:20:13,526 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 12:20:13,531 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 12:20:14,197 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-02-04 12:20:14,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:20:14,200 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:20:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:20:14,259 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:20:14,259 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-02-04 12:20:14,259 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-02-04 12:20:14,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-02-04 12:20:14,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2018-02-04 12:20:14,260 INFO L87 Difference]: Start difference. First operand 710 states and 824 transitions. Second operand 61 states. Received shutdown request... [2018-02-04 12:20:15,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-02-04 12:20:15,981 WARN L491 AbstractCegarLoop]: Verification canceled [2018-02-04 12:20:15,985 WARN L185 ceAbstractionStarter]: Timeout [2018-02-04 12:20:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 12:20:15 BoogieIcfgContainer [2018-02-04 12:20:15,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 12:20:15,986 INFO L168 Benchmark]: Toolchain (without parser) took 177879.04 ms. Allocated memory was 399.5 MB in the beginning and 1.1 GB in the end (delta: 739.8 MB). Free memory was 357.4 MB in the beginning and 630.5 MB in the end (delta: -273.1 MB). Peak memory consumption was 466.7 MB. Max. memory is 5.3 GB. [2018-02-04 12:20:15,986 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 399.5 MB. Free memory is still 362.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 12:20:15,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.59 ms. Allocated memory is still 399.5 MB. Free memory was 357.4 MB in the beginning and 349.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-02-04 12:20:15,987 INFO L168 Benchmark]: Boogie Preprocessor took 16.50 ms. Allocated memory is still 399.5 MB. Free memory was 349.3 MB in the beginning and 348.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 12:20:15,987 INFO L168 Benchmark]: RCFGBuilder took 136.32 ms. Allocated memory is still 399.5 MB. Free memory was 348.0 MB in the beginning and 334.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 12:20:15,987 INFO L168 Benchmark]: TraceAbstraction took 177592.75 ms. Allocated memory was 399.5 MB in the beginning and 1.1 GB in the end (delta: 739.8 MB). Free memory was 334.8 MB in the beginning and 630.5 MB in the end (delta: -295.7 MB). Peak memory consumption was 444.0 MB. Max. memory is 5.3 GB. [2018-02-04 12:20:15,988 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 399.5 MB. Free memory is still 362.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 130.59 ms. Allocated memory is still 399.5 MB. Free memory was 357.4 MB in the beginning and 349.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 16.50 ms. Allocated memory is still 399.5 MB. Free memory was 349.3 MB in the beginning and 348.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 136.32 ms. Allocated memory is still 399.5 MB. Free memory was 348.0 MB in the beginning and 334.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 177592.75 ms. Allocated memory was 399.5 MB in the beginning and 1.1 GB in the end (delta: 739.8 MB). Free memory was 334.8 MB in the beginning and 630.5 MB in the end (delta: -295.7 MB). Peak memory consumption was 444.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 7). Cancelled while BasicCegarLoop was constructing difference of abstraction (710states) and interpolant automaton (currently 60 states, 61 states before enhancement), while ReachableStatesComputation was computing reachable states (736 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was constructing difference of abstraction (710states) and interpolant automaton (currently 60 states, 61 states before enhancement), while ReachableStatesComputation was computing reachable states (736 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (710states) and interpolant automaton (currently 60 states, 61 states before enhancement), while ReachableStatesComputation was computing reachable states (736 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (710states) and interpolant automaton (currently 60 states, 61 states before enhancement), while ReachableStatesComputation was computing reachable states (736 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (710states) and interpolant automaton (currently 60 states, 61 states before enhancement), while ReachableStatesComputation was computing reachable states (736 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was constructing difference of abstraction (710states) and interpolant automaton (currently 60 states, 61 states before enhancement), while ReachableStatesComputation was computing reachable states (736 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 6 error locations. TIMEOUT Result, 177.5s OverallTime, 58 OverallIterations, 58 TraceHistogramMax, 132.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7349 SDtfs, 52049 SDslu, 151901 SDs, 0 SdLazy, 547233 SolverSat, 18844 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11006 GetRequests, 7566 SyntacticMatches, 6 SemanticMatches, 3434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92991 ImplicationChecksByTransitivity, 38.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=710occurred in iteration=57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 57 MinimizatonAttempts, 1767 StatesRemovedByMinimization, 57 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 17335 NumberOfCodeBlocks, 17335 NumberOfCodeBlocksAsserted, 965 NumberOfCheckSat, 17220 ConstructedInterpolants, 0 QuantifiedInterpolants, 11735202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18981 ConjunctsInSsa, 2926 ConjunctsInUnsatCore, 115 InterpolantComputations, 1 PerfectInterpolantSequences, 0/315172 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_original_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_12-20-15-994.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_original_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_12-20-15-994.csv Completed graceful shutdown