java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:44:29,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:44:29,802 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:44:29,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:44:29,813 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:44:29,814 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:44:29,816 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:44:29,817 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:44:29,820 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:44:29,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:44:29,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 21:44:29,867 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-26 21:44:29,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:44:29,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:44:29,902 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:44:29,902 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:44:29,903 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:44:29,903 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:44:29,903 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:44:29,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:44:29,904 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:44:29,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:44:29,904 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:44:29,904 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:44:29,904 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:44:29,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:44:29,905 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:44:29,905 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:44:29,905 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:44:29,905 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:44:29,906 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:44:29,906 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:44:29,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:44:29,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:44:29,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:44:29,907 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:44:29,907 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:44:29,907 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:44:29,907 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:44:29,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:44:29,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:44:29,908 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:44:29,908 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:44:29,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:44:29,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:44:30,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:44:30,003 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:44:30,004 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:44:30,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-26 21:44:30,005 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-09-26 21:44:30,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:44:30,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:44:30,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:44:30,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:44:30,072 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:44:30,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:44:30,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:44:30,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:44:30,114 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:44:30,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... [2018-09-26 21:44:30,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:44:30,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:44:30,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:44:30,140 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:44:30,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/1) ... No working directory specified, using /storage/repos/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 [2018-09-26 21:44:30,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-26 21:44:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 21:44:30,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 21:44:30,547 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 21:44:30,548 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:44:30 BoogieIcfgContainer [2018-09-26 21:44:30,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:44:30,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:44:30,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:44:30,553 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:44:30,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:44:30" (1/2) ... [2018-09-26 21:44:30,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452ccd04 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:44:30, skipping insertion in model container [2018-09-26 21:44:30,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:44:30" (2/2) ... [2018-09-26 21:44:30,557 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-26 21:44:30,568 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:44:30,577 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:44:30,633 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:44:30,634 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:44:30,634 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:44:30,634 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:44:30,634 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:44:30,634 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:44:30,635 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:44:30,635 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:44:30,635 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:44:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-26 21:44:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 21:44:30,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:30,660 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:44:30,662 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:30,670 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:30,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-09-26 21:44:30,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:30,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:30,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:30,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:30,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:30,923 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:44:30,924 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:44:30,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:44:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:44:30,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:30,954 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-26 21:44:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:31,118 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-09-26 21:44:31,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:44:31,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-26 21:44:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:31,141 INFO L225 Difference]: With dead ends: 17 [2018-09-26 21:44:31,141 INFO L226 Difference]: Without dead ends: 10 [2018-09-26 21:44:31,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-26 21:44:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-26 21:44:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-26 21:44:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-09-26 21:44:31,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-09-26 21:44:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:31,180 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-09-26 21:44:31,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:44:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-09-26 21:44:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-26 21:44:31,181 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:31,181 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:44:31,181 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:31,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:31,181 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-09-26 21:44:31,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:31,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:31,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:31,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:31,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:31,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:31,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:31,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:31,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:31,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:31,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-26 21:44:31,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:44:31,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:44:31,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:31,433 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-09-26 21:44:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:31,666 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-09-26 21:44:31,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 21:44:31,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-09-26 21:44:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:31,667 INFO L225 Difference]: With dead ends: 17 [2018-09-26 21:44:31,668 INFO L226 Difference]: Without dead ends: 12 [2018-09-26 21:44:31,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-26 21:44:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-26 21:44:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-26 21:44:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-09-26 21:44:31,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-09-26 21:44:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:31,673 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-09-26 21:44:31,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:44:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-09-26 21:44:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-26 21:44:31,674 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:31,674 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 21:44:31,675 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:31,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:31,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-09-26 21:44:31,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:31,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:31,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:31,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:31,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:31,788 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:44:31,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 21:44:31,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 21:44:31,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 21:44:31,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:31,789 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-09-26 21:44:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:32,255 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-09-26 21:44:32,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:44:32,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-26 21:44:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:32,257 INFO L225 Difference]: With dead ends: 32 [2018-09-26 21:44:32,259 INFO L226 Difference]: Without dead ends: 27 [2018-09-26 21:44:32,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-26 21:44:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-09-26 21:44:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 21:44:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-09-26 21:44:32,275 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-09-26 21:44:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:32,276 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-09-26 21:44:32,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 21:44:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-09-26 21:44:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-26 21:44:32,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:32,277 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 21:44:32,280 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:32,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:32,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-09-26 21:44:32,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:32,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:32,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:32,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:32,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-26 21:44:32,368 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:44:32,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 21:44:32,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:44:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:44:32,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:32,369 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-09-26 21:44:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:32,550 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-09-26 21:44:32,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:44:32,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-26 21:44:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:32,556 INFO L225 Difference]: With dead ends: 26 [2018-09-26 21:44:32,556 INFO L226 Difference]: Without dead ends: 24 [2018-09-26 21:44:32,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-26 21:44:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-09-26 21:44:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-26 21:44:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-26 21:44:32,572 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-09-26 21:44:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:32,573 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-26 21:44:32,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:44:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-26 21:44:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-26 21:44:32,574 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:32,574 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-09-26 21:44:32,574 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:32,577 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:32,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-09-26 21:44:32,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:32,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:32,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:32,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:32,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:32,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:32,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:32,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:32,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:32,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:32,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-26 21:44:32,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 21:44:32,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 21:44:32,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:32,768 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-09-26 21:44:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:32,871 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-26 21:44:32,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:44:32,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-09-26 21:44:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:32,873 INFO L225 Difference]: With dead ends: 37 [2018-09-26 21:44:32,873 INFO L226 Difference]: Without dead ends: 23 [2018-09-26 21:44:32,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-26 21:44:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-26 21:44:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-26 21:44:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-26 21:44:32,880 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-09-26 21:44:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:32,880 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-26 21:44:32,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 21:44:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-26 21:44:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 21:44:32,882 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:32,882 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:32,882 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:32,882 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:32,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-09-26 21:44:32,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:32,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:32,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:32,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:32,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:33,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:33,117 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:33,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:44:33,188 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:44:33,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:33,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:33,321 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:33,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-26 21:44:33,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:44:33,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:44:33,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:33,323 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-09-26 21:44:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:33,835 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-09-26 21:44:33,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:44:33,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-09-26 21:44:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:33,837 INFO L225 Difference]: With dead ends: 39 [2018-09-26 21:44:33,837 INFO L226 Difference]: Without dead ends: 25 [2018-09-26 21:44:33,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-26 21:44:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-26 21:44:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-26 21:44:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-26 21:44:33,843 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-09-26 21:44:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:33,844 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-26 21:44:33,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:44:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-26 21:44:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-26 21:44:33,845 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:33,845 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:33,846 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:33,846 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-09-26 21:44:33,846 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:33,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:33,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:33,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:33,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:33,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:33,948 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:33,958 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:44:34,044 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-09-26 21:44:34,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:34,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:34,238 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:34,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-26 21:44:34,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 21:44:34,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 21:44:34,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:34,240 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-09-26 21:44:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:34,389 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-26 21:44:34,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:44:34,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-09-26 21:44:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:34,397 INFO L225 Difference]: With dead ends: 41 [2018-09-26 21:44:34,397 INFO L226 Difference]: Without dead ends: 27 [2018-09-26 21:44:34,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-26 21:44:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-26 21:44:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-26 21:44:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-09-26 21:44:34,408 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-09-26 21:44:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:34,408 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-09-26 21:44:34,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 21:44:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-09-26 21:44:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-26 21:44:34,409 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:34,409 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:34,410 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:34,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-09-26 21:44:34,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:34,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:34,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:34,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:34,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:34,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:34,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:34,514 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:44:34,535 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:44:34,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:34,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:34,633 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:34,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-26 21:44:34,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 21:44:34,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 21:44:34,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:34,634 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-09-26 21:44:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:34,749 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-09-26 21:44:34,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 21:44:34,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-26 21:44:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:34,751 INFO L225 Difference]: With dead ends: 43 [2018-09-26 21:44:34,752 INFO L226 Difference]: Without dead ends: 29 [2018-09-26 21:44:34,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-26 21:44:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-26 21:44:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-26 21:44:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-09-26 21:44:34,757 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-09-26 21:44:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:34,758 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-09-26 21:44:34,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 21:44:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-09-26 21:44:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-26 21:44:34,759 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:34,759 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:34,760 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:34,760 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-09-26 21:44:34,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:34,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:34,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:34,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:34,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:34,896 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:34,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:34,911 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:44:34,946 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-26 21:44:34,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:34,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:35,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:35,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-26 21:44:35,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-26 21:44:35,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-26 21:44:35,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:35,061 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-09-26 21:44:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:35,203 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-26 21:44:35,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-26 21:44:35,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-26 21:44:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:35,205 INFO L225 Difference]: With dead ends: 45 [2018-09-26 21:44:35,205 INFO L226 Difference]: Without dead ends: 31 [2018-09-26 21:44:35,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-26 21:44:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-26 21:44:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-26 21:44:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-26 21:44:35,211 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-09-26 21:44:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:35,211 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-26 21:44:35,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-26 21:44:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-26 21:44:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-26 21:44:35,212 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:35,212 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:35,213 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:35,213 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:35,213 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-09-26 21:44:35,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:35,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:35,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:35,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:35,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:35,376 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:35,376 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:35,384 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:44:35,510 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-26 21:44:35,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:35,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:36,096 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:36,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-26 21:44:36,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-26 21:44:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-26 21:44:36,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:36,101 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-09-26 21:44:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:36,339 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-09-26 21:44:36,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 21:44:36,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-09-26 21:44:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:36,344 INFO L225 Difference]: With dead ends: 47 [2018-09-26 21:44:36,344 INFO L226 Difference]: Without dead ends: 33 [2018-09-26 21:44:36,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-26 21:44:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-26 21:44:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-26 21:44:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-09-26 21:44:36,353 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-09-26 21:44:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:36,354 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-09-26 21:44:36,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-26 21:44:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-09-26 21:44:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-26 21:44:36,355 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:36,355 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:36,355 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:36,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-09-26 21:44:36,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:36,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:36,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:36,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:36,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:36,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:36,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:36,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:36,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:36,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:36,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-26 21:44:36,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-26 21:44:36,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-26 21:44:36,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:36,640 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-09-26 21:44:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:36,733 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-09-26 21:44:36,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-26 21:44:36,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-09-26 21:44:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:36,735 INFO L225 Difference]: With dead ends: 49 [2018-09-26 21:44:36,735 INFO L226 Difference]: Without dead ends: 35 [2018-09-26 21:44:36,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-26 21:44:36,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-26 21:44:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-26 21:44:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-09-26 21:44:36,741 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-09-26 21:44:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:36,742 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-09-26 21:44:36,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-26 21:44:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-09-26 21:44:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-26 21:44:36,743 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:36,743 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:36,743 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:36,743 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:36,744 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-09-26 21:44:36,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:36,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:36,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:36,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:36,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:36,895 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:36,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:36,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:44:36,944 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:44:36,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:36,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:37,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:37,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-26 21:44:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-26 21:44:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-26 21:44:37,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:37,033 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-09-26 21:44:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:37,158 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-09-26 21:44:37,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-26 21:44:37,165 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-09-26 21:44:37,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:37,166 INFO L225 Difference]: With dead ends: 51 [2018-09-26 21:44:37,166 INFO L226 Difference]: Without dead ends: 37 [2018-09-26 21:44:37,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-26 21:44:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-26 21:44:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-26 21:44:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-09-26 21:44:37,179 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-09-26 21:44:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:37,180 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-09-26 21:44:37,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-26 21:44:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-09-26 21:44:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-26 21:44:37,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:37,185 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:37,185 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:37,185 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-09-26 21:44:37,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:37,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:37,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:37,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:37,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:37,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:37,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:37,345 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:44:37,399 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-26 21:44:37,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:37,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:37,619 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:37,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-26 21:44:37,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-26 21:44:37,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-26 21:44:37,620 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:37,620 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-09-26 21:44:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:38,013 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-09-26 21:44:38,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-26 21:44:38,014 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-09-26 21:44:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:38,014 INFO L225 Difference]: With dead ends: 53 [2018-09-26 21:44:38,015 INFO L226 Difference]: Without dead ends: 39 [2018-09-26 21:44:38,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-26 21:44:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-26 21:44:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 21:44:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-09-26 21:44:38,020 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-09-26 21:44:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:38,021 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-09-26 21:44:38,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-26 21:44:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-09-26 21:44:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-26 21:44:38,022 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:38,022 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:38,022 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:38,023 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-09-26 21:44:38,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:38,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:38,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:38,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:38,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:38,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:38,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:38,155 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:44:38,180 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:44:38,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:38,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:38,765 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:38,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-26 21:44:38,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-26 21:44:38,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-26 21:44:38,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:38,767 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-09-26 21:44:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:40,068 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-09-26 21:44:40,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-26 21:44:40,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-09-26 21:44:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:40,070 INFO L225 Difference]: With dead ends: 55 [2018-09-26 21:44:40,070 INFO L226 Difference]: Without dead ends: 41 [2018-09-26 21:44:40,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-26 21:44:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-26 21:44:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-26 21:44:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-09-26 21:44:40,077 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-09-26 21:44:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:40,077 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-09-26 21:44:40,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-26 21:44:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-09-26 21:44:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-26 21:44:40,078 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:40,079 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:40,079 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:40,079 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-09-26 21:44:40,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:40,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:40,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:40,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:40,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:40,208 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:40,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:40,222 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:44:40,320 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-26 21:44:40,320 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:40,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:40,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:40,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-26 21:44:40,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-26 21:44:40,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-26 21:44:40,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:40,490 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-09-26 21:44:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:40,572 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-09-26 21:44:40,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-26 21:44:40,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-09-26 21:44:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:40,575 INFO L225 Difference]: With dead ends: 57 [2018-09-26 21:44:40,575 INFO L226 Difference]: Without dead ends: 43 [2018-09-26 21:44:40,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-26 21:44:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-26 21:44:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-26 21:44:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-09-26 21:44:40,583 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-09-26 21:44:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:40,583 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-09-26 21:44:40,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-26 21:44:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-09-26 21:44:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-26 21:44:40,584 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:40,584 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:40,585 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:40,585 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:40,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-09-26 21:44:40,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:40,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:40,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:40,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:40,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:41,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:41,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:41,134 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:44:41,217 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-09-26 21:44:41,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:41,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:41,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:41,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-26 21:44:41,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-26 21:44:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-26 21:44:41,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:41,342 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-09-26 21:44:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:41,678 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-09-26 21:44:41,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-26 21:44:41,680 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-09-26 21:44:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:41,681 INFO L225 Difference]: With dead ends: 59 [2018-09-26 21:44:41,681 INFO L226 Difference]: Without dead ends: 45 [2018-09-26 21:44:41,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-26 21:44:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-26 21:44:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-26 21:44:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-09-26 21:44:41,691 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-09-26 21:44:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:41,691 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-09-26 21:44:41,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-26 21:44:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-09-26 21:44:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-26 21:44:41,695 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:41,695 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:41,695 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:41,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-09-26 21:44:41,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:41,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:41,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:41,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:41,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:42,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:42,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:42,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:42,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:42,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:42,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-26 21:44:42,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-26 21:44:42,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-26 21:44:42,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:42,962 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-09-26 21:44:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:43,131 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-09-26 21:44:43,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-26 21:44:43,131 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-09-26 21:44:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:43,132 INFO L225 Difference]: With dead ends: 61 [2018-09-26 21:44:43,132 INFO L226 Difference]: Without dead ends: 47 [2018-09-26 21:44:43,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-26 21:44:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-26 21:44:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-26 21:44:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-09-26 21:44:43,140 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-09-26 21:44:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:43,140 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-09-26 21:44:43,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-26 21:44:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-09-26 21:44:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-26 21:44:43,141 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:43,141 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:43,141 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:43,142 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:43,142 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-09-26 21:44:43,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:43,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:43,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:43,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:43,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:43,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:43,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:43,413 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:44:43,445 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:44:43,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:43,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:43,573 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:43,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-26 21:44:43,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-26 21:44:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-26 21:44:43,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:43,575 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-09-26 21:44:43,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:43,780 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-09-26 21:44:43,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-26 21:44:43,780 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-09-26 21:44:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:43,781 INFO L225 Difference]: With dead ends: 63 [2018-09-26 21:44:43,781 INFO L226 Difference]: Without dead ends: 49 [2018-09-26 21:44:43,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-26 21:44:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-26 21:44:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-26 21:44:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-09-26 21:44:43,790 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-09-26 21:44:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:43,790 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-09-26 21:44:43,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-26 21:44:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-09-26 21:44:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-26 21:44:43,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:43,791 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:43,792 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:43,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-09-26 21:44:43,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:43,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:43,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:43,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:43,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:43,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:43,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:43,980 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:44:44,061 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-09-26 21:44:44,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:44,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:44,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:44,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-26 21:44:44,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-26 21:44:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-26 21:44:44,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:44,595 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-09-26 21:44:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:44,903 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-09-26 21:44:44,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-26 21:44:44,904 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-09-26 21:44:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:44,904 INFO L225 Difference]: With dead ends: 65 [2018-09-26 21:44:44,905 INFO L226 Difference]: Without dead ends: 51 [2018-09-26 21:44:44,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-26 21:44:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-26 21:44:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-26 21:44:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-26 21:44:44,911 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-09-26 21:44:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:44,911 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-26 21:44:44,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-26 21:44:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-26 21:44:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-26 21:44:44,912 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:44,912 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:44,912 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:44,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-09-26 21:44:44,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:44,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:44,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:44,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:44,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:46,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:46,012 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:46,021 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:44:46,058 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:44:46,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:46,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:46,256 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:46,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-26 21:44:46,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-26 21:44:46,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-26 21:44:46,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:46,258 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-09-26 21:44:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:46,456 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-09-26 21:44:46,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-26 21:44:46,457 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-09-26 21:44:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:46,458 INFO L225 Difference]: With dead ends: 67 [2018-09-26 21:44:46,458 INFO L226 Difference]: Without dead ends: 53 [2018-09-26 21:44:46,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-26 21:44:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-26 21:44:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-26 21:44:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-09-26 21:44:46,465 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-09-26 21:44:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:46,466 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-09-26 21:44:46,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-26 21:44:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-09-26 21:44:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-26 21:44:46,467 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:46,467 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:46,467 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:46,467 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-09-26 21:44:46,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:46,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:46,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:46,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:46,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:46,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:46,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:46,701 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:44:46,746 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-26 21:44:46,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:46,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:46,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:46,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-26 21:44:46,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-26 21:44:46,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-26 21:44:46,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:46,954 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-09-26 21:44:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:47,153 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-09-26 21:44:47,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-26 21:44:47,154 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-09-26 21:44:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:47,155 INFO L225 Difference]: With dead ends: 69 [2018-09-26 21:44:47,155 INFO L226 Difference]: Without dead ends: 55 [2018-09-26 21:44:47,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-26 21:44:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-26 21:44:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-26 21:44:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-09-26 21:44:47,161 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-09-26 21:44:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:47,162 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-09-26 21:44:47,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-26 21:44:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-09-26 21:44:47,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-26 21:44:47,163 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:47,163 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:47,163 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:47,163 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-09-26 21:44:47,163 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:47,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:47,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:47,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:47,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:47,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:47,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:47,422 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:44:47,658 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-09-26 21:44:47,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:47,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:47,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:47,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-26 21:44:47,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-26 21:44:47,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-26 21:44:47,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:47,789 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-09-26 21:44:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:48,068 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-09-26 21:44:48,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-26 21:44:48,071 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-09-26 21:44:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:48,072 INFO L225 Difference]: With dead ends: 71 [2018-09-26 21:44:48,072 INFO L226 Difference]: Without dead ends: 57 [2018-09-26 21:44:48,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-26 21:44:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-26 21:44:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-26 21:44:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-09-26 21:44:48,079 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-09-26 21:44:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:48,079 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-09-26 21:44:48,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-26 21:44:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-09-26 21:44:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-26 21:44:48,080 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:48,080 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:48,080 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:48,080 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-09-26 21:44:48,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:48,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:48,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:48,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:48,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:48,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:48,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:48,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:48,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:48,679 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:48,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-26 21:44:48,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-26 21:44:48,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-26 21:44:48,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:48,681 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-09-26 21:44:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:48,959 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-09-26 21:44:48,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-26 21:44:48,960 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-09-26 21:44:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:48,960 INFO L225 Difference]: With dead ends: 73 [2018-09-26 21:44:48,960 INFO L226 Difference]: Without dead ends: 59 [2018-09-26 21:44:48,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-26 21:44:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-26 21:44:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-26 21:44:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-09-26 21:44:48,966 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-09-26 21:44:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:48,966 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-09-26 21:44:48,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-26 21:44:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-09-26 21:44:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-26 21:44:48,967 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:48,967 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:48,967 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:48,967 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-09-26 21:44:48,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:48,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:48,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:48,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:48,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:49,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:49,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:49,209 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:44:49,251 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:44:49,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:49,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:49,402 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:49,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-26 21:44:49,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-26 21:44:49,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-26 21:44:49,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:49,403 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-09-26 21:44:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:49,527 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-09-26 21:44:49,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-26 21:44:49,528 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-09-26 21:44:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:49,528 INFO L225 Difference]: With dead ends: 75 [2018-09-26 21:44:49,529 INFO L226 Difference]: Without dead ends: 61 [2018-09-26 21:44:49,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-26 21:44:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-26 21:44:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-26 21:44:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-09-26 21:44:49,533 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-09-26 21:44:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:49,534 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-09-26 21:44:49,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-26 21:44:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-09-26 21:44:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-26 21:44:49,534 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:49,535 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:49,535 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:49,535 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:49,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-09-26 21:44:49,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:49,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:49,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:49,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:49,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:50,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:50,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:50,016 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:44:50,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-09-26 21:44:50,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:50,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:50,218 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:50,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-26 21:44:50,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-26 21:44:50,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-26 21:44:50,219 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:50,219 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-09-26 21:44:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:50,328 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-09-26 21:44:50,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-26 21:44:50,328 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-09-26 21:44:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:50,329 INFO L225 Difference]: With dead ends: 77 [2018-09-26 21:44:50,329 INFO L226 Difference]: Without dead ends: 63 [2018-09-26 21:44:50,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-26 21:44:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-26 21:44:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-26 21:44:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-09-26 21:44:50,333 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-09-26 21:44:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:50,333 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-09-26 21:44:50,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-26 21:44:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-09-26 21:44:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-26 21:44:50,334 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:50,334 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:50,334 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:50,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-09-26 21:44:50,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:50,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:50,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:50,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:50,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:50,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:50,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:50,635 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:44:50,680 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:44:50,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:50,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:50,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:50,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-26 21:44:50,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-26 21:44:50,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-26 21:44:50,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:50,851 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-09-26 21:44:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:51,229 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-09-26 21:44:51,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-26 21:44:51,229 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-09-26 21:44:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:51,230 INFO L225 Difference]: With dead ends: 79 [2018-09-26 21:44:51,230 INFO L226 Difference]: Without dead ends: 65 [2018-09-26 21:44:51,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-26 21:44:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-26 21:44:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-26 21:44:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-09-26 21:44:51,234 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-09-26 21:44:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:51,234 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-09-26 21:44:51,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-26 21:44:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-09-26 21:44:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-26 21:44:51,235 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:51,235 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:51,235 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:51,235 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-09-26 21:44:51,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:51,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:51,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:51,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:51,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:51,647 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:51,647 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:51,655 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:44:51,713 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-26 21:44:51,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:51,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:51,868 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:51,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-26 21:44:51,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-26 21:44:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-26 21:44:51,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:51,870 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-09-26 21:44:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:52,239 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-09-26 21:44:52,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-26 21:44:52,239 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-09-26 21:44:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:52,240 INFO L225 Difference]: With dead ends: 81 [2018-09-26 21:44:52,240 INFO L226 Difference]: Without dead ends: 67 [2018-09-26 21:44:52,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-26 21:44:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-26 21:44:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-26 21:44:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-09-26 21:44:52,245 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-09-26 21:44:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:52,245 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-09-26 21:44:52,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-26 21:44:52,246 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-09-26 21:44:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-26 21:44:52,246 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:52,246 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:52,247 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:52,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-09-26 21:44:52,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:52,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:52,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:52,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:52,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:52,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:52,583 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:52,591 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:44:52,651 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-09-26 21:44:52,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:52,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:52,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:52,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-26 21:44:52,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-26 21:44:52,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-26 21:44:52,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:52,783 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-09-26 21:44:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:53,222 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-09-26 21:44:53,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-26 21:44:53,222 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-09-26 21:44:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:53,223 INFO L225 Difference]: With dead ends: 83 [2018-09-26 21:44:53,223 INFO L226 Difference]: Without dead ends: 69 [2018-09-26 21:44:53,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-26 21:44:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-26 21:44:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-26 21:44:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-09-26 21:44:53,227 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-09-26 21:44:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:53,227 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-09-26 21:44:53,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-26 21:44:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-09-26 21:44:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-26 21:44:53,228 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:53,228 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:53,229 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:53,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:53,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-09-26 21:44:53,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:53,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:53,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:53,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:53,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:53,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:53,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:53,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:53,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:53,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:53,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-26 21:44:53,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-26 21:44:53,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-26 21:44:53,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:53,619 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-09-26 21:44:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:53,840 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-09-26 21:44:53,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-26 21:44:53,841 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-09-26 21:44:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:53,841 INFO L225 Difference]: With dead ends: 85 [2018-09-26 21:44:53,841 INFO L226 Difference]: Without dead ends: 71 [2018-09-26 21:44:53,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-26 21:44:53,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-26 21:44:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-26 21:44:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-09-26 21:44:53,847 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-09-26 21:44:53,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:53,847 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-09-26 21:44:53,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-26 21:44:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-09-26 21:44:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-26 21:44:53,848 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:53,848 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:53,848 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:53,848 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-09-26 21:44:53,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:53,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:53,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:53,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:53,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:54,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:54,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:54,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:44:54,165 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:44:54,165 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:54,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:54,369 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:54,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-26 21:44:54,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-26 21:44:54,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-26 21:44:54,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:54,370 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-09-26 21:44:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:54,528 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-09-26 21:44:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-26 21:44:54,528 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-09-26 21:44:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:54,529 INFO L225 Difference]: With dead ends: 87 [2018-09-26 21:44:54,529 INFO L226 Difference]: Without dead ends: 73 [2018-09-26 21:44:54,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-26 21:44:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-26 21:44:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-26 21:44:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-09-26 21:44:54,533 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-09-26 21:44:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:54,534 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-09-26 21:44:54,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-26 21:44:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-09-26 21:44:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-26 21:44:54,534 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:54,535 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:54,535 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:54,535 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:54,535 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-09-26 21:44:54,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:54,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:54,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:54,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:54,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:55,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:55,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:55,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:44:55,880 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-09-26 21:44:55,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:55,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:56,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:56,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-26 21:44:56,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-26 21:44:56,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-26 21:44:56,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:56,103 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-09-26 21:44:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:56,311 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-09-26 21:44:56,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-26 21:44:56,312 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-09-26 21:44:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:56,312 INFO L225 Difference]: With dead ends: 89 [2018-09-26 21:44:56,313 INFO L226 Difference]: Without dead ends: 75 [2018-09-26 21:44:56,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-26 21:44:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-26 21:44:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-26 21:44:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-09-26 21:44:56,321 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-09-26 21:44:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:56,322 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-09-26 21:44:56,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-26 21:44:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-09-26 21:44:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-26 21:44:56,322 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:56,323 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:56,323 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:56,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:56,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-09-26 21:44:56,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:56,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:56,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:56,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:56,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:56,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:56,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:56,747 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:44:56,811 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:44:56,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:56,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:57,095 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:57,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-26 21:44:57,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-26 21:44:57,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-26 21:44:57,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:57,096 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-09-26 21:44:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:57,383 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-09-26 21:44:57,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-26 21:44:57,383 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-09-26 21:44:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:57,384 INFO L225 Difference]: With dead ends: 91 [2018-09-26 21:44:57,384 INFO L226 Difference]: Without dead ends: 77 [2018-09-26 21:44:57,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-26 21:44:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-26 21:44:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-26 21:44:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-09-26 21:44:57,389 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-09-26 21:44:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:57,389 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-09-26 21:44:57,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-26 21:44:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-09-26 21:44:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-26 21:44:57,390 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:57,390 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:57,390 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:57,390 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-09-26 21:44:57,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:57,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:57,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:57,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:57,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:57,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:57,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:57,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:44:58,030 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-26 21:44:58,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:58,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:58,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:58,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-26 21:44:58,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-26 21:44:58,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-26 21:44:58,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:58,183 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-09-26 21:44:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:58,503 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-09-26 21:44:58,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-26 21:44:58,504 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-09-26 21:44:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:58,504 INFO L225 Difference]: With dead ends: 93 [2018-09-26 21:44:58,504 INFO L226 Difference]: Without dead ends: 79 [2018-09-26 21:44:58,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-26 21:44:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-26 21:44:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-26 21:44:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-09-26 21:44:58,508 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-09-26 21:44:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:58,509 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-09-26 21:44:58,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-26 21:44:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-09-26 21:44:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-26 21:44:58,509 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:58,509 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:58,509 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:58,510 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-09-26 21:44:58,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:58,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:58,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:58,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:58,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:58,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:58,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:58,856 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:44:58,924 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-09-26 21:44:58,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:58,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:59,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:59,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-26 21:44:59,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-26 21:44:59,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-26 21:44:59,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:59,190 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-09-26 21:44:59,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:59,492 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-09-26 21:44:59,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-26 21:44:59,492 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-09-26 21:44:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:59,493 INFO L225 Difference]: With dead ends: 95 [2018-09-26 21:44:59,493 INFO L226 Difference]: Without dead ends: 81 [2018-09-26 21:44:59,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-26 21:44:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-26 21:44:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-26 21:44:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-09-26 21:44:59,497 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-09-26 21:44:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:59,497 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-09-26 21:44:59,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-26 21:44:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-09-26 21:44:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-26 21:44:59,498 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:59,498 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:44:59,498 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:59,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:59,498 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-09-26 21:44:59,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:59,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:59,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:59,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:59,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:44:59,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:59,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:44:59,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:44:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:59,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:00,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:00,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-26 21:45:00,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-26 21:45:00,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-26 21:45:00,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:00,074 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-09-26 21:45:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:00,398 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-09-26 21:45:00,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-26 21:45:00,399 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-09-26 21:45:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:00,399 INFO L225 Difference]: With dead ends: 97 [2018-09-26 21:45:00,400 INFO L226 Difference]: Without dead ends: 83 [2018-09-26 21:45:00,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-26 21:45:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-26 21:45:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-26 21:45:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-09-26 21:45:00,405 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-09-26 21:45:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:00,405 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-09-26 21:45:00,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-26 21:45:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-09-26 21:45:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-26 21:45:00,406 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:00,406 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:00,406 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:00,407 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-09-26 21:45:00,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:00,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:00,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:00,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:00,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:00,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:00,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:00,733 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:45:00,788 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:45:00,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:00,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:00,991 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:00,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-26 21:45:00,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-26 21:45:00,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-26 21:45:00,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:00,992 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-09-26 21:45:01,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:01,318 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-09-26 21:45:01,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-26 21:45:01,325 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-09-26 21:45:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:01,326 INFO L225 Difference]: With dead ends: 99 [2018-09-26 21:45:01,326 INFO L226 Difference]: Without dead ends: 85 [2018-09-26 21:45:01,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-26 21:45:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-26 21:45:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-26 21:45:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-09-26 21:45:01,331 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-09-26 21:45:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:01,331 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-09-26 21:45:01,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-26 21:45:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-09-26 21:45:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-26 21:45:01,332 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:01,332 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:01,332 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:01,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-09-26 21:45:01,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:01,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:01,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:01,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:01,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:01,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:01,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:01,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:45:01,884 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-09-26 21:45:01,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:01,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:02,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:02,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-26 21:45:02,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-26 21:45:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-26 21:45:02,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:02,067 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-09-26 21:45:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:02,250 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-09-26 21:45:02,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-26 21:45:02,250 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-09-26 21:45:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:02,251 INFO L225 Difference]: With dead ends: 101 [2018-09-26 21:45:02,251 INFO L226 Difference]: Without dead ends: 87 [2018-09-26 21:45:02,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-26 21:45:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-26 21:45:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-26 21:45:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-09-26 21:45:02,256 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-09-26 21:45:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:02,256 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-09-26 21:45:02,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-26 21:45:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-09-26 21:45:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-26 21:45:02,257 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:02,257 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:02,258 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:02,258 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:02,258 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-09-26 21:45:02,258 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:02,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:02,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:02,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:02,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:02,927 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:02,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:02,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:45:02,989 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:45:02,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:02,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:03,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:03,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-26 21:45:03,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-26 21:45:03,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-26 21:45:03,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:03,183 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-09-26 21:45:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:03,429 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-09-26 21:45:03,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-26 21:45:03,429 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-09-26 21:45:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:03,430 INFO L225 Difference]: With dead ends: 103 [2018-09-26 21:45:03,430 INFO L226 Difference]: Without dead ends: 89 [2018-09-26 21:45:03,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-26 21:45:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-26 21:45:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-26 21:45:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-09-26 21:45:03,436 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-09-26 21:45:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:03,436 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-09-26 21:45:03,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-26 21:45:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-09-26 21:45:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-26 21:45:03,437 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:03,437 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:03,438 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:03,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:03,438 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-09-26 21:45:03,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:03,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:03,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:03,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:03,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:03,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:03,839 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:03,847 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:45:03,941 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-26 21:45:03,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:03,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:05,471 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:05,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-26 21:45:05,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-26 21:45:05,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-26 21:45:05,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:05,472 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-09-26 21:45:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:05,821 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-09-26 21:45:05,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-26 21:45:05,821 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-09-26 21:45:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:05,822 INFO L225 Difference]: With dead ends: 105 [2018-09-26 21:45:05,822 INFO L226 Difference]: Without dead ends: 91 [2018-09-26 21:45:05,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-26 21:45:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-26 21:45:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-26 21:45:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-09-26 21:45:05,826 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-09-26 21:45:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:05,826 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-09-26 21:45:05,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-26 21:45:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-09-26 21:45:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-26 21:45:05,827 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:05,827 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:05,827 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:05,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-09-26 21:45:05,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:05,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:05,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:05,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:06,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:06,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:06,138 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:45:06,227 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-09-26 21:45:06,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:06,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:06,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:06,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-26 21:45:06,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-26 21:45:06,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-26 21:45:06,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:06,499 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-09-26 21:45:06,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:06,961 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-09-26 21:45:06,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-26 21:45:06,964 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-09-26 21:45:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:06,965 INFO L225 Difference]: With dead ends: 107 [2018-09-26 21:45:06,965 INFO L226 Difference]: Without dead ends: 93 [2018-09-26 21:45:06,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-26 21:45:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-26 21:45:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-26 21:45:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-09-26 21:45:06,971 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-09-26 21:45:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:06,971 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-09-26 21:45:06,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-26 21:45:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-09-26 21:45:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-26 21:45:06,972 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:06,972 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:06,972 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:06,972 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:06,972 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-09-26 21:45:06,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:06,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:06,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:06,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:06,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:07,481 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:07,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:07,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:07,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:07,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:07,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-26 21:45:07,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-26 21:45:07,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-26 21:45:07,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:07,737 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-09-26 21:45:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:08,011 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-09-26 21:45:08,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-26 21:45:08,011 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-09-26 21:45:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:08,012 INFO L225 Difference]: With dead ends: 109 [2018-09-26 21:45:08,012 INFO L226 Difference]: Without dead ends: 95 [2018-09-26 21:45:08,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-26 21:45:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-26 21:45:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-26 21:45:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-09-26 21:45:08,018 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-09-26 21:45:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:08,018 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-09-26 21:45:08,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-26 21:45:08,018 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-09-26 21:45:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-26 21:45:08,019 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:08,019 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:08,019 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:08,019 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:08,020 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-09-26 21:45:08,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:08,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:08,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:08,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:08,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:09,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:09,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:09,696 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:45:09,774 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:45:09,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:09,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:10,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:10,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-26 21:45:10,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-26 21:45:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-26 21:45:10,220 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:10,220 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-09-26 21:45:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:10,685 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-09-26 21:45:10,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-26 21:45:10,686 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-09-26 21:45:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:10,686 INFO L225 Difference]: With dead ends: 111 [2018-09-26 21:45:10,687 INFO L226 Difference]: Without dead ends: 97 [2018-09-26 21:45:10,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-26 21:45:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-26 21:45:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-26 21:45:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-09-26 21:45:10,691 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-09-26 21:45:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:10,692 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-09-26 21:45:10,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-26 21:45:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-09-26 21:45:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-26 21:45:10,693 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:10,693 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:10,693 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:10,693 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-09-26 21:45:10,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:10,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:10,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:10,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:10,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:11,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:11,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:11,237 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:45:11,346 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-09-26 21:45:11,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:11,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:11,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:11,561 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-26 21:45:11,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-26 21:45:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-26 21:45:11,562 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:11,562 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-09-26 21:45:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:12,013 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-09-26 21:45:12,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-26 21:45:12,013 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-09-26 21:45:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:12,014 INFO L225 Difference]: With dead ends: 113 [2018-09-26 21:45:12,014 INFO L226 Difference]: Without dead ends: 99 [2018-09-26 21:45:12,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-26 21:45:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-26 21:45:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-26 21:45:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-09-26 21:45:12,019 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-09-26 21:45:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:12,019 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-09-26 21:45:12,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-26 21:45:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-09-26 21:45:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-26 21:45:12,019 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:12,020 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:12,020 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:12,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:12,020 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-09-26 21:45:12,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:12,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:12,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:12,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:12,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:13,055 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:13,055 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:13,064 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:45:13,123 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:45:13,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:13,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:14,768 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:14,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-26 21:45:14,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-26 21:45:14,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-26 21:45:14,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:14,769 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-09-26 21:45:15,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:15,239 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-09-26 21:45:15,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-26 21:45:15,239 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-09-26 21:45:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:15,240 INFO L225 Difference]: With dead ends: 115 [2018-09-26 21:45:15,240 INFO L226 Difference]: Without dead ends: 101 [2018-09-26 21:45:15,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-26 21:45:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-26 21:45:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-26 21:45:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-09-26 21:45:15,245 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-09-26 21:45:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:15,245 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-09-26 21:45:15,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-26 21:45:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-09-26 21:45:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-26 21:45:15,246 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:15,246 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:15,246 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:15,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-09-26 21:45:15,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:15,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:15,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:15,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:15,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:16,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:16,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:16,536 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:45:16,642 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-26 21:45:16,643 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:16,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:17,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:17,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-26 21:45:17,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-26 21:45:17,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-26 21:45:17,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:17,001 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-09-26 21:45:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:17,485 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-09-26 21:45:17,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-26 21:45:17,486 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-09-26 21:45:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:17,487 INFO L225 Difference]: With dead ends: 117 [2018-09-26 21:45:17,487 INFO L226 Difference]: Without dead ends: 103 [2018-09-26 21:45:17,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-26 21:45:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-26 21:45:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-26 21:45:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-09-26 21:45:17,492 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-09-26 21:45:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:17,493 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-09-26 21:45:17,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-26 21:45:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-09-26 21:45:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-26 21:45:17,493 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:17,494 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:17,494 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:17,494 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:17,494 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-09-26 21:45:17,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:17,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:17,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:17,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:17,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:18,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:18,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:18,236 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:45:18,336 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-09-26 21:45:18,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:18,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:18,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:18,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-26 21:45:18,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-26 21:45:18,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-26 21:45:18,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:18,557 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-09-26 21:45:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:18,883 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-09-26 21:45:18,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-26 21:45:18,883 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-09-26 21:45:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:18,884 INFO L225 Difference]: With dead ends: 119 [2018-09-26 21:45:18,884 INFO L226 Difference]: Without dead ends: 105 [2018-09-26 21:45:18,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-26 21:45:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-26 21:45:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-26 21:45:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-09-26 21:45:18,891 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-09-26 21:45:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:18,891 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-09-26 21:45:18,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-26 21:45:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-09-26 21:45:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-26 21:45:18,892 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:18,892 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:18,892 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:18,892 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-09-26 21:45:18,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:18,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:18,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:18,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:18,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:19,248 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:19,248 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:19,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:19,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:19,573 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:19,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-26 21:45:19,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-26 21:45:19,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-26 21:45:19,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:19,575 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-09-26 21:45:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:19,785 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-09-26 21:45:19,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-26 21:45:19,785 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-09-26 21:45:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:19,786 INFO L225 Difference]: With dead ends: 121 [2018-09-26 21:45:19,786 INFO L226 Difference]: Without dead ends: 107 [2018-09-26 21:45:19,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-26 21:45:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-26 21:45:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-26 21:45:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-09-26 21:45:19,790 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-09-26 21:45:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:19,791 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-09-26 21:45:19,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-26 21:45:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-09-26 21:45:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-26 21:45:19,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:19,791 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:19,792 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:19,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:19,792 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-09-26 21:45:19,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:19,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:19,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:19,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:19,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:20,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:20,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:20,422 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:45:20,513 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:45:20,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:20,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:20,748 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:20,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-26 21:45:20,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-26 21:45:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-26 21:45:20,750 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:20,750 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-09-26 21:45:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:21,242 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-09-26 21:45:21,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-26 21:45:21,242 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-09-26 21:45:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:21,243 INFO L225 Difference]: With dead ends: 123 [2018-09-26 21:45:21,243 INFO L226 Difference]: Without dead ends: 109 [2018-09-26 21:45:21,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-26 21:45:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-26 21:45:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-26 21:45:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-09-26 21:45:21,249 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-09-26 21:45:21,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:21,250 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-09-26 21:45:21,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-26 21:45:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-09-26 21:45:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-26 21:45:21,250 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:21,251 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:21,251 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:21,251 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:21,251 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-09-26 21:45:21,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:21,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:21,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:21,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:21,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:21,622 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:21,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:21,630 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:45:21,739 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-09-26 21:45:21,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:21,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:22,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:22,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-26 21:45:22,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-26 21:45:22,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-26 21:45:22,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:22,059 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-09-26 21:45:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:22,443 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-09-26 21:45:22,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-26 21:45:22,443 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-09-26 21:45:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:22,444 INFO L225 Difference]: With dead ends: 125 [2018-09-26 21:45:22,444 INFO L226 Difference]: Without dead ends: 111 [2018-09-26 21:45:22,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-26 21:45:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-26 21:45:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-26 21:45:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-09-26 21:45:22,449 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-09-26 21:45:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:22,449 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-09-26 21:45:22,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-26 21:45:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-09-26 21:45:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-26 21:45:22,450 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:22,450 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:22,450 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:22,450 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-09-26 21:45:22,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:22,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:22,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:22,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:22,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:22,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:22,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:22,886 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:45:22,969 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:45:22,970 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:22,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:23,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:23,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-26 21:45:23,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-26 21:45:23,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-26 21:45:23,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:23,237 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-09-26 21:45:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:23,766 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-09-26 21:45:23,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-26 21:45:23,766 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-09-26 21:45:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:23,767 INFO L225 Difference]: With dead ends: 127 [2018-09-26 21:45:23,767 INFO L226 Difference]: Without dead ends: 113 [2018-09-26 21:45:23,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-26 21:45:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-26 21:45:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-26 21:45:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-09-26 21:45:23,771 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-09-26 21:45:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:23,772 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-09-26 21:45:23,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-26 21:45:23,772 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-09-26 21:45:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-26 21:45:23,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:23,772 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:23,773 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:23,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-09-26 21:45:23,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:23,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:23,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:23,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:23,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:24,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:24,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:24,246 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:45:24,369 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-26 21:45:24,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:24,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:24,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:24,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-26 21:45:24,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-26 21:45:24,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-26 21:45:24,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:24,768 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-09-26 21:45:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:25,152 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-09-26 21:45:25,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-26 21:45:25,153 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-09-26 21:45:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:25,154 INFO L225 Difference]: With dead ends: 129 [2018-09-26 21:45:25,154 INFO L226 Difference]: Without dead ends: 115 [2018-09-26 21:45:25,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-26 21:45:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-26 21:45:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-26 21:45:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-09-26 21:45:25,160 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-09-26 21:45:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:25,161 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-09-26 21:45:25,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-26 21:45:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-09-26 21:45:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-26 21:45:25,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:25,162 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:25,162 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:25,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:25,162 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-09-26 21:45:25,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:25,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:25,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:25,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:25,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:25,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:25,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:25,966 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:45:26,091 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-09-26 21:45:26,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:26,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:26,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:26,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-26 21:45:26,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-26 21:45:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-26 21:45:26,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:26,356 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-09-26 21:45:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:26,796 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-09-26 21:45:26,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-26 21:45:26,796 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-09-26 21:45:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:26,797 INFO L225 Difference]: With dead ends: 131 [2018-09-26 21:45:26,797 INFO L226 Difference]: Without dead ends: 117 [2018-09-26 21:45:26,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-26 21:45:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-26 21:45:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-26 21:45:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-09-26 21:45:26,801 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-09-26 21:45:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:26,801 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-09-26 21:45:26,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-26 21:45:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-09-26 21:45:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-26 21:45:26,802 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:26,802 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:26,802 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:26,802 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-09-26 21:45:26,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:26,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:26,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:26,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:26,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:27,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:27,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:27,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:27,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:27,705 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:27,705 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-26 21:45:27,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-26 21:45:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-26 21:45:27,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:27,706 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-09-26 21:45:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:28,224 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-09-26 21:45:28,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-26 21:45:28,224 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-09-26 21:45:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:28,225 INFO L225 Difference]: With dead ends: 133 [2018-09-26 21:45:28,225 INFO L226 Difference]: Without dead ends: 119 [2018-09-26 21:45:28,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-26 21:45:28,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-26 21:45:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-26 21:45:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-09-26 21:45:28,230 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-09-26 21:45:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:28,231 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-09-26 21:45:28,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-26 21:45:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-09-26 21:45:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-26 21:45:28,232 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:28,232 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:28,232 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:28,232 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-09-26 21:45:28,232 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:28,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:28,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:28,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:28,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:28,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:28,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:28,580 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:45:28,657 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:45:28,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:28,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:29,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:29,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-26 21:45:29,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-26 21:45:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-26 21:45:29,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:29,976 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-09-26 21:45:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:30,750 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-09-26 21:45:30,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-26 21:45:30,751 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-09-26 21:45:30,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:30,751 INFO L225 Difference]: With dead ends: 135 [2018-09-26 21:45:30,752 INFO L226 Difference]: Without dead ends: 121 [2018-09-26 21:45:30,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-26 21:45:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-26 21:45:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-26 21:45:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-09-26 21:45:30,756 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-09-26 21:45:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:30,756 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-09-26 21:45:30,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-26 21:45:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-09-26 21:45:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-26 21:45:30,757 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:30,757 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:30,757 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:30,757 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-09-26 21:45:30,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:30,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:30,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:30,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:30,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:31,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:31,126 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:31,135 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:45:31,277 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-09-26 21:45:31,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:31,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:31,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:31,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-26 21:45:31,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-26 21:45:31,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-26 21:45:31,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:31,659 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-09-26 21:45:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:32,127 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-09-26 21:45:32,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-26 21:45:32,128 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-09-26 21:45:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:32,128 INFO L225 Difference]: With dead ends: 137 [2018-09-26 21:45:32,129 INFO L226 Difference]: Without dead ends: 123 [2018-09-26 21:45:32,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-26 21:45:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-26 21:45:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-26 21:45:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-09-26 21:45:32,134 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-09-26 21:45:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:32,135 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-09-26 21:45:32,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-26 21:45:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-09-26 21:45:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-26 21:45:32,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:32,136 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:32,136 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:32,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-09-26 21:45:32,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:32,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:32,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:32,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:32,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:32,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:32,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:32,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:45:32,881 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:45:32,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:32,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:33,190 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:33,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-26 21:45:33,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-26 21:45:33,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-26 21:45:33,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:33,191 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-09-26 21:45:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:33,765 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-09-26 21:45:33,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-26 21:45:33,765 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-09-26 21:45:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:33,766 INFO L225 Difference]: With dead ends: 139 [2018-09-26 21:45:33,766 INFO L226 Difference]: Without dead ends: 125 [2018-09-26 21:45:33,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-26 21:45:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-26 21:45:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-26 21:45:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-09-26 21:45:33,771 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-09-26 21:45:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:33,771 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-09-26 21:45:33,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-26 21:45:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-09-26 21:45:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-26 21:45:33,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:33,772 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:33,772 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:33,772 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-09-26 21:45:33,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:33,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:33,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:33,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:33,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:34,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:34,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:34,172 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:45:34,357 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-26 21:45:34,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:34,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:34,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:34,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-26 21:45:34,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-26 21:45:34,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-26 21:45:34,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:34,772 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-09-26 21:45:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:35,385 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-09-26 21:45:35,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-26 21:45:35,385 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-09-26 21:45:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:35,386 INFO L225 Difference]: With dead ends: 141 [2018-09-26 21:45:35,386 INFO L226 Difference]: Without dead ends: 127 [2018-09-26 21:45:35,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-26 21:45:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-26 21:45:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-26 21:45:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-09-26 21:45:35,390 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-09-26 21:45:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:35,391 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-09-26 21:45:35,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-26 21:45:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-09-26 21:45:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-26 21:45:35,391 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:35,391 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:35,392 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:35,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:35,392 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-09-26 21:45:35,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:35,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:35,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:35,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:35,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:35,857 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:35,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:35,867 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:45:36,004 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-09-26 21:45:36,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:36,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:36,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:36,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-26 21:45:36,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-26 21:45:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-26 21:45:36,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:36,315 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-09-26 21:45:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:36,902 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-09-26 21:45:36,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-26 21:45:36,903 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-09-26 21:45:36,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:36,903 INFO L225 Difference]: With dead ends: 143 [2018-09-26 21:45:36,903 INFO L226 Difference]: Without dead ends: 129 [2018-09-26 21:45:36,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-26 21:45:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-26 21:45:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-26 21:45:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-09-26 21:45:36,908 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-09-26 21:45:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:36,909 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-09-26 21:45:36,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-26 21:45:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-09-26 21:45:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-26 21:45:36,909 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:36,909 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:36,909 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:36,910 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-09-26 21:45:36,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:36,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:36,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:36,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:36,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:37,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:37,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:37,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:37,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:37,818 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:37,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-26 21:45:37,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-26 21:45:37,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-26 21:45:37,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:37,819 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-09-26 21:45:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:38,449 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-09-26 21:45:38,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-26 21:45:38,450 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-09-26 21:45:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:38,450 INFO L225 Difference]: With dead ends: 145 [2018-09-26 21:45:38,451 INFO L226 Difference]: Without dead ends: 131 [2018-09-26 21:45:38,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-26 21:45:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-26 21:45:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-26 21:45:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-09-26 21:45:38,459 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-09-26 21:45:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:38,459 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-09-26 21:45:38,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-26 21:45:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-09-26 21:45:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-26 21:45:38,461 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:38,461 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:38,461 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:38,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-09-26 21:45:38,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:38,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:38,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:38,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:38,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:39,202 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:39,202 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-09-26 21:45:39,209 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:45:39,290 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:45:39,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:39,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:39,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:39,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-26 21:45:39,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-26 21:45:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-26 21:45:39,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:39,586 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-09-26 21:45:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:40,223 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-09-26 21:45:40,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-26 21:45:40,223 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-09-26 21:45:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:40,224 INFO L225 Difference]: With dead ends: 147 [2018-09-26 21:45:40,224 INFO L226 Difference]: Without dead ends: 133 [2018-09-26 21:45:40,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-26 21:45:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-26 21:45:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-26 21:45:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-09-26 21:45:40,231 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-09-26 21:45:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:40,231 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-09-26 21:45:40,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-26 21:45:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-09-26 21:45:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-26 21:45:40,232 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:40,232 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:40,232 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:40,232 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:40,233 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-09-26 21:45:40,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:40,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:40,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:40,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:40,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:40,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:40,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:40,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:45:40,833 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-09-26 21:45:40,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:40,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:41,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:41,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-26 21:45:41,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-26 21:45:41,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-26 21:45:41,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:41,142 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-09-26 21:45:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:41,849 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-09-26 21:45:41,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-26 21:45:41,849 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-09-26 21:45:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:41,850 INFO L225 Difference]: With dead ends: 149 [2018-09-26 21:45:41,850 INFO L226 Difference]: Without dead ends: 135 [2018-09-26 21:45:41,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-26 21:45:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-26 21:45:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-26 21:45:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-09-26 21:45:41,855 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-09-26 21:45:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:41,855 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-09-26 21:45:41,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-26 21:45:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-09-26 21:45:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-26 21:45:41,856 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:41,856 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:41,856 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:41,856 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:41,856 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-09-26 21:45:41,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:41,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:41,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:41,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:41,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:42,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:42,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:42,391 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:45:42,479 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:45:42,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:42,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:42,926 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:42,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-26 21:45:42,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-26 21:45:42,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-26 21:45:42,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:42,928 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-09-26 21:45:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:43,461 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-09-26 21:45:43,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-26 21:45:43,461 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-09-26 21:45:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:43,462 INFO L225 Difference]: With dead ends: 151 [2018-09-26 21:45:43,462 INFO L226 Difference]: Without dead ends: 137 [2018-09-26 21:45:43,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-26 21:45:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-26 21:45:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-26 21:45:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-09-26 21:45:43,467 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-09-26 21:45:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:43,468 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-09-26 21:45:43,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-26 21:45:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-09-26 21:45:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-26 21:45:43,468 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:43,468 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:43,469 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:43,469 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-09-26 21:45:43,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:43,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:43,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:43,902 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:43,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:43,910 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:45:44,061 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-26 21:45:44,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:44,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:44,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:44,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-26 21:45:44,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-26 21:45:44,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-26 21:45:44,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:44,542 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-09-26 21:45:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:45,294 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-09-26 21:45:45,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-26 21:45:45,295 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-09-26 21:45:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:45,295 INFO L225 Difference]: With dead ends: 153 [2018-09-26 21:45:45,295 INFO L226 Difference]: Without dead ends: 139 [2018-09-26 21:45:45,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-26 21:45:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-26 21:45:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-26 21:45:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-09-26 21:45:45,300 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-09-26 21:45:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:45,300 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-09-26 21:45:45,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-26 21:45:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-09-26 21:45:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-26 21:45:45,301 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:45,301 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:45,302 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:45,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:45,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-09-26 21:45:45,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:45,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:45,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:45,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:45,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:45,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:45,756 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:45,764 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:45:45,924 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-09-26 21:45:45,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:45,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:46,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:46,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-26 21:45:46,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-26 21:45:46,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-26 21:45:46,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:46,260 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-09-26 21:45:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:46,979 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-09-26 21:45:46,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-26 21:45:46,980 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-09-26 21:45:46,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:46,980 INFO L225 Difference]: With dead ends: 155 [2018-09-26 21:45:46,981 INFO L226 Difference]: Without dead ends: 141 [2018-09-26 21:45:46,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:46,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-26 21:45:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-26 21:45:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-26 21:45:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-09-26 21:45:46,986 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-09-26 21:45:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:46,986 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-09-26 21:45:46,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-26 21:45:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-09-26 21:45:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-26 21:45:46,987 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:46,987 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:46,987 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:46,987 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-09-26 21:45:46,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:46,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:46,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:46,989 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:46,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:47,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:47,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:47,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:47,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:47,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:47,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-26 21:45:47,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-26 21:45:47,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-26 21:45:47,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:47,980 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-09-26 21:45:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:48,833 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-09-26 21:45:48,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-26 21:45:48,834 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-09-26 21:45:48,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:48,834 INFO L225 Difference]: With dead ends: 157 [2018-09-26 21:45:48,835 INFO L226 Difference]: Without dead ends: 143 [2018-09-26 21:45:48,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-26 21:45:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-26 21:45:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-26 21:45:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-09-26 21:45:48,839 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-09-26 21:45:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:48,840 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-09-26 21:45:48,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-26 21:45:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-09-26 21:45:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-26 21:45:48,841 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:48,841 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:48,841 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:48,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-09-26 21:45:48,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:48,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:48,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:48,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:48,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:49,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:49,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:49,476 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:45:49,565 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:45:49,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:49,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:49,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:49,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-26 21:45:49,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-26 21:45:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-26 21:45:49,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:49,911 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-09-26 21:45:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:51,209 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-09-26 21:45:51,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-26 21:45:51,209 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-09-26 21:45:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:51,210 INFO L225 Difference]: With dead ends: 159 [2018-09-26 21:45:51,210 INFO L226 Difference]: Without dead ends: 145 [2018-09-26 21:45:51,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:51,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-26 21:45:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-26 21:45:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-26 21:45:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-09-26 21:45:51,216 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-09-26 21:45:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:51,217 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-09-26 21:45:51,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-26 21:45:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-09-26 21:45:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-26 21:45:51,217 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:51,217 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:51,218 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:51,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-09-26 21:45:51,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:51,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:51,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:51,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:51,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:51,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:51,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:51,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:45:51,878 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-09-26 21:45:51,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:51,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:52,263 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:52,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-26 21:45:52,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-26 21:45:52,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-26 21:45:52,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:52,264 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-09-26 21:45:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:53,202 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-09-26 21:45:53,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-26 21:45:53,202 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-09-26 21:45:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:53,203 INFO L225 Difference]: With dead ends: 161 [2018-09-26 21:45:53,203 INFO L226 Difference]: Without dead ends: 147 [2018-09-26 21:45:53,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-26 21:45:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-26 21:45:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-26 21:45:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-09-26 21:45:53,210 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-09-26 21:45:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:53,210 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-09-26 21:45:53,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-26 21:45:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-09-26 21:45:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-26 21:45:53,211 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:53,211 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:53,212 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:53,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:53,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-09-26 21:45:53,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:53,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:53,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:53,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:53,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:53,722 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:53,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:53,729 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:45:53,822 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:45:53,822 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:53,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:54,203 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:54,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-26 21:45:54,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-26 21:45:54,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-26 21:45:54,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:54,204 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-09-26 21:45:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:54,986 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-09-26 21:45:54,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-26 21:45:54,986 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-09-26 21:45:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:54,987 INFO L225 Difference]: With dead ends: 163 [2018-09-26 21:45:54,987 INFO L226 Difference]: Without dead ends: 149 [2018-09-26 21:45:54,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-26 21:45:54,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-26 21:45:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-26 21:45:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-09-26 21:45:54,993 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-09-26 21:45:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:54,993 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-09-26 21:45:54,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-26 21:45:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-09-26 21:45:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-26 21:45:54,994 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:54,994 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:54,995 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:54,995 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-09-26 21:45:54,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:54,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:54,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:54,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:54,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:55,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:55,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:55,527 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:45:55,712 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-26 21:45:55,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:55,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:56,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:56,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-26 21:45:56,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-26 21:45:56,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-26 21:45:56,118 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:56,118 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-09-26 21:45:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:56,713 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-09-26 21:45:56,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-26 21:45:56,713 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-09-26 21:45:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:56,714 INFO L225 Difference]: With dead ends: 165 [2018-09-26 21:45:56,714 INFO L226 Difference]: Without dead ends: 151 [2018-09-26 21:45:56,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-26 21:45:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-26 21:45:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-26 21:45:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-09-26 21:45:56,721 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-09-26 21:45:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:56,721 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-09-26 21:45:56,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-26 21:45:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-09-26 21:45:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-26 21:45:56,722 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:56,722 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:56,723 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:56,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:56,723 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-09-26 21:45:56,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:56,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:56,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:56,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:56,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:57,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:57,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:57,247 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:45:57,428 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-09-26 21:45:57,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:45:57,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:57,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:57,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-26 21:45:57,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-26 21:45:57,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-26 21:45:57,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:57,815 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-09-26 21:45:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:58,736 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-09-26 21:45:58,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-26 21:45:58,736 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-09-26 21:45:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:58,737 INFO L225 Difference]: With dead ends: 167 [2018-09-26 21:45:58,737 INFO L226 Difference]: Without dead ends: 153 [2018-09-26 21:45:58,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-26 21:45:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-26 21:45:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-26 21:45:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-09-26 21:45:58,742 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-09-26 21:45:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:58,742 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-09-26 21:45:58,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-26 21:45:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-09-26 21:45:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-26 21:45:58,743 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:58,743 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:45:58,743 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:58,743 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:58,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-09-26 21:45:58,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:58,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:58,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:58,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:45:58,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:59,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:59,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:45:59,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:59,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:45:59,774 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:45:59,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-26 21:45:59,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-26 21:45:59,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-26 21:45:59,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:59,776 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-09-26 21:46:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:00,626 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-09-26 21:46:00,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-26 21:46:00,626 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-09-26 21:46:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:00,627 INFO L225 Difference]: With dead ends: 169 [2018-09-26 21:46:00,627 INFO L226 Difference]: Without dead ends: 155 [2018-09-26 21:46:00,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-26 21:46:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-26 21:46:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-26 21:46:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-09-26 21:46:00,632 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-09-26 21:46:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:00,632 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-09-26 21:46:00,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-26 21:46:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-09-26 21:46:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-26 21:46:00,633 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:00,633 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:00,633 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:00,633 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:00,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-09-26 21:46:00,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:00,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:00,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:00,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:00,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:01,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:01,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:01,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:46:01,254 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:46:01,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:01,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:01,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:01,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-26 21:46:01,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-26 21:46:01,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-26 21:46:01,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:01,887 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-09-26 21:46:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:02,628 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-09-26 21:46:02,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-26 21:46:02,628 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-09-26 21:46:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:02,629 INFO L225 Difference]: With dead ends: 171 [2018-09-26 21:46:02,629 INFO L226 Difference]: Without dead ends: 157 [2018-09-26 21:46:02,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-26 21:46:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-26 21:46:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-26 21:46:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-09-26 21:46:02,634 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-09-26 21:46:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:02,634 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-09-26 21:46:02,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-26 21:46:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-09-26 21:46:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-26 21:46:02,634 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:02,634 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:02,635 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:02,635 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:02,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-09-26 21:46:02,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:02,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:02,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:02,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:02,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:03,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:03,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:03,319 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:46:03,517 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-09-26 21:46:03,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:03,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:03,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:03,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-26 21:46:03,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-26 21:46:03,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-26 21:46:03,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:03,892 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-09-26 21:46:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:04,621 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-09-26 21:46:04,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-26 21:46:04,622 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-09-26 21:46:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:04,622 INFO L225 Difference]: With dead ends: 173 [2018-09-26 21:46:04,622 INFO L226 Difference]: Without dead ends: 159 [2018-09-26 21:46:04,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-26 21:46:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-26 21:46:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-26 21:46:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-09-26 21:46:04,627 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-09-26 21:46:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:04,628 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-09-26 21:46:04,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-26 21:46:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-09-26 21:46:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-26 21:46:04,628 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:04,628 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:04,629 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:04,629 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:04,629 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-09-26 21:46:04,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:04,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:04,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:04,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:04,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:05,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:05,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:05,186 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:46:05,284 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:46:05,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:05,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:05,733 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:05,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-26 21:46:05,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-26 21:46:05,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-26 21:46:05,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:05,735 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-09-26 21:46:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:06,586 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-09-26 21:46:06,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-26 21:46:06,587 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-09-26 21:46:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:06,588 INFO L225 Difference]: With dead ends: 175 [2018-09-26 21:46:06,588 INFO L226 Difference]: Without dead ends: 161 [2018-09-26 21:46:06,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-26 21:46:06,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-26 21:46:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-26 21:46:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-09-26 21:46:06,595 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-09-26 21:46:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:06,595 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-09-26 21:46:06,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-26 21:46:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-09-26 21:46:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-26 21:46:06,596 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:06,596 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:06,596 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:06,596 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-09-26 21:46:06,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:06,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:06,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:06,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:06,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:07,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:07,152 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:07,160 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:46:07,353 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-26 21:46:07,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:07,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:07,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:07,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-26 21:46:07,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-26 21:46:07,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-26 21:46:07,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:07,794 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-09-26 21:46:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:08,739 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-09-26 21:46:08,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-26 21:46:08,740 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-09-26 21:46:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:08,741 INFO L225 Difference]: With dead ends: 177 [2018-09-26 21:46:08,741 INFO L226 Difference]: Without dead ends: 163 [2018-09-26 21:46:08,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-26 21:46:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-26 21:46:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-26 21:46:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-09-26 21:46:08,749 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-09-26 21:46:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:08,750 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-09-26 21:46:08,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-26 21:46:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-09-26 21:46:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-26 21:46:08,751 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:08,751 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:08,751 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:08,751 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-09-26 21:46:08,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:08,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:08,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:08,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:08,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:09,364 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:09,364 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:09,371 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:46:09,587 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-09-26 21:46:09,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:09,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:09,988 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:09,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-26 21:46:09,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-26 21:46:09,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-26 21:46:09,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:09,990 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-09-26 21:46:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:10,618 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-09-26 21:46:10,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-26 21:46:10,618 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-09-26 21:46:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:10,619 INFO L225 Difference]: With dead ends: 179 [2018-09-26 21:46:10,619 INFO L226 Difference]: Without dead ends: 165 [2018-09-26 21:46:10,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-09-26 21:46:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-09-26 21:46:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-09-26 21:46:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-09-26 21:46:10,624 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-09-26 21:46:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:10,624 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-09-26 21:46:10,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-26 21:46:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-09-26 21:46:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-26 21:46:10,625 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:10,626 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:10,626 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:10,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-09-26 21:46:10,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:10,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:10,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:10,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:10,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:11,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:11,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:11,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:11,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:11,856 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:11,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-26 21:46:11,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-26 21:46:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-26 21:46:11,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:11,857 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-09-26 21:46:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:12,838 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-09-26 21:46:12,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-26 21:46:12,838 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-09-26 21:46:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:12,839 INFO L225 Difference]: With dead ends: 181 [2018-09-26 21:46:12,839 INFO L226 Difference]: Without dead ends: 167 [2018-09-26 21:46:12,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-26 21:46:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-26 21:46:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-26 21:46:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-09-26 21:46:12,844 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-09-26 21:46:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:12,844 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-09-26 21:46:12,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-26 21:46:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-09-26 21:46:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-26 21:46:12,845 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:12,845 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:12,845 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:12,845 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:12,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-09-26 21:46:12,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:12,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:12,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:12,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:12,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:13,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:13,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:13,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:46:13,671 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:46:13,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:13,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:14,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:14,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-26 21:46:14,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-26 21:46:14,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-26 21:46:14,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:14,089 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-09-26 21:46:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:14,942 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-09-26 21:46:14,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-26 21:46:14,942 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-09-26 21:46:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:14,943 INFO L225 Difference]: With dead ends: 183 [2018-09-26 21:46:14,943 INFO L226 Difference]: Without dead ends: 169 [2018-09-26 21:46:14,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-09-26 21:46:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-09-26 21:46:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-26 21:46:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-09-26 21:46:14,947 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-09-26 21:46:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:14,947 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-09-26 21:46:14,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-26 21:46:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-09-26 21:46:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-26 21:46:14,948 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:14,948 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:14,948 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:14,948 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-09-26 21:46:14,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:14,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:14,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:14,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:14,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:15,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:15,557 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:15,564 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:46:15,787 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-09-26 21:46:15,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:15,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:16,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:16,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-26 21:46:16,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-26 21:46:16,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-26 21:46:16,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:16,191 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-09-26 21:46:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:16,878 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-09-26 21:46:16,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-26 21:46:16,878 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-09-26 21:46:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:16,879 INFO L225 Difference]: With dead ends: 185 [2018-09-26 21:46:16,879 INFO L226 Difference]: Without dead ends: 171 [2018-09-26 21:46:16,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-26 21:46:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-26 21:46:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-26 21:46:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-09-26 21:46:16,884 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-09-26 21:46:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:16,884 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-09-26 21:46:16,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-26 21:46:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-09-26 21:46:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-26 21:46:16,885 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:16,885 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:16,885 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:16,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-09-26 21:46:16,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:16,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:16,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:16,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:16,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:17,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:17,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:17,519 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:46:17,624 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:46:17,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:17,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:18,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:18,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-26 21:46:18,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-26 21:46:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-26 21:46:18,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:18,051 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-09-26 21:46:18,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:18,853 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-09-26 21:46:18,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-26 21:46:18,853 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-09-26 21:46:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:18,854 INFO L225 Difference]: With dead ends: 187 [2018-09-26 21:46:18,854 INFO L226 Difference]: Without dead ends: 173 [2018-09-26 21:46:18,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-26 21:46:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-09-26 21:46:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-26 21:46:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-09-26 21:46:18,860 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-09-26 21:46:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:18,861 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-09-26 21:46:18,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-26 21:46:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-09-26 21:46:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-26 21:46:18,862 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:18,862 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:18,862 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:18,862 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-09-26 21:46:18,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:18,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:18,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:18,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:18,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:19,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:19,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:19,568 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:46:19,787 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-09-26 21:46:19,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:19,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:20,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:20,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-26 21:46:20,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-26 21:46:20,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-26 21:46:20,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:20,222 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-09-26 21:46:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:20,918 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-09-26 21:46:20,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-26 21:46:20,919 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-09-26 21:46:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:20,920 INFO L225 Difference]: With dead ends: 189 [2018-09-26 21:46:20,920 INFO L226 Difference]: Without dead ends: 175 [2018-09-26 21:46:20,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-26 21:46:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-26 21:46:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-26 21:46:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-09-26 21:46:20,927 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-09-26 21:46:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:20,927 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-09-26 21:46:20,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-26 21:46:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-09-26 21:46:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-26 21:46:20,928 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:20,928 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:20,929 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:20,929 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-09-26 21:46:20,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:20,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:20,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:20,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:20,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:21,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:21,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:21,605 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:46:21,832 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-09-26 21:46:21,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:21,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:22,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:22,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-26 21:46:22,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-26 21:46:22,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-26 21:46:22,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:22,266 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-09-26 21:46:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:23,135 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-09-26 21:46:23,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-26 21:46:23,135 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-09-26 21:46:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:23,136 INFO L225 Difference]: With dead ends: 191 [2018-09-26 21:46:23,136 INFO L226 Difference]: Without dead ends: 177 [2018-09-26 21:46:23,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:23,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-09-26 21:46:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-09-26 21:46:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-09-26 21:46:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-09-26 21:46:23,141 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-09-26 21:46:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:23,141 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-09-26 21:46:23,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-26 21:46:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-09-26 21:46:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-26 21:46:23,142 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:23,142 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:23,143 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:23,143 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:23,143 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-09-26 21:46:23,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:23,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:23,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:23,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:23,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:23,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:23,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:23,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:24,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:24,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:24,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-26 21:46:24,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-26 21:46:24,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-26 21:46:24,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:24,559 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-09-26 21:46:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:25,438 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-09-26 21:46:25,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-26 21:46:25,438 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-09-26 21:46:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:25,439 INFO L225 Difference]: With dead ends: 193 [2018-09-26 21:46:25,439 INFO L226 Difference]: Without dead ends: 179 [2018-09-26 21:46:25,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-26 21:46:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-26 21:46:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-26 21:46:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-09-26 21:46:25,444 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-09-26 21:46:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:25,444 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-09-26 21:46:25,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-26 21:46:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-09-26 21:46:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-26 21:46:25,445 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:25,445 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:25,445 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:25,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:25,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-09-26 21:46:25,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:25,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:25,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:26,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:26,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:26,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:46:26,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:46:26,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:26,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:26,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:26,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-26 21:46:26,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-26 21:46:26,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-26 21:46:26,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:26,706 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-09-26 21:46:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:27,593 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-09-26 21:46:27,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-26 21:46:27,593 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-09-26 21:46:27,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:27,594 INFO L225 Difference]: With dead ends: 195 [2018-09-26 21:46:27,594 INFO L226 Difference]: Without dead ends: 181 [2018-09-26 21:46:27,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-09-26 21:46:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-09-26 21:46:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-26 21:46:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-09-26 21:46:27,599 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-09-26 21:46:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:27,600 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-09-26 21:46:27,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-26 21:46:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-09-26 21:46:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-26 21:46:27,600 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:27,600 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:27,601 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:27,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:27,601 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-09-26 21:46:27,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:27,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:27,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:27,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:27,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:28,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:28,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:28,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:46:28,536 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-09-26 21:46:28,537 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:28,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:29,203 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:29,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-26 21:46:29,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-26 21:46:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-26 21:46:29,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:29,205 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-09-26 21:46:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:29,944 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-09-26 21:46:29,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-26 21:46:29,944 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-09-26 21:46:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:29,945 INFO L225 Difference]: With dead ends: 197 [2018-09-26 21:46:29,945 INFO L226 Difference]: Without dead ends: 183 [2018-09-26 21:46:29,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-26 21:46:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-26 21:46:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-26 21:46:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-09-26 21:46:29,951 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-09-26 21:46:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:29,952 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-09-26 21:46:29,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-26 21:46:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-09-26 21:46:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-26 21:46:29,953 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:29,953 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:29,953 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:29,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-09-26 21:46:29,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:29,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:29,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:29,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:29,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:30,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:30,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:30,659 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:46:30,775 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:46:30,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:30,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:31,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:31,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-26 21:46:31,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-26 21:46:31,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-26 21:46:31,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:31,250 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-09-26 21:46:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:32,213 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-09-26 21:46:32,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-26 21:46:32,214 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-09-26 21:46:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:32,215 INFO L225 Difference]: With dead ends: 199 [2018-09-26 21:46:32,215 INFO L226 Difference]: Without dead ends: 185 [2018-09-26 21:46:32,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-26 21:46:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-09-26 21:46:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-26 21:46:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-09-26 21:46:32,220 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-09-26 21:46:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:32,221 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-09-26 21:46:32,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-26 21:46:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-09-26 21:46:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-26 21:46:32,222 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:32,222 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:32,222 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:32,222 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-09-26 21:46:32,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:32,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:32,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:32,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:32,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:32,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:32,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:32,956 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:46:33,203 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-09-26 21:46:33,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:33,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:33,724 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:33,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-26 21:46:33,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-26 21:46:33,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-26 21:46:33,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:33,727 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-09-26 21:46:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:34,812 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-09-26 21:46:34,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-26 21:46:34,812 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-09-26 21:46:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:34,813 INFO L225 Difference]: With dead ends: 201 [2018-09-26 21:46:34,813 INFO L226 Difference]: Without dead ends: 187 [2018-09-26 21:46:34,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-26 21:46:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-26 21:46:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-26 21:46:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-09-26 21:46:34,821 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-09-26 21:46:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:34,821 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-09-26 21:46:34,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-26 21:46:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-09-26 21:46:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-26 21:46:34,822 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:34,822 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:34,822 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:34,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-09-26 21:46:34,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:34,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:34,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:34,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:34,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:35,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:35,566 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:35,585 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:46:35,839 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-09-26 21:46:35,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:35,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:36,330 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:36,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-26 21:46:36,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-26 21:46:36,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-26 21:46:36,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:36,332 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-09-26 21:46:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:37,119 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-09-26 21:46:37,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-26 21:46:37,120 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-09-26 21:46:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:37,121 INFO L225 Difference]: With dead ends: 203 [2018-09-26 21:46:37,121 INFO L226 Difference]: Without dead ends: 189 [2018-09-26 21:46:37,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-09-26 21:46:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-09-26 21:46:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-26 21:46:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-09-26 21:46:37,128 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-09-26 21:46:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:37,129 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-09-26 21:46:37,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-26 21:46:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-09-26 21:46:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-26 21:46:37,130 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:37,130 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:37,130 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:37,130 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-09-26 21:46:37,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:37,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:37,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:37,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:37,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:37,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:37,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:37,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:38,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:38,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:38,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-26 21:46:38,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-26 21:46:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-26 21:46:38,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:38,539 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-09-26 21:46:39,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:39,349 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-09-26 21:46:39,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-26 21:46:39,349 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-09-26 21:46:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:39,350 INFO L225 Difference]: With dead ends: 205 [2018-09-26 21:46:39,350 INFO L226 Difference]: Without dead ends: 191 [2018-09-26 21:46:39,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:39,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-26 21:46:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-26 21:46:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-26 21:46:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-09-26 21:46:39,358 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-09-26 21:46:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:39,358 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-09-26 21:46:39,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-26 21:46:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-09-26 21:46:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-26 21:46:39,359 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:39,359 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:39,359 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:39,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:39,360 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-09-26 21:46:39,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:39,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:39,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:39,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:39,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:40,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:40,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:40,130 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:46:40,253 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:46:40,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:40,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:40,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:40,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-26 21:46:40,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-26 21:46:40,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-26 21:46:40,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:40,790 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-09-26 21:46:41,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:41,890 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-09-26 21:46:41,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-26 21:46:41,890 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-09-26 21:46:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:41,891 INFO L225 Difference]: With dead ends: 207 [2018-09-26 21:46:41,891 INFO L226 Difference]: Without dead ends: 193 [2018-09-26 21:46:41,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-26 21:46:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-09-26 21:46:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-26 21:46:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-09-26 21:46:41,897 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-09-26 21:46:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:41,897 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-09-26 21:46:41,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-26 21:46:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-09-26 21:46:41,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-26 21:46:41,898 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:41,898 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:41,898 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:41,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:41,898 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-09-26 21:46:41,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:41,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:41,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:41,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:41,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:42,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:42,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:42,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:46:42,985 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-09-26 21:46:42,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:42,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:43,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:43,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-26 21:46:43,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-26 21:46:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-26 21:46:43,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:43,509 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-09-26 21:46:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:44,336 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-09-26 21:46:44,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-26 21:46:44,336 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-09-26 21:46:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:44,337 INFO L225 Difference]: With dead ends: 209 [2018-09-26 21:46:44,337 INFO L226 Difference]: Without dead ends: 195 [2018-09-26 21:46:44,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-26 21:46:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-26 21:46:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-26 21:46:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-09-26 21:46:44,345 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-09-26 21:46:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:44,345 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-09-26 21:46:44,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-26 21:46:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-09-26 21:46:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-26 21:46:44,346 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:44,347 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:44,347 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:44,347 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:44,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-09-26 21:46:44,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:44,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:44,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:44,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:44,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:45,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:45,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:45,186 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:46:45,308 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:46:45,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:45,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:45,829 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:45,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-26 21:46:45,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-26 21:46:45,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-26 21:46:45,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:45,831 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-09-26 21:46:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:46,963 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-09-26 21:46:46,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-26 21:46:46,963 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-09-26 21:46:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:46,964 INFO L225 Difference]: With dead ends: 211 [2018-09-26 21:46:46,964 INFO L226 Difference]: Without dead ends: 197 [2018-09-26 21:46:46,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-09-26 21:46:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-09-26 21:46:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-09-26 21:46:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-09-26 21:46:46,970 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-09-26 21:46:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:46,970 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-09-26 21:46:46,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-26 21:46:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-09-26 21:46:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-26 21:46:46,971 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:46,971 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:46,971 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:46,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:46,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-09-26 21:46:46,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:46,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:46,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:46,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:46,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:47,778 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:47,778 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:47,786 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:46:48,057 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-09-26 21:46:48,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:48,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:48,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:48,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-26 21:46:48,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-26 21:46:48,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-26 21:46:48,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:48,600 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-09-26 21:46:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:49,674 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-09-26 21:46:49,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-26 21:46:49,675 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-09-26 21:46:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:49,675 INFO L225 Difference]: With dead ends: 213 [2018-09-26 21:46:49,676 INFO L226 Difference]: Without dead ends: 199 [2018-09-26 21:46:49,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-26 21:46:49,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-26 21:46:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-26 21:46:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-09-26 21:46:49,681 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-09-26 21:46:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:49,682 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-09-26 21:46:49,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-26 21:46:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-09-26 21:46:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-26 21:46:49,682 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:49,682 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:49,683 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:49,683 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-09-26 21:46:49,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:49,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:49,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:49,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:49,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:50,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:50,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:50,522 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:46:50,803 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-09-26 21:46:50,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:50,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:51,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:51,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-26 21:46:51,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-26 21:46:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-26 21:46:51,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:51,357 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-09-26 21:46:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:52,479 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-09-26 21:46:52,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-26 21:46:52,479 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-09-26 21:46:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:52,480 INFO L225 Difference]: With dead ends: 215 [2018-09-26 21:46:52,480 INFO L226 Difference]: Without dead ends: 201 [2018-09-26 21:46:52,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-09-26 21:46:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-09-26 21:46:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-09-26 21:46:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-09-26 21:46:52,486 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-09-26 21:46:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:52,486 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-09-26 21:46:52,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-26 21:46:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-09-26 21:46:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-26 21:46:52,487 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:52,487 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:52,487 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:52,487 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-09-26 21:46:52,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:52,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:52,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:52,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:52,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:53,328 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:53,328 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:53,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:53,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:54,090 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:54,090 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-26 21:46:54,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-26 21:46:54,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-26 21:46:54,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:54,092 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-09-26 21:46:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:55,383 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-09-26 21:46:55,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-26 21:46:55,384 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-09-26 21:46:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:55,385 INFO L225 Difference]: With dead ends: 217 [2018-09-26 21:46:55,385 INFO L226 Difference]: Without dead ends: 203 [2018-09-26 21:46:55,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-26 21:46:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-26 21:46:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-26 21:46:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-09-26 21:46:55,391 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-09-26 21:46:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:55,391 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-09-26 21:46:55,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-26 21:46:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-09-26 21:46:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-26 21:46:55,392 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:55,392 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:55,392 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:55,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-09-26 21:46:55,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:55,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:55,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:55,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:46:55,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:56,278 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:56,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:56,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:46:56,418 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:46:56,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:56,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:46:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:57,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:46:57,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-26 21:46:57,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-26 21:46:57,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-26 21:46:57,006 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:46:57,006 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-09-26 21:46:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:46:58,263 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-09-26 21:46:58,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-26 21:46:58,264 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-09-26 21:46:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:46:58,264 INFO L225 Difference]: With dead ends: 219 [2018-09-26 21:46:58,265 INFO L226 Difference]: Without dead ends: 205 [2018-09-26 21:46:58,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:46:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-09-26 21:46:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-09-26 21:46:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-26 21:46:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-09-26 21:46:58,270 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-09-26 21:46:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:46:58,271 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-09-26 21:46:58,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-26 21:46:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-09-26 21:46:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-26 21:46:58,271 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:46:58,271 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:46:58,272 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:46:58,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:46:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-09-26 21:46:58,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:46:58,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:46:58,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:58,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:46:58,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:46:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:46:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:46:59,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:46:59,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:46:59,172 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:46:59,502 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-09-26 21:46:59,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:46:59,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:00,105 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:00,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-26 21:47:00,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-26 21:47:00,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-26 21:47:00,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:00,108 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-09-26 21:47:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:01,060 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-09-26 21:47:01,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-26 21:47:01,060 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-09-26 21:47:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:01,061 INFO L225 Difference]: With dead ends: 221 [2018-09-26 21:47:01,061 INFO L226 Difference]: Without dead ends: 207 [2018-09-26 21:47:01,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:01,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-26 21:47:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-26 21:47:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-26 21:47:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-09-26 21:47:01,070 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-09-26 21:47:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:01,071 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-09-26 21:47:01,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-26 21:47:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-09-26 21:47:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-26 21:47:01,072 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:01,072 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:01,072 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:01,072 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-09-26 21:47:01,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:01,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:01,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:01,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:01,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:01,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:01,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:01,963 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:47:02,094 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:47:02,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:02,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:02,711 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:02,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-26 21:47:02,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-26 21:47:02,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-26 21:47:02,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:02,714 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-09-26 21:47:04,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:04,087 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-09-26 21:47:04,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-26 21:47:04,087 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-09-26 21:47:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:04,088 INFO L225 Difference]: With dead ends: 223 [2018-09-26 21:47:04,088 INFO L226 Difference]: Without dead ends: 209 [2018-09-26 21:47:04,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-26 21:47:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-09-26 21:47:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-26 21:47:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-09-26 21:47:04,094 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-09-26 21:47:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:04,095 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-09-26 21:47:04,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-26 21:47:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-09-26 21:47:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-26 21:47:04,095 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:04,096 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:04,096 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:04,096 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-09-26 21:47:04,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:04,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:04,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:05,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:05,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:05,204 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:47:05,517 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-09-26 21:47:05,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:05,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:06,153 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:06,153 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-26 21:47:06,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-26 21:47:06,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-26 21:47:06,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:06,155 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-09-26 21:47:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:07,220 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-09-26 21:47:07,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-26 21:47:07,221 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-09-26 21:47:07,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:07,222 INFO L225 Difference]: With dead ends: 225 [2018-09-26 21:47:07,222 INFO L226 Difference]: Without dead ends: 211 [2018-09-26 21:47:07,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-26 21:47:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-26 21:47:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-26 21:47:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-09-26 21:47:07,228 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-09-26 21:47:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:07,228 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-09-26 21:47:07,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-26 21:47:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-09-26 21:47:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-26 21:47:07,229 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:07,229 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:07,229 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:07,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:07,229 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-09-26 21:47:07,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:07,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:07,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:08,156 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:08,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:08,165 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:47:08,483 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-09-26 21:47:08,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:08,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:09,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:09,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-26 21:47:09,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-26 21:47:09,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-26 21:47:09,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:09,113 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-09-26 21:47:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:10,405 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-09-26 21:47:10,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-26 21:47:10,406 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-09-26 21:47:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:10,407 INFO L225 Difference]: With dead ends: 227 [2018-09-26 21:47:10,407 INFO L226 Difference]: Without dead ends: 213 [2018-09-26 21:47:10,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-26 21:47:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-09-26 21:47:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-26 21:47:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-09-26 21:47:10,413 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-09-26 21:47:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:10,414 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-09-26 21:47:10,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-26 21:47:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-09-26 21:47:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-26 21:47:10,415 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:10,415 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:10,415 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:10,415 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:10,415 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-09-26 21:47:10,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:10,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:10,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:10,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:10,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:11,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:11,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:11,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:47:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:11,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:12,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:12,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-26 21:47:12,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-26 21:47:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-26 21:47:12,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:12,223 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-09-26 21:47:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:13,333 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-09-26 21:47:13,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-26 21:47:13,333 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-09-26 21:47:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:13,334 INFO L225 Difference]: With dead ends: 229 [2018-09-26 21:47:13,334 INFO L226 Difference]: Without dead ends: 215 [2018-09-26 21:47:13,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:13,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-26 21:47:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-26 21:47:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-26 21:47:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-09-26 21:47:13,343 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-09-26 21:47:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:13,343 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-09-26 21:47:13,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-26 21:47:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-09-26 21:47:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-26 21:47:13,344 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:13,344 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:13,345 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:13,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:13,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-09-26 21:47:13,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:13,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:13,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:13,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:47:13,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:14,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:14,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:14,420 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:47:14,565 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:47:14,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:14,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:15,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:15,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-26 21:47:15,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-26 21:47:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-26 21:47:15,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:15,281 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-09-26 21:47:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:16,619 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-09-26 21:47:16,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-26 21:47:16,619 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-09-26 21:47:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:16,620 INFO L225 Difference]: With dead ends: 231 [2018-09-26 21:47:16,620 INFO L226 Difference]: Without dead ends: 217 [2018-09-26 21:47:16,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-09-26 21:47:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-09-26 21:47:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-09-26 21:47:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-09-26 21:47:16,629 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-09-26 21:47:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:16,630 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-09-26 21:47:16,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-26 21:47:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-09-26 21:47:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-26 21:47:16,631 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:16,631 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:16,631 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:16,631 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-09-26 21:47:16,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:16,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:16,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:16,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:16,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:17,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:17,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:17,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:47:17,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-09-26 21:47:17,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:17,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:18,654 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:18,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-26 21:47:18,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-26 21:47:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-26 21:47:18,656 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:18,656 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-09-26 21:47:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:19,798 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-09-26 21:47:19,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-26 21:47:19,798 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-09-26 21:47:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:19,799 INFO L225 Difference]: With dead ends: 233 [2018-09-26 21:47:19,799 INFO L226 Difference]: Without dead ends: 219 [2018-09-26 21:47:19,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-26 21:47:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-26 21:47:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-26 21:47:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-09-26 21:47:19,807 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-09-26 21:47:19,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:19,808 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-09-26 21:47:19,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-26 21:47:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-09-26 21:47:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-26 21:47:19,809 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:19,809 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:19,809 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:19,809 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:19,810 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-09-26 21:47:19,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:19,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:19,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:19,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:19,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:20,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:20,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:20,908 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:47:21,050 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:47:21,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:21,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:21,817 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:21,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-26 21:47:21,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-26 21:47:21,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-26 21:47:21,820 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:21,820 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-09-26 21:47:23,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:23,233 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-09-26 21:47:23,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-26 21:47:23,233 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-09-26 21:47:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:23,234 INFO L225 Difference]: With dead ends: 235 [2018-09-26 21:47:23,234 INFO L226 Difference]: Without dead ends: 221 [2018-09-26 21:47:23,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-26 21:47:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-09-26 21:47:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-26 21:47:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-09-26 21:47:23,240 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-09-26 21:47:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:23,240 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-09-26 21:47:23,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-26 21:47:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-09-26 21:47:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-26 21:47:23,241 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:23,241 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:23,242 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:23,242 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-09-26 21:47:23,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:23,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:23,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:23,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:23,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:24,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:24,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:24,272 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:47:24,613 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-09-26 21:47:24,613 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:24,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:25,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:25,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-26 21:47:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-26 21:47:25,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-26 21:47:25,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:25,380 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-09-26 21:47:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:26,788 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-09-26 21:47:26,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-26 21:47:26,788 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-09-26 21:47:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:26,789 INFO L225 Difference]: With dead ends: 237 [2018-09-26 21:47:26,789 INFO L226 Difference]: Without dead ends: 223 [2018-09-26 21:47:26,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-26 21:47:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-26 21:47:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-26 21:47:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-09-26 21:47:26,796 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-09-26 21:47:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:26,796 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-09-26 21:47:26,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-26 21:47:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-09-26 21:47:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-26 21:47:26,797 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:26,797 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:26,797 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:26,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-09-26 21:47:26,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:26,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:26,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:26,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:26,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:27,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:27,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:27,833 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:47:28,186 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-09-26 21:47:28,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:28,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:28,873 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:28,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-26 21:47:28,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-26 21:47:28,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-26 21:47:28,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:28,875 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-09-26 21:47:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:30,500 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-09-26 21:47:30,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-26 21:47:30,501 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-09-26 21:47:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:30,501 INFO L225 Difference]: With dead ends: 239 [2018-09-26 21:47:30,502 INFO L226 Difference]: Without dead ends: 225 [2018-09-26 21:47:30,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-09-26 21:47:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-09-26 21:47:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-09-26 21:47:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-09-26 21:47:30,510 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-09-26 21:47:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:30,510 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-09-26 21:47:30,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-26 21:47:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-09-26 21:47:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-26 21:47:30,511 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:30,512 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:30,512 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:30,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-09-26 21:47:30,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:30,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:30,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:30,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:30,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:31,598 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:31,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:31,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:47:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:31,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:32,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:32,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-26 21:47:32,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-26 21:47:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-26 21:47:32,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:32,449 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-09-26 21:47:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:33,745 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-09-26 21:47:33,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-26 21:47:33,745 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-09-26 21:47:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:33,746 INFO L225 Difference]: With dead ends: 241 [2018-09-26 21:47:33,746 INFO L226 Difference]: Without dead ends: 227 [2018-09-26 21:47:33,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-26 21:47:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-26 21:47:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-26 21:47:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-09-26 21:47:33,755 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-09-26 21:47:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:33,755 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-09-26 21:47:33,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-26 21:47:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-09-26 21:47:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-26 21:47:33,756 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:33,756 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:33,756 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:33,757 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-09-26 21:47:33,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:33,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:33,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:33,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:47:33,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:34,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:34,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:34,867 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:47:35,020 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:47:35,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:35,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:35,814 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:35,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-26 21:47:35,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-26 21:47:35,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-26 21:47:35,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:35,816 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-09-26 21:47:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:37,146 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-09-26 21:47:37,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-26 21:47:37,146 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-09-26 21:47:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:37,147 INFO L225 Difference]: With dead ends: 243 [2018-09-26 21:47:37,147 INFO L226 Difference]: Without dead ends: 229 [2018-09-26 21:47:37,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-09-26 21:47:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-09-26 21:47:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-26 21:47:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-09-26 21:47:37,153 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-09-26 21:47:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:37,153 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-09-26 21:47:37,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-26 21:47:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-09-26 21:47:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-26 21:47:37,154 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:37,154 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:37,154 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:37,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-09-26 21:47:37,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:37,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:37,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:37,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:37,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:38,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:38,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:38,315 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:47:38,717 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-09-26 21:47:38,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:38,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:39,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:39,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-26 21:47:39,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-26 21:47:39,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-26 21:47:39,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:39,435 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-09-26 21:47:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:40,770 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-09-26 21:47:40,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-26 21:47:40,771 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-09-26 21:47:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:40,771 INFO L225 Difference]: With dead ends: 245 [2018-09-26 21:47:40,771 INFO L226 Difference]: Without dead ends: 231 [2018-09-26 21:47:40,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-26 21:47:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-26 21:47:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-26 21:47:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-09-26 21:47:40,777 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-09-26 21:47:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:40,778 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-09-26 21:47:40,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-26 21:47:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-09-26 21:47:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-26 21:47:40,778 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:40,778 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:40,779 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:40,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:40,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-09-26 21:47:40,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:40,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:40,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:40,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:40,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:41,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:41,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:41,917 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:47:42,069 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:47:42,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:42,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:42,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:42,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-26 21:47:42,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-26 21:47:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-26 21:47:42,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:42,801 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-09-26 21:47:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:44,362 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-09-26 21:47:44,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-26 21:47:44,363 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-09-26 21:47:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:44,363 INFO L225 Difference]: With dead ends: 247 [2018-09-26 21:47:44,363 INFO L226 Difference]: Without dead ends: 233 [2018-09-26 21:47:44,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-26 21:47:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-09-26 21:47:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-09-26 21:47:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-09-26 21:47:44,370 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-09-26 21:47:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:44,370 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-09-26 21:47:44,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-26 21:47:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-09-26 21:47:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-26 21:47:44,370 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:44,371 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:44,371 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:44,371 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-09-26 21:47:44,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:44,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:44,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:44,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:44,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:45,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:45,511 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:45,518 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:47:45,910 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-09-26 21:47:45,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:45,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:46,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:46,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-26 21:47:46,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-26 21:47:46,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-26 21:47:46,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:46,617 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-09-26 21:47:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:48,391 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-09-26 21:47:48,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-26 21:47:48,392 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-09-26 21:47:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:48,392 INFO L225 Difference]: With dead ends: 249 [2018-09-26 21:47:48,392 INFO L226 Difference]: Without dead ends: 235 [2018-09-26 21:47:48,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:48,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-26 21:47:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-26 21:47:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-26 21:47:48,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-09-26 21:47:48,399 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-09-26 21:47:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:48,399 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-09-26 21:47:48,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-26 21:47:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-09-26 21:47:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-26 21:47:48,400 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:48,400 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:48,400 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:48,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:48,400 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-09-26 21:47:48,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:48,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:48,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:48,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:48,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:49,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:49,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:49,554 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:47:49,968 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-09-26 21:47:49,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:49,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:50,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:50,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-26 21:47:50,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-26 21:47:50,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-26 21:47:50,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:50,851 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-09-26 21:47:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:52,450 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-09-26 21:47:52,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-26 21:47:52,451 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-09-26 21:47:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:52,451 INFO L225 Difference]: With dead ends: 251 [2018-09-26 21:47:52,451 INFO L226 Difference]: Without dead ends: 237 [2018-09-26 21:47:52,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-09-26 21:47:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-09-26 21:47:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-09-26 21:47:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-09-26 21:47:52,458 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-09-26 21:47:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:52,458 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-09-26 21:47:52,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-26 21:47:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-09-26 21:47:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-26 21:47:52,459 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:52,459 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:52,459 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:52,459 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-09-26 21:47:52,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:52,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:52,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:52,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:52,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:53,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:53,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:53,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:47:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:53,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:54,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:54,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-26 21:47:54,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-26 21:47:54,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-26 21:47:54,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:54,538 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-09-26 21:47:55,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:55,928 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-09-26 21:47:55,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-26 21:47:55,929 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-09-26 21:47:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:55,929 INFO L225 Difference]: With dead ends: 253 [2018-09-26 21:47:55,929 INFO L226 Difference]: Without dead ends: 239 [2018-09-26 21:47:55,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-26 21:47:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-26 21:47:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-26 21:47:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-09-26 21:47:55,938 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-09-26 21:47:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:55,939 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-09-26 21:47:55,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-26 21:47:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-09-26 21:47:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-26 21:47:55,940 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:55,940 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:55,940 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:55,940 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:55,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-09-26 21:47:55,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:55,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:55,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:55,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:47:55,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:47:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:57,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:47:57,164 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:47:57,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:47:57,323 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:47:57,323 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:47:57,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:47:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:47:58,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:47:58,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-26 21:47:58,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-26 21:47:58,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-26 21:47:58,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:47:58,079 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-09-26 21:47:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:47:59,909 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-09-26 21:47:59,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-26 21:47:59,909 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-09-26 21:47:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:47:59,910 INFO L225 Difference]: With dead ends: 255 [2018-09-26 21:47:59,910 INFO L226 Difference]: Without dead ends: 241 [2018-09-26 21:47:59,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:47:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-09-26 21:47:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-09-26 21:47:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-09-26 21:47:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-09-26 21:47:59,916 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-09-26 21:47:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:47:59,916 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-09-26 21:47:59,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-26 21:47:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-09-26 21:47:59,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-26 21:47:59,917 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:47:59,917 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:47:59,917 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:47:59,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:47:59,917 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-09-26 21:47:59,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:47:59,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:47:59,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:47:59,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:47:59,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:01,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:01,209 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:01,216 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:48:01,658 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-09-26 21:48:01,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:01,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:02,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:02,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-26 21:48:02,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-26 21:48:02,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-26 21:48:02,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:02,416 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 115 states. [2018-09-26 21:48:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:04,207 INFO L93 Difference]: Finished difference Result 257 states and 261 transitions. [2018-09-26 21:48:04,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-26 21:48:04,207 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 240 [2018-09-26 21:48:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:04,208 INFO L225 Difference]: With dead ends: 257 [2018-09-26 21:48:04,208 INFO L226 Difference]: Without dead ends: 243 [2018-09-26 21:48:04,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-26 21:48:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-26 21:48:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-26 21:48:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2018-09-26 21:48:04,215 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 240 [2018-09-26 21:48:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:04,215 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2018-09-26 21:48:04,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-26 21:48:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2018-09-26 21:48:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-26 21:48:04,216 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:04,216 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:04,216 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:04,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash 6922768, now seen corresponding path program 112 times [2018-09-26 21:48:04,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:04,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:04,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:04,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:48:04,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:05,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:05,457 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:05,465 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:48:05,624 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:48:05,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:05,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:06,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:06,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-26 21:48:06,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-26 21:48:06,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-26 21:48:06,598 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:06,598 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 116 states. [2018-09-26 21:48:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:08,351 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2018-09-26 21:48:08,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-26 21:48:08,352 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 242 [2018-09-26 21:48:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:08,352 INFO L225 Difference]: With dead ends: 259 [2018-09-26 21:48:08,352 INFO L226 Difference]: Without dead ends: 245 [2018-09-26 21:48:08,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-09-26 21:48:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-09-26 21:48:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-09-26 21:48:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-09-26 21:48:08,358 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-09-26 21:48:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:08,358 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-09-26 21:48:08,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-26 21:48:08,358 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-09-26 21:48:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-26 21:48:08,359 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:08,359 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:08,359 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:08,359 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:08,359 INFO L82 PathProgramCache]: Analyzing trace with hash -330320372, now seen corresponding path program 113 times [2018-09-26 21:48:08,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:08,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:08,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:08,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:48:08,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:09,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:09,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:09,597 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:48:10,017 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-09-26 21:48:10,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:10,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:10,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:10,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-26 21:48:10,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-26 21:48:10,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-26 21:48:10,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:10,784 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 117 states. [2018-09-26 21:48:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:12,793 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-09-26 21:48:12,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-26 21:48:12,793 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 244 [2018-09-26 21:48:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:12,794 INFO L225 Difference]: With dead ends: 261 [2018-09-26 21:48:12,794 INFO L226 Difference]: Without dead ends: 247 [2018-09-26 21:48:12,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-26 21:48:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-26 21:48:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-26 21:48:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 249 transitions. [2018-09-26 21:48:12,801 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 249 transitions. Word has length 244 [2018-09-26 21:48:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:12,801 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 249 transitions. [2018-09-26 21:48:12,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-26 21:48:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 249 transitions. [2018-09-26 21:48:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-26 21:48:12,802 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:12,802 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:12,802 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:12,802 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1996536584, now seen corresponding path program 114 times [2018-09-26 21:48:12,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:12,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:12,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:12,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:48:12,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:14,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:14,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:14,070 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:48:14,491 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 116 check-sat command(s) [2018-09-26 21:48:14,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:14,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:15,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:15,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-26 21:48:15,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-26 21:48:15,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-26 21:48:15,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:15,278 INFO L87 Difference]: Start difference. First operand 247 states and 249 transitions. Second operand 118 states. [2018-09-26 21:48:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:17,097 INFO L93 Difference]: Finished difference Result 263 states and 267 transitions. [2018-09-26 21:48:17,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-26 21:48:17,098 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 246 [2018-09-26 21:48:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:17,098 INFO L225 Difference]: With dead ends: 263 [2018-09-26 21:48:17,099 INFO L226 Difference]: Without dead ends: 249 [2018-09-26 21:48:17,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-09-26 21:48:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-09-26 21:48:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-26 21:48:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2018-09-26 21:48:17,105 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 246 [2018-09-26 21:48:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:17,106 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2018-09-26 21:48:17,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-26 21:48:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2018-09-26 21:48:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-26 21:48:17,106 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:17,107 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:17,107 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:17,107 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash 428110084, now seen corresponding path program 115 times [2018-09-26 21:48:17,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:17,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:17,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:17,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:48:17,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:18,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:18,455 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:18,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:48:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:18,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:19,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:19,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-26 21:48:19,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-26 21:48:19,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-26 21:48:19,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:19,452 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 119 states. [2018-09-26 21:48:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:21,372 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-09-26 21:48:21,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-26 21:48:21,373 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 248 [2018-09-26 21:48:21,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:21,373 INFO L225 Difference]: With dead ends: 265 [2018-09-26 21:48:21,373 INFO L226 Difference]: Without dead ends: 251 [2018-09-26 21:48:21,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-26 21:48:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-26 21:48:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-26 21:48:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-09-26 21:48:21,380 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 248 [2018-09-26 21:48:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:21,380 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-09-26 21:48:21,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-26 21:48:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-09-26 21:48:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-26 21:48:21,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:21,381 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:21,381 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:21,381 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:21,381 INFO L82 PathProgramCache]: Analyzing trace with hash 703764480, now seen corresponding path program 116 times [2018-09-26 21:48:21,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:21,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:21,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:48:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:22,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:22,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:22,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:48:22,877 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:48:22,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:22,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:23,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:23,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-26 21:48:23,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-26 21:48:23,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-26 21:48:23,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:23,941 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 120 states. [2018-09-26 21:48:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:25,490 INFO L93 Difference]: Finished difference Result 267 states and 271 transitions. [2018-09-26 21:48:25,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-26 21:48:25,491 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 250 [2018-09-26 21:48:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:25,491 INFO L225 Difference]: With dead ends: 267 [2018-09-26 21:48:25,491 INFO L226 Difference]: Without dead ends: 253 [2018-09-26 21:48:25,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-26 21:48:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-09-26 21:48:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-09-26 21:48:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2018-09-26 21:48:25,498 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 250 [2018-09-26 21:48:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:25,498 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2018-09-26 21:48:25,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-26 21:48:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2018-09-26 21:48:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-26 21:48:25,499 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:25,499 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:25,499 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:25,499 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash -680333316, now seen corresponding path program 117 times [2018-09-26 21:48:25,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:25,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:25,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:25,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:48:25,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:26,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:26,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:26,881 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:48:27,355 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 119 check-sat command(s) [2018-09-26 21:48:27,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:27,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:28,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:28,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-26 21:48:28,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-26 21:48:28,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-26 21:48:28,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:28,139 INFO L87 Difference]: Start difference. First operand 253 states and 255 transitions. Second operand 121 states. [2018-09-26 21:48:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:48:29,827 INFO L93 Difference]: Finished difference Result 269 states and 273 transitions. [2018-09-26 21:48:29,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-26 21:48:29,828 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 252 [2018-09-26 21:48:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:48:29,828 INFO L225 Difference]: With dead ends: 269 [2018-09-26 21:48:29,828 INFO L226 Difference]: Without dead ends: 255 [2018-09-26 21:48:29,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:48:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-26 21:48:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-26 21:48:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-26 21:48:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2018-09-26 21:48:29,835 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 252 [2018-09-26 21:48:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:48:29,835 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 257 transitions. [2018-09-26 21:48:29,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-26 21:48:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 257 transitions. [2018-09-26 21:48:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-26 21:48:29,836 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:48:29,836 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-26 21:48:29,836 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:48:29,836 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:48:29,837 INFO L82 PathProgramCache]: Analyzing trace with hash 641546488, now seen corresponding path program 118 times [2018-09-26 21:48:29,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:48:29,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:48:29,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:29,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:48:29,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:48:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:48:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:31,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:48:31,210 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:48:31,222 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:48:31,384 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:48:31,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:48:31,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:48:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-26 21:48:32,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:48:32,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-26 21:48:32,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-26 21:48:32,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-26 21:48:32,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:48:32,267 INFO L87 Difference]: Start difference. First operand 255 states and 257 transitions. Second operand 122 states. Received shutdown request... [2018-09-26 21:48:34,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-26 21:48:34,150 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 21:48:34,156 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 21:48:34,156 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:48:34 BoogieIcfgContainer [2018-09-26 21:48:34,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:48:34,157 INFO L168 Benchmark]: Toolchain (without parser) took 244090.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: -533.1 MB). Peak memory consumption was 301.1 MB. Max. memory is 7.1 GB. [2018-09-26 21:48:34,159 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:48:34,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:48:34,159 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:48:34,160 INFO L168 Benchmark]: RCFGBuilder took 408.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 21:48:34,160 INFO L168 Benchmark]: TraceAbstraction took 243607.17 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -554.2 MB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. [2018-09-26 21:48:34,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 408.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243607.17 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -554.2 MB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was constructing difference of abstraction (255states) and FLOYD_HOARE automaton (currently 122 states, 122 states before enhancement), while ReachableStatesComputation was computing reachable states (245 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 243.5s OverallTime, 122 OverallIterations, 120 TraceHistogramMax, 92.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1092 SDtfs, 31 SDslu, 26350 SDs, 0 SdLazy, 15087 SolverSat, 248 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23445 GetRequests, 16179 SyntacticMatches, 0 SemanticMatches, 7266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=121, 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: 0.7s AutomataMinimizationTime, 121 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.9s SsaConstructionTime, 19.1s SatisfiabilityAnalysisTime, 120.6s InterpolantComputationTime, 32379 NumberOfCodeBlocks, 32379 NumberOfCodeBlocksAsserted, 3800 NumberOfCheckSat, 32138 ConstructedInterpolants, 0 QuantifiedInterpolants, 15547196 SizeOfPredicates, 119 NumberOfNonLiveVariables, 79096 ConjunctsInSsa, 7378 ConjunctsInUnsatCore, 241 InterpolantComputations, 3 PerfectInterpolantSequences, 4260/1156180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_21-48-34-173.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_21-48-34-173.csv Completed graceful shutdown